Download GATE (Graduate Aptitude Test in Engineering) GATE CE?Civil Question Paper With Solution Part 2
2
GATE CE 2019 Set 2: Questions & Solutions
General Aptitude
1.Daytime temperature in Delhi can ______ 40?C
A. Peak
B. reach
C. get
D. stand
Answer : B
Solution :
Daytime temperature in Delhi can reach 40?C
2.The growth rate of ABC Motors in 2017 was the same ________ XYZ Motors in 2016 .
A. As those of
B. As that off
C. As that of
D. As off
Answer : C
Solution :
The growth rate of ABC Motors in 2017 was the same as that of XYZ Motors in 2016.
3.Suresh wanted to lay a new carpet in his new mansion with an area of 70 55 sq. mts.
However an area of 550 sq. mts had to be left out for flower pots. If the cost of carpet is Rs.
50 per sq. mts, how much money (in Rs.) will be spent by Suresh for the carpet now?
A. Rs. 1,65,000
B. Rs. 1,92,500
C. Rs. 1,27,500
D. Rs. 2,75,000
Answer : A
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GATE CE 2019 Set 2: Questions & Solutions
General Aptitude
1.Daytime temperature in Delhi can ______ 40?C
A. Peak
B. reach
C. get
D. stand
Answer : B
Solution :
Daytime temperature in Delhi can reach 40?C
2.The growth rate of ABC Motors in 2017 was the same ________ XYZ Motors in 2016 .
A. As those of
B. As that off
C. As that of
D. As off
Answer : C
Solution :
The growth rate of ABC Motors in 2017 was the same as that of XYZ Motors in 2016.
3.Suresh wanted to lay a new carpet in his new mansion with an area of 70 55 sq. mts.
However an area of 550 sq. mts had to be left out for flower pots. If the cost of carpet is Rs.
50 per sq. mts, how much money (in Rs.) will be spent by Suresh for the carpet now?
A. Rs. 1,65,000
B. Rs. 1,92,500
C. Rs. 1,27,500
D. Rs. 2,75,000
Answer : A
3
Solution :
Area of mansion = 70 ? 55 = 3850 m
2
Area for flower pots = 550 m
2
? Area left for carpet = 3850 ? 550 = 3300m
2
? Cost = 3300 ? 50 = 165000
4.A retaining wall with measurements 30 m ? 12 m ? 6 m was constructed with bricks of
dimensions 8 cm ? 6 cm. If 60% of the wall consists of bricks used for the construction is
___________ lakhs.
A. 45
B. 30
C. 40
D. 75
Answer : A
Solution :
Volume of wall = 30 ? 12 ? 6 = 2160 m
3
= 2160 ? 106 cm
3
Total volume of bricks required = 2160 ? 106 ? 0.6 cm
3
= 1296 ? 106 cm
3
Volume of one brick = 8 ? 6 ? 6 = 288 cm
3
? No. of bricks required
= 4.5 ? 10
6
= 45 lakhs
5.Hima Das was _______ only Indian athlete to win _____________ gold for India.
A. the, many
B. an, the
C. an, a
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GATE CE 2019 Set 2: Questions & Solutions
General Aptitude
1.Daytime temperature in Delhi can ______ 40?C
A. Peak
B. reach
C. get
D. stand
Answer : B
Solution :
Daytime temperature in Delhi can reach 40?C
2.The growth rate of ABC Motors in 2017 was the same ________ XYZ Motors in 2016 .
A. As those of
B. As that off
C. As that of
D. As off
Answer : C
Solution :
The growth rate of ABC Motors in 2017 was the same as that of XYZ Motors in 2016.
3.Suresh wanted to lay a new carpet in his new mansion with an area of 70 55 sq. mts.
However an area of 550 sq. mts had to be left out for flower pots. If the cost of carpet is Rs.
50 per sq. mts, how much money (in Rs.) will be spent by Suresh for the carpet now?
A. Rs. 1,65,000
B. Rs. 1,92,500
C. Rs. 1,27,500
D. Rs. 2,75,000
Answer : A
3
Solution :
Area of mansion = 70 ? 55 = 3850 m
2
Area for flower pots = 550 m
2
? Area left for carpet = 3850 ? 550 = 3300m
2
? Cost = 3300 ? 50 = 165000
4.A retaining wall with measurements 30 m ? 12 m ? 6 m was constructed with bricks of
dimensions 8 cm ? 6 cm. If 60% of the wall consists of bricks used for the construction is
___________ lakhs.
A. 45
B. 30
C. 40
D. 75
Answer : A
Solution :
Volume of wall = 30 ? 12 ? 6 = 2160 m
3
= 2160 ? 106 cm
3
Total volume of bricks required = 2160 ? 106 ? 0.6 cm
3
= 1296 ? 106 cm
3
Volume of one brick = 8 ? 6 ? 6 = 288 cm
3
? No. of bricks required
= 4.5 ? 10
6
= 45 lakhs
5.Hima Das was _______ only Indian athlete to win _____________ gold for India.
A. the, many
B. an, the
C. an, a
4
D. the, a
Answer : D
Solution :
Hima Das was the only Indian athlete to win a gold for India.
6.Population of state X increased by x% and the population of state Y increased by y% from
2001 to 2011. Assume that x is greater than y. Let P be the ratio of the population of state X
to state Y in a given year. The percentage increase in P from 2001 to 2011 is_____________
A. x ? y
B.
C.
D.
Answer : C
Solution :
Let population of X is ?A? in 2001
and Population of Y is ?B? in 2001
? Population of A in 2011
& Population of B in 2011
Given,
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GATE CE 2019 Set 2: Questions & Solutions
General Aptitude
1.Daytime temperature in Delhi can ______ 40?C
A. Peak
B. reach
C. get
D. stand
Answer : B
Solution :
Daytime temperature in Delhi can reach 40?C
2.The growth rate of ABC Motors in 2017 was the same ________ XYZ Motors in 2016 .
A. As those of
B. As that off
C. As that of
D. As off
Answer : C
Solution :
The growth rate of ABC Motors in 2017 was the same as that of XYZ Motors in 2016.
3.Suresh wanted to lay a new carpet in his new mansion with an area of 70 55 sq. mts.
However an area of 550 sq. mts had to be left out for flower pots. If the cost of carpet is Rs.
50 per sq. mts, how much money (in Rs.) will be spent by Suresh for the carpet now?
A. Rs. 1,65,000
B. Rs. 1,92,500
C. Rs. 1,27,500
D. Rs. 2,75,000
Answer : A
3
Solution :
Area of mansion = 70 ? 55 = 3850 m
2
Area for flower pots = 550 m
2
? Area left for carpet = 3850 ? 550 = 3300m
2
? Cost = 3300 ? 50 = 165000
4.A retaining wall with measurements 30 m ? 12 m ? 6 m was constructed with bricks of
dimensions 8 cm ? 6 cm. If 60% of the wall consists of bricks used for the construction is
___________ lakhs.
A. 45
B. 30
C. 40
D. 75
Answer : A
Solution :
Volume of wall = 30 ? 12 ? 6 = 2160 m
3
= 2160 ? 106 cm
3
Total volume of bricks required = 2160 ? 106 ? 0.6 cm
3
= 1296 ? 106 cm
3
Volume of one brick = 8 ? 6 ? 6 = 288 cm
3
? No. of bricks required
= 4.5 ? 10
6
= 45 lakhs
5.Hima Das was _______ only Indian athlete to win _____________ gold for India.
A. the, many
B. an, the
C. an, a
4
D. the, a
Answer : D
Solution :
Hima Das was the only Indian athlete to win a gold for India.
6.Population of state X increased by x% and the population of state Y increased by y% from
2001 to 2011. Assume that x is greater than y. Let P be the ratio of the population of state X
to state Y in a given year. The percentage increase in P from 2001 to 2011 is_____________
A. x ? y
B.
C.
D.
Answer : C
Solution :
Let population of X is ?A? in 2001
and Population of Y is ?B? in 2001
? Population of A in 2011
& Population of B in 2011
Given,
5
% increase in P
7.The Newspaper report that over 500 hectares of tribal land spread across 28 tribal
settlements in Mohinitampuram forest division have already been ?alienated?. A top forest
official said, ?First the tribals are duped out of their land holdings. Second, the families thus
rendered landless are often forced to encroach further into the forests?.
On the basis of the information available in the paragraph, _______ is/are responsible for
duping the tribals.
A. The newspaper
B. Landless families
C. forest officials
D. it cannot be inferred who
Answer : D
Solution :
?it cannot be inferred who?
From given information, nobody can be held responsible.
8.An oil tank can be filled by pipe X in 5 hours and pipe Y in 4 hours, each pump working on
its own. When the oil tank is full and the drainage hole is open, the oil is drained in 20 hours.
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2
GATE CE 2019 Set 2: Questions & Solutions
General Aptitude
1.Daytime temperature in Delhi can ______ 40?C
A. Peak
B. reach
C. get
D. stand
Answer : B
Solution :
Daytime temperature in Delhi can reach 40?C
2.The growth rate of ABC Motors in 2017 was the same ________ XYZ Motors in 2016 .
A. As those of
B. As that off
C. As that of
D. As off
Answer : C
Solution :
The growth rate of ABC Motors in 2017 was the same as that of XYZ Motors in 2016.
3.Suresh wanted to lay a new carpet in his new mansion with an area of 70 55 sq. mts.
However an area of 550 sq. mts had to be left out for flower pots. If the cost of carpet is Rs.
50 per sq. mts, how much money (in Rs.) will be spent by Suresh for the carpet now?
A. Rs. 1,65,000
B. Rs. 1,92,500
C. Rs. 1,27,500
D. Rs. 2,75,000
Answer : A
3
Solution :
Area of mansion = 70 ? 55 = 3850 m
2
Area for flower pots = 550 m
2
? Area left for carpet = 3850 ? 550 = 3300m
2
? Cost = 3300 ? 50 = 165000
4.A retaining wall with measurements 30 m ? 12 m ? 6 m was constructed with bricks of
dimensions 8 cm ? 6 cm. If 60% of the wall consists of bricks used for the construction is
___________ lakhs.
A. 45
B. 30
C. 40
D. 75
Answer : A
Solution :
Volume of wall = 30 ? 12 ? 6 = 2160 m
3
= 2160 ? 106 cm
3
Total volume of bricks required = 2160 ? 106 ? 0.6 cm
3
= 1296 ? 106 cm
3
Volume of one brick = 8 ? 6 ? 6 = 288 cm
3
? No. of bricks required
= 4.5 ? 10
6
= 45 lakhs
5.Hima Das was _______ only Indian athlete to win _____________ gold for India.
A. the, many
B. an, the
C. an, a
4
D. the, a
Answer : D
Solution :
Hima Das was the only Indian athlete to win a gold for India.
6.Population of state X increased by x% and the population of state Y increased by y% from
2001 to 2011. Assume that x is greater than y. Let P be the ratio of the population of state X
to state Y in a given year. The percentage increase in P from 2001 to 2011 is_____________
A. x ? y
B.
C.
D.
Answer : C
Solution :
Let population of X is ?A? in 2001
and Population of Y is ?B? in 2001
? Population of A in 2011
& Population of B in 2011
Given,
5
% increase in P
7.The Newspaper report that over 500 hectares of tribal land spread across 28 tribal
settlements in Mohinitampuram forest division have already been ?alienated?. A top forest
official said, ?First the tribals are duped out of their land holdings. Second, the families thus
rendered landless are often forced to encroach further into the forests?.
On the basis of the information available in the paragraph, _______ is/are responsible for
duping the tribals.
A. The newspaper
B. Landless families
C. forest officials
D. it cannot be inferred who
Answer : D
Solution :
?it cannot be inferred who?
From given information, nobody can be held responsible.
8.An oil tank can be filled by pipe X in 5 hours and pipe Y in 4 hours, each pump working on
its own. When the oil tank is full and the drainage hole is open, the oil is drained in 20 hours.
6
If initially the tank was empty and someone started the two pumps together but left the
drainage hole open, how many hours will it tak for the tank to be filled? (Assume that the rate
of drainage is independent of the head)
A. 2.50
B. 1.50
C. 2.00
D. 4.00
Answer : A
Solution :
Pipe X will fill how much in one hour tank
Pipe Y will fill how much in one hour tank
Drainage will drain out how much water in 1 hour tank
? Total tank filled in one hour
tank gets filled in = 1 hour
? Full (i) tank gets filled in
9.Mohan, the manager, wants his four workers to work in pairs. No paper should work for
more than 5 hours. Ram and Johan have worked together for 5 hours. Krishna and Amir have
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2
GATE CE 2019 Set 2: Questions & Solutions
General Aptitude
1.Daytime temperature in Delhi can ______ 40?C
A. Peak
B. reach
C. get
D. stand
Answer : B
Solution :
Daytime temperature in Delhi can reach 40?C
2.The growth rate of ABC Motors in 2017 was the same ________ XYZ Motors in 2016 .
A. As those of
B. As that off
C. As that of
D. As off
Answer : C
Solution :
The growth rate of ABC Motors in 2017 was the same as that of XYZ Motors in 2016.
3.Suresh wanted to lay a new carpet in his new mansion with an area of 70 55 sq. mts.
However an area of 550 sq. mts had to be left out for flower pots. If the cost of carpet is Rs.
50 per sq. mts, how much money (in Rs.) will be spent by Suresh for the carpet now?
A. Rs. 1,65,000
B. Rs. 1,92,500
C. Rs. 1,27,500
D. Rs. 2,75,000
Answer : A
3
Solution :
Area of mansion = 70 ? 55 = 3850 m
2
Area for flower pots = 550 m
2
? Area left for carpet = 3850 ? 550 = 3300m
2
? Cost = 3300 ? 50 = 165000
4.A retaining wall with measurements 30 m ? 12 m ? 6 m was constructed with bricks of
dimensions 8 cm ? 6 cm. If 60% of the wall consists of bricks used for the construction is
___________ lakhs.
A. 45
B. 30
C. 40
D. 75
Answer : A
Solution :
Volume of wall = 30 ? 12 ? 6 = 2160 m
3
= 2160 ? 106 cm
3
Total volume of bricks required = 2160 ? 106 ? 0.6 cm
3
= 1296 ? 106 cm
3
Volume of one brick = 8 ? 6 ? 6 = 288 cm
3
? No. of bricks required
= 4.5 ? 10
6
= 45 lakhs
5.Hima Das was _______ only Indian athlete to win _____________ gold for India.
A. the, many
B. an, the
C. an, a
4
D. the, a
Answer : D
Solution :
Hima Das was the only Indian athlete to win a gold for India.
6.Population of state X increased by x% and the population of state Y increased by y% from
2001 to 2011. Assume that x is greater than y. Let P be the ratio of the population of state X
to state Y in a given year. The percentage increase in P from 2001 to 2011 is_____________
A. x ? y
B.
C.
D.
Answer : C
Solution :
Let population of X is ?A? in 2001
and Population of Y is ?B? in 2001
? Population of A in 2011
& Population of B in 2011
Given,
5
% increase in P
7.The Newspaper report that over 500 hectares of tribal land spread across 28 tribal
settlements in Mohinitampuram forest division have already been ?alienated?. A top forest
official said, ?First the tribals are duped out of their land holdings. Second, the families thus
rendered landless are often forced to encroach further into the forests?.
On the basis of the information available in the paragraph, _______ is/are responsible for
duping the tribals.
A. The newspaper
B. Landless families
C. forest officials
D. it cannot be inferred who
Answer : D
Solution :
?it cannot be inferred who?
From given information, nobody can be held responsible.
8.An oil tank can be filled by pipe X in 5 hours and pipe Y in 4 hours, each pump working on
its own. When the oil tank is full and the drainage hole is open, the oil is drained in 20 hours.
6
If initially the tank was empty and someone started the two pumps together but left the
drainage hole open, how many hours will it tak for the tank to be filled? (Assume that the rate
of drainage is independent of the head)
A. 2.50
B. 1.50
C. 2.00
D. 4.00
Answer : A
Solution :
Pipe X will fill how much in one hour tank
Pipe Y will fill how much in one hour tank
Drainage will drain out how much water in 1 hour tank
? Total tank filled in one hour
tank gets filled in = 1 hour
? Full (i) tank gets filled in
9.Mohan, the manager, wants his four workers to work in pairs. No paper should work for
more than 5 hours. Ram and Johan have worked together for 5 hours. Krishna and Amir have
7
worked as a team for 2 hours. Krishan does not want to work with Ram whom should mohan
allot to work with Johan, if we wants all the workers to continue working?
A. Amir
B. Krishna
C. Ram
D. None of the three
Answer : B
Solution :
Conditions given:
(i) Ram & John have worked for 5 hours.
(ii) Krishna doesn?t want to work with Ram.
(iii) No pair should work beyond 5 hours.
Hence, Krishna should work with John to satisfy the above conditions.
10.?Popular Hindi fiction, despite ? or perhaps because of ? its wide reach, often does not
appear in our cinema. As ideals that viewers are meant to look up to rather than identify with,
Hindi film protagonisits usually read books of apsirational value: textbooks, English books,
or high value literature?.
Which one of the following CANNOT be inferred from the paragraph above?
A. Textbooks, English books or high literature have apsirational value, but not popular Hindi
fiction
B. People do not look up to writers of textbooks, English book or high value literature
C. Though popular hindi fiction was wide readh, it often does not appear in the movies
D. Protagonists in Hindi movies, being ideals for viewers, read only books of aspirational
value.
Answer : B
Solution :
People do not look up to writers of textbooks, English book or high value literature.
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2
GATE CE 2019 Set 2: Questions & Solutions
General Aptitude
1.Daytime temperature in Delhi can ______ 40?C
A. Peak
B. reach
C. get
D. stand
Answer : B
Solution :
Daytime temperature in Delhi can reach 40?C
2.The growth rate of ABC Motors in 2017 was the same ________ XYZ Motors in 2016 .
A. As those of
B. As that off
C. As that of
D. As off
Answer : C
Solution :
The growth rate of ABC Motors in 2017 was the same as that of XYZ Motors in 2016.
3.Suresh wanted to lay a new carpet in his new mansion with an area of 70 55 sq. mts.
However an area of 550 sq. mts had to be left out for flower pots. If the cost of carpet is Rs.
50 per sq. mts, how much money (in Rs.) will be spent by Suresh for the carpet now?
A. Rs. 1,65,000
B. Rs. 1,92,500
C. Rs. 1,27,500
D. Rs. 2,75,000
Answer : A
3
Solution :
Area of mansion = 70 ? 55 = 3850 m
2
Area for flower pots = 550 m
2
? Area left for carpet = 3850 ? 550 = 3300m
2
? Cost = 3300 ? 50 = 165000
4.A retaining wall with measurements 30 m ? 12 m ? 6 m was constructed with bricks of
dimensions 8 cm ? 6 cm. If 60% of the wall consists of bricks used for the construction is
___________ lakhs.
A. 45
B. 30
C. 40
D. 75
Answer : A
Solution :
Volume of wall = 30 ? 12 ? 6 = 2160 m
3
= 2160 ? 106 cm
3
Total volume of bricks required = 2160 ? 106 ? 0.6 cm
3
= 1296 ? 106 cm
3
Volume of one brick = 8 ? 6 ? 6 = 288 cm
3
? No. of bricks required
= 4.5 ? 10
6
= 45 lakhs
5.Hima Das was _______ only Indian athlete to win _____________ gold for India.
A. the, many
B. an, the
C. an, a
4
D. the, a
Answer : D
Solution :
Hima Das was the only Indian athlete to win a gold for India.
6.Population of state X increased by x% and the population of state Y increased by y% from
2001 to 2011. Assume that x is greater than y. Let P be the ratio of the population of state X
to state Y in a given year. The percentage increase in P from 2001 to 2011 is_____________
A. x ? y
B.
C.
D.
Answer : C
Solution :
Let population of X is ?A? in 2001
and Population of Y is ?B? in 2001
? Population of A in 2011
& Population of B in 2011
Given,
5
% increase in P
7.The Newspaper report that over 500 hectares of tribal land spread across 28 tribal
settlements in Mohinitampuram forest division have already been ?alienated?. A top forest
official said, ?First the tribals are duped out of their land holdings. Second, the families thus
rendered landless are often forced to encroach further into the forests?.
On the basis of the information available in the paragraph, _______ is/are responsible for
duping the tribals.
A. The newspaper
B. Landless families
C. forest officials
D. it cannot be inferred who
Answer : D
Solution :
?it cannot be inferred who?
From given information, nobody can be held responsible.
8.An oil tank can be filled by pipe X in 5 hours and pipe Y in 4 hours, each pump working on
its own. When the oil tank is full and the drainage hole is open, the oil is drained in 20 hours.
6
If initially the tank was empty and someone started the two pumps together but left the
drainage hole open, how many hours will it tak for the tank to be filled? (Assume that the rate
of drainage is independent of the head)
A. 2.50
B. 1.50
C. 2.00
D. 4.00
Answer : A
Solution :
Pipe X will fill how much in one hour tank
Pipe Y will fill how much in one hour tank
Drainage will drain out how much water in 1 hour tank
? Total tank filled in one hour
tank gets filled in = 1 hour
? Full (i) tank gets filled in
9.Mohan, the manager, wants his four workers to work in pairs. No paper should work for
more than 5 hours. Ram and Johan have worked together for 5 hours. Krishna and Amir have
7
worked as a team for 2 hours. Krishan does not want to work with Ram whom should mohan
allot to work with Johan, if we wants all the workers to continue working?
A. Amir
B. Krishna
C. Ram
D. None of the three
Answer : B
Solution :
Conditions given:
(i) Ram & John have worked for 5 hours.
(ii) Krishna doesn?t want to work with Ram.
(iii) No pair should work beyond 5 hours.
Hence, Krishna should work with John to satisfy the above conditions.
10.?Popular Hindi fiction, despite ? or perhaps because of ? its wide reach, often does not
appear in our cinema. As ideals that viewers are meant to look up to rather than identify with,
Hindi film protagonisits usually read books of apsirational value: textbooks, English books,
or high value literature?.
Which one of the following CANNOT be inferred from the paragraph above?
A. Textbooks, English books or high literature have apsirational value, but not popular Hindi
fiction
B. People do not look up to writers of textbooks, English book or high value literature
C. Though popular hindi fiction was wide readh, it often does not appear in the movies
D. Protagonists in Hindi movies, being ideals for viewers, read only books of aspirational
value.
Answer : B
Solution :
People do not look up to writers of textbooks, English book or high value literature.
8
Civil Engineering
11.What is curl of the vector field 2x
2
yi + 5z
2
j - 4yzk?
A. - 14zi - 2x
2
k
B. 6zi + 4xj - 2x
2
k
C. 6zi + 8xyj + 2x
2
yk
D. -14zi + 6yj + 2x
2
k
Answer : A
Solution :
12.Analysis of a water sample revealed that the sample contains the following species.
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2
GATE CE 2019 Set 2: Questions & Solutions
General Aptitude
1.Daytime temperature in Delhi can ______ 40?C
A. Peak
B. reach
C. get
D. stand
Answer : B
Solution :
Daytime temperature in Delhi can reach 40?C
2.The growth rate of ABC Motors in 2017 was the same ________ XYZ Motors in 2016 .
A. As those of
B. As that off
C. As that of
D. As off
Answer : C
Solution :
The growth rate of ABC Motors in 2017 was the same as that of XYZ Motors in 2016.
3.Suresh wanted to lay a new carpet in his new mansion with an area of 70 55 sq. mts.
However an area of 550 sq. mts had to be left out for flower pots. If the cost of carpet is Rs.
50 per sq. mts, how much money (in Rs.) will be spent by Suresh for the carpet now?
A. Rs. 1,65,000
B. Rs. 1,92,500
C. Rs. 1,27,500
D. Rs. 2,75,000
Answer : A
3
Solution :
Area of mansion = 70 ? 55 = 3850 m
2
Area for flower pots = 550 m
2
? Area left for carpet = 3850 ? 550 = 3300m
2
? Cost = 3300 ? 50 = 165000
4.A retaining wall with measurements 30 m ? 12 m ? 6 m was constructed with bricks of
dimensions 8 cm ? 6 cm. If 60% of the wall consists of bricks used for the construction is
___________ lakhs.
A. 45
B. 30
C. 40
D. 75
Answer : A
Solution :
Volume of wall = 30 ? 12 ? 6 = 2160 m
3
= 2160 ? 106 cm
3
Total volume of bricks required = 2160 ? 106 ? 0.6 cm
3
= 1296 ? 106 cm
3
Volume of one brick = 8 ? 6 ? 6 = 288 cm
3
? No. of bricks required
= 4.5 ? 10
6
= 45 lakhs
5.Hima Das was _______ only Indian athlete to win _____________ gold for India.
A. the, many
B. an, the
C. an, a
4
D. the, a
Answer : D
Solution :
Hima Das was the only Indian athlete to win a gold for India.
6.Population of state X increased by x% and the population of state Y increased by y% from
2001 to 2011. Assume that x is greater than y. Let P be the ratio of the population of state X
to state Y in a given year. The percentage increase in P from 2001 to 2011 is_____________
A. x ? y
B.
C.
D.
Answer : C
Solution :
Let population of X is ?A? in 2001
and Population of Y is ?B? in 2001
? Population of A in 2011
& Population of B in 2011
Given,
5
% increase in P
7.The Newspaper report that over 500 hectares of tribal land spread across 28 tribal
settlements in Mohinitampuram forest division have already been ?alienated?. A top forest
official said, ?First the tribals are duped out of their land holdings. Second, the families thus
rendered landless are often forced to encroach further into the forests?.
On the basis of the information available in the paragraph, _______ is/are responsible for
duping the tribals.
A. The newspaper
B. Landless families
C. forest officials
D. it cannot be inferred who
Answer : D
Solution :
?it cannot be inferred who?
From given information, nobody can be held responsible.
8.An oil tank can be filled by pipe X in 5 hours and pipe Y in 4 hours, each pump working on
its own. When the oil tank is full and the drainage hole is open, the oil is drained in 20 hours.
6
If initially the tank was empty and someone started the two pumps together but left the
drainage hole open, how many hours will it tak for the tank to be filled? (Assume that the rate
of drainage is independent of the head)
A. 2.50
B. 1.50
C. 2.00
D. 4.00
Answer : A
Solution :
Pipe X will fill how much in one hour tank
Pipe Y will fill how much in one hour tank
Drainage will drain out how much water in 1 hour tank
? Total tank filled in one hour
tank gets filled in = 1 hour
? Full (i) tank gets filled in
9.Mohan, the manager, wants his four workers to work in pairs. No paper should work for
more than 5 hours. Ram and Johan have worked together for 5 hours. Krishna and Amir have
7
worked as a team for 2 hours. Krishan does not want to work with Ram whom should mohan
allot to work with Johan, if we wants all the workers to continue working?
A. Amir
B. Krishna
C. Ram
D. None of the three
Answer : B
Solution :
Conditions given:
(i) Ram & John have worked for 5 hours.
(ii) Krishna doesn?t want to work with Ram.
(iii) No pair should work beyond 5 hours.
Hence, Krishna should work with John to satisfy the above conditions.
10.?Popular Hindi fiction, despite ? or perhaps because of ? its wide reach, often does not
appear in our cinema. As ideals that viewers are meant to look up to rather than identify with,
Hindi film protagonisits usually read books of apsirational value: textbooks, English books,
or high value literature?.
Which one of the following CANNOT be inferred from the paragraph above?
A. Textbooks, English books or high literature have apsirational value, but not popular Hindi
fiction
B. People do not look up to writers of textbooks, English book or high value literature
C. Though popular hindi fiction was wide readh, it often does not appear in the movies
D. Protagonists in Hindi movies, being ideals for viewers, read only books of aspirational
value.
Answer : B
Solution :
People do not look up to writers of textbooks, English book or high value literature.
8
Civil Engineering
11.What is curl of the vector field 2x
2
yi + 5z
2
j - 4yzk?
A. - 14zi - 2x
2
k
B. 6zi + 4xj - 2x
2
k
C. 6zi + 8xyj + 2x
2
yk
D. -14zi + 6yj + 2x
2
k
Answer : A
Solution :
12.Analysis of a water sample revealed that the sample contains the following species.
9
Concentrations of which of the species will be required to compute alkalinity?
A.
B.
C.
D.
Answer : A
Solution :
H2CO3 and HCO3
-
never come together
13.The value of the function f(x) is given at n distinct values of x and its value is to be
interpolated at the point x
*
using all the n points. The estimate is obtained first by the
Lagrange polynomial, denoted by IL, and then by the Newton polynomial, denoted by IN.
Which one of the following statements is correct?
A. IL is always greater than IN
B. No definite relation exists between IL and IN.
C. IL is always less than IN
D. IL and IN are always equal
Answer : B
Solution :
Lagrange?s form is more efficient when you have to interpolate several data sets on the same
data point.
Newton?s form is more efficient when you have to interpolate data incrementally. So no
relationship between both.
14.If the fineness modulus of a sample of the fine aggregates is 4.3, the mean size of the
particles in the sample is between
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2
GATE CE 2019 Set 2: Questions & Solutions
General Aptitude
1.Daytime temperature in Delhi can ______ 40?C
A. Peak
B. reach
C. get
D. stand
Answer : B
Solution :
Daytime temperature in Delhi can reach 40?C
2.The growth rate of ABC Motors in 2017 was the same ________ XYZ Motors in 2016 .
A. As those of
B. As that off
C. As that of
D. As off
Answer : C
Solution :
The growth rate of ABC Motors in 2017 was the same as that of XYZ Motors in 2016.
3.Suresh wanted to lay a new carpet in his new mansion with an area of 70 55 sq. mts.
However an area of 550 sq. mts had to be left out for flower pots. If the cost of carpet is Rs.
50 per sq. mts, how much money (in Rs.) will be spent by Suresh for the carpet now?
A. Rs. 1,65,000
B. Rs. 1,92,500
C. Rs. 1,27,500
D. Rs. 2,75,000
Answer : A
3
Solution :
Area of mansion = 70 ? 55 = 3850 m
2
Area for flower pots = 550 m
2
? Area left for carpet = 3850 ? 550 = 3300m
2
? Cost = 3300 ? 50 = 165000
4.A retaining wall with measurements 30 m ? 12 m ? 6 m was constructed with bricks of
dimensions 8 cm ? 6 cm. If 60% of the wall consists of bricks used for the construction is
___________ lakhs.
A. 45
B. 30
C. 40
D. 75
Answer : A
Solution :
Volume of wall = 30 ? 12 ? 6 = 2160 m
3
= 2160 ? 106 cm
3
Total volume of bricks required = 2160 ? 106 ? 0.6 cm
3
= 1296 ? 106 cm
3
Volume of one brick = 8 ? 6 ? 6 = 288 cm
3
? No. of bricks required
= 4.5 ? 10
6
= 45 lakhs
5.Hima Das was _______ only Indian athlete to win _____________ gold for India.
A. the, many
B. an, the
C. an, a
4
D. the, a
Answer : D
Solution :
Hima Das was the only Indian athlete to win a gold for India.
6.Population of state X increased by x% and the population of state Y increased by y% from
2001 to 2011. Assume that x is greater than y. Let P be the ratio of the population of state X
to state Y in a given year. The percentage increase in P from 2001 to 2011 is_____________
A. x ? y
B.
C.
D.
Answer : C
Solution :
Let population of X is ?A? in 2001
and Population of Y is ?B? in 2001
? Population of A in 2011
& Population of B in 2011
Given,
5
% increase in P
7.The Newspaper report that over 500 hectares of tribal land spread across 28 tribal
settlements in Mohinitampuram forest division have already been ?alienated?. A top forest
official said, ?First the tribals are duped out of their land holdings. Second, the families thus
rendered landless are often forced to encroach further into the forests?.
On the basis of the information available in the paragraph, _______ is/are responsible for
duping the tribals.
A. The newspaper
B. Landless families
C. forest officials
D. it cannot be inferred who
Answer : D
Solution :
?it cannot be inferred who?
From given information, nobody can be held responsible.
8.An oil tank can be filled by pipe X in 5 hours and pipe Y in 4 hours, each pump working on
its own. When the oil tank is full and the drainage hole is open, the oil is drained in 20 hours.
6
If initially the tank was empty and someone started the two pumps together but left the
drainage hole open, how many hours will it tak for the tank to be filled? (Assume that the rate
of drainage is independent of the head)
A. 2.50
B. 1.50
C. 2.00
D. 4.00
Answer : A
Solution :
Pipe X will fill how much in one hour tank
Pipe Y will fill how much in one hour tank
Drainage will drain out how much water in 1 hour tank
? Total tank filled in one hour
tank gets filled in = 1 hour
? Full (i) tank gets filled in
9.Mohan, the manager, wants his four workers to work in pairs. No paper should work for
more than 5 hours. Ram and Johan have worked together for 5 hours. Krishna and Amir have
7
worked as a team for 2 hours. Krishan does not want to work with Ram whom should mohan
allot to work with Johan, if we wants all the workers to continue working?
A. Amir
B. Krishna
C. Ram
D. None of the three
Answer : B
Solution :
Conditions given:
(i) Ram & John have worked for 5 hours.
(ii) Krishna doesn?t want to work with Ram.
(iii) No pair should work beyond 5 hours.
Hence, Krishna should work with John to satisfy the above conditions.
10.?Popular Hindi fiction, despite ? or perhaps because of ? its wide reach, often does not
appear in our cinema. As ideals that viewers are meant to look up to rather than identify with,
Hindi film protagonisits usually read books of apsirational value: textbooks, English books,
or high value literature?.
Which one of the following CANNOT be inferred from the paragraph above?
A. Textbooks, English books or high literature have apsirational value, but not popular Hindi
fiction
B. People do not look up to writers of textbooks, English book or high value literature
C. Though popular hindi fiction was wide readh, it often does not appear in the movies
D. Protagonists in Hindi movies, being ideals for viewers, read only books of aspirational
value.
Answer : B
Solution :
People do not look up to writers of textbooks, English book or high value literature.
8
Civil Engineering
11.What is curl of the vector field 2x
2
yi + 5z
2
j - 4yzk?
A. - 14zi - 2x
2
k
B. 6zi + 4xj - 2x
2
k
C. 6zi + 8xyj + 2x
2
yk
D. -14zi + 6yj + 2x
2
k
Answer : A
Solution :
12.Analysis of a water sample revealed that the sample contains the following species.
9
Concentrations of which of the species will be required to compute alkalinity?
A.
B.
C.
D.
Answer : A
Solution :
H2CO3 and HCO3
-
never come together
13.The value of the function f(x) is given at n distinct values of x and its value is to be
interpolated at the point x
*
using all the n points. The estimate is obtained first by the
Lagrange polynomial, denoted by IL, and then by the Newton polynomial, denoted by IN.
Which one of the following statements is correct?
A. IL is always greater than IN
B. No definite relation exists between IL and IN.
C. IL is always less than IN
D. IL and IN are always equal
Answer : B
Solution :
Lagrange?s form is more efficient when you have to interpolate several data sets on the same
data point.
Newton?s form is more efficient when you have to interpolate data incrementally. So no
relationship between both.
14.If the fineness modulus of a sample of the fine aggregates is 4.3, the mean size of the
particles in the sample is between
10
A. 150 ?m and 300 ?m
B. 2.36 mm and 4.75 mm
C. 300 ?m and 600 ?m
D. 1.18 mm and 2.36 mm
Answer : D
Solution :
150 ?m, 300 ?m, 600 ?m, 1.18 mm,
2.36 mm, 4.75 mm, 10 mm, 20 mm,
40 mm, 80 mm
150 ? 1
300 ? 2
600 ? 3
4.75 - 6
15.The command area of a canal grows only one crop, i.e., wheat. The base period of wheat
is 120 days and its total water requirement, ?, is 40 cm. If the canal discharge is 2 m
3
/s, the
area, in hectares, rounded off to the nearest integer, which could be irrigated (neglecting all
losses) is ______________
Answer :
Solution :
B = 120 days
? = 0.4 m
and ? = 8.64B/D
? D = 2592 ha per (m
3
/s)
? For 2m
3
/sec water, area will be 5184 ha
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2
GATE CE 2019 Set 2: Questions & Solutions
General Aptitude
1.Daytime temperature in Delhi can ______ 40?C
A. Peak
B. reach
C. get
D. stand
Answer : B
Solution :
Daytime temperature in Delhi can reach 40?C
2.The growth rate of ABC Motors in 2017 was the same ________ XYZ Motors in 2016 .
A. As those of
B. As that off
C. As that of
D. As off
Answer : C
Solution :
The growth rate of ABC Motors in 2017 was the same as that of XYZ Motors in 2016.
3.Suresh wanted to lay a new carpet in his new mansion with an area of 70 55 sq. mts.
However an area of 550 sq. mts had to be left out for flower pots. If the cost of carpet is Rs.
50 per sq. mts, how much money (in Rs.) will be spent by Suresh for the carpet now?
A. Rs. 1,65,000
B. Rs. 1,92,500
C. Rs. 1,27,500
D. Rs. 2,75,000
Answer : A
3
Solution :
Area of mansion = 70 ? 55 = 3850 m
2
Area for flower pots = 550 m
2
? Area left for carpet = 3850 ? 550 = 3300m
2
? Cost = 3300 ? 50 = 165000
4.A retaining wall with measurements 30 m ? 12 m ? 6 m was constructed with bricks of
dimensions 8 cm ? 6 cm. If 60% of the wall consists of bricks used for the construction is
___________ lakhs.
A. 45
B. 30
C. 40
D. 75
Answer : A
Solution :
Volume of wall = 30 ? 12 ? 6 = 2160 m
3
= 2160 ? 106 cm
3
Total volume of bricks required = 2160 ? 106 ? 0.6 cm
3
= 1296 ? 106 cm
3
Volume of one brick = 8 ? 6 ? 6 = 288 cm
3
? No. of bricks required
= 4.5 ? 10
6
= 45 lakhs
5.Hima Das was _______ only Indian athlete to win _____________ gold for India.
A. the, many
B. an, the
C. an, a
4
D. the, a
Answer : D
Solution :
Hima Das was the only Indian athlete to win a gold for India.
6.Population of state X increased by x% and the population of state Y increased by y% from
2001 to 2011. Assume that x is greater than y. Let P be the ratio of the population of state X
to state Y in a given year. The percentage increase in P from 2001 to 2011 is_____________
A. x ? y
B.
C.
D.
Answer : C
Solution :
Let population of X is ?A? in 2001
and Population of Y is ?B? in 2001
? Population of A in 2011
& Population of B in 2011
Given,
5
% increase in P
7.The Newspaper report that over 500 hectares of tribal land spread across 28 tribal
settlements in Mohinitampuram forest division have already been ?alienated?. A top forest
official said, ?First the tribals are duped out of their land holdings. Second, the families thus
rendered landless are often forced to encroach further into the forests?.
On the basis of the information available in the paragraph, _______ is/are responsible for
duping the tribals.
A. The newspaper
B. Landless families
C. forest officials
D. it cannot be inferred who
Answer : D
Solution :
?it cannot be inferred who?
From given information, nobody can be held responsible.
8.An oil tank can be filled by pipe X in 5 hours and pipe Y in 4 hours, each pump working on
its own. When the oil tank is full and the drainage hole is open, the oil is drained in 20 hours.
6
If initially the tank was empty and someone started the two pumps together but left the
drainage hole open, how many hours will it tak for the tank to be filled? (Assume that the rate
of drainage is independent of the head)
A. 2.50
B. 1.50
C. 2.00
D. 4.00
Answer : A
Solution :
Pipe X will fill how much in one hour tank
Pipe Y will fill how much in one hour tank
Drainage will drain out how much water in 1 hour tank
? Total tank filled in one hour
tank gets filled in = 1 hour
? Full (i) tank gets filled in
9.Mohan, the manager, wants his four workers to work in pairs. No paper should work for
more than 5 hours. Ram and Johan have worked together for 5 hours. Krishna and Amir have
7
worked as a team for 2 hours. Krishan does not want to work with Ram whom should mohan
allot to work with Johan, if we wants all the workers to continue working?
A. Amir
B. Krishna
C. Ram
D. None of the three
Answer : B
Solution :
Conditions given:
(i) Ram & John have worked for 5 hours.
(ii) Krishna doesn?t want to work with Ram.
(iii) No pair should work beyond 5 hours.
Hence, Krishna should work with John to satisfy the above conditions.
10.?Popular Hindi fiction, despite ? or perhaps because of ? its wide reach, often does not
appear in our cinema. As ideals that viewers are meant to look up to rather than identify with,
Hindi film protagonisits usually read books of apsirational value: textbooks, English books,
or high value literature?.
Which one of the following CANNOT be inferred from the paragraph above?
A. Textbooks, English books or high literature have apsirational value, but not popular Hindi
fiction
B. People do not look up to writers of textbooks, English book or high value literature
C. Though popular hindi fiction was wide readh, it often does not appear in the movies
D. Protagonists in Hindi movies, being ideals for viewers, read only books of aspirational
value.
Answer : B
Solution :
People do not look up to writers of textbooks, English book or high value literature.
8
Civil Engineering
11.What is curl of the vector field 2x
2
yi + 5z
2
j - 4yzk?
A. - 14zi - 2x
2
k
B. 6zi + 4xj - 2x
2
k
C. 6zi + 8xyj + 2x
2
yk
D. -14zi + 6yj + 2x
2
k
Answer : A
Solution :
12.Analysis of a water sample revealed that the sample contains the following species.
9
Concentrations of which of the species will be required to compute alkalinity?
A.
B.
C.
D.
Answer : A
Solution :
H2CO3 and HCO3
-
never come together
13.The value of the function f(x) is given at n distinct values of x and its value is to be
interpolated at the point x
*
using all the n points. The estimate is obtained first by the
Lagrange polynomial, denoted by IL, and then by the Newton polynomial, denoted by IN.
Which one of the following statements is correct?
A. IL is always greater than IN
B. No definite relation exists between IL and IN.
C. IL is always less than IN
D. IL and IN are always equal
Answer : B
Solution :
Lagrange?s form is more efficient when you have to interpolate several data sets on the same
data point.
Newton?s form is more efficient when you have to interpolate data incrementally. So no
relationship between both.
14.If the fineness modulus of a sample of the fine aggregates is 4.3, the mean size of the
particles in the sample is between
10
A. 150 ?m and 300 ?m
B. 2.36 mm and 4.75 mm
C. 300 ?m and 600 ?m
D. 1.18 mm and 2.36 mm
Answer : D
Solution :
150 ?m, 300 ?m, 600 ?m, 1.18 mm,
2.36 mm, 4.75 mm, 10 mm, 20 mm,
40 mm, 80 mm
150 ? 1
300 ? 2
600 ? 3
4.75 - 6
15.The command area of a canal grows only one crop, i.e., wheat. The base period of wheat
is 120 days and its total water requirement, ?, is 40 cm. If the canal discharge is 2 m
3
/s, the
area, in hectares, rounded off to the nearest integer, which could be irrigated (neglecting all
losses) is ______________
Answer :
Solution :
B = 120 days
? = 0.4 m
and ? = 8.64B/D
? D = 2592 ha per (m
3
/s)
? For 2m
3
/sec water, area will be 5184 ha
11
16.The characteristic compressive strength of concrete required in a project is 25 MPa and
standard deviation in the observed compressive strength expected at site is 4 MPa. The
average compressive strength of cubes tested at different water-cement (w/c) ratios using the
same material as is used for the project is given in the table.
The water-cement ratio (in percent, round off to the lower integer) to be used in the mix
is________
Answer :
Solution :
fck = 25 ; ? = 4 MPa
fm = fck + 1.65? = 31.6 MPa
Using interpolation
= 46.7 (Rounded off to the lowest integer).
17.A solid sphere of radius, r, and made of material with density ?s, is moving through the
atmosphere (constant pressure, p) with a velocity, ?. The net force ONLY due to atmospheric
pressure (Fp) acting on the sphere at any time, t, is
A.
B. Zero
C. ?r
2
p
D. 4?r
2
p
Answer : B
Solution :
Force = area ? P
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2
GATE CE 2019 Set 2: Questions & Solutions
General Aptitude
1.Daytime temperature in Delhi can ______ 40?C
A. Peak
B. reach
C. get
D. stand
Answer : B
Solution :
Daytime temperature in Delhi can reach 40?C
2.The growth rate of ABC Motors in 2017 was the same ________ XYZ Motors in 2016 .
A. As those of
B. As that off
C. As that of
D. As off
Answer : C
Solution :
The growth rate of ABC Motors in 2017 was the same as that of XYZ Motors in 2016.
3.Suresh wanted to lay a new carpet in his new mansion with an area of 70 55 sq. mts.
However an area of 550 sq. mts had to be left out for flower pots. If the cost of carpet is Rs.
50 per sq. mts, how much money (in Rs.) will be spent by Suresh for the carpet now?
A. Rs. 1,65,000
B. Rs. 1,92,500
C. Rs. 1,27,500
D. Rs. 2,75,000
Answer : A
3
Solution :
Area of mansion = 70 ? 55 = 3850 m
2
Area for flower pots = 550 m
2
? Area left for carpet = 3850 ? 550 = 3300m
2
? Cost = 3300 ? 50 = 165000
4.A retaining wall with measurements 30 m ? 12 m ? 6 m was constructed with bricks of
dimensions 8 cm ? 6 cm. If 60% of the wall consists of bricks used for the construction is
___________ lakhs.
A. 45
B. 30
C. 40
D. 75
Answer : A
Solution :
Volume of wall = 30 ? 12 ? 6 = 2160 m
3
= 2160 ? 106 cm
3
Total volume of bricks required = 2160 ? 106 ? 0.6 cm
3
= 1296 ? 106 cm
3
Volume of one brick = 8 ? 6 ? 6 = 288 cm
3
? No. of bricks required
= 4.5 ? 10
6
= 45 lakhs
5.Hima Das was _______ only Indian athlete to win _____________ gold for India.
A. the, many
B. an, the
C. an, a
4
D. the, a
Answer : D
Solution :
Hima Das was the only Indian athlete to win a gold for India.
6.Population of state X increased by x% and the population of state Y increased by y% from
2001 to 2011. Assume that x is greater than y. Let P be the ratio of the population of state X
to state Y in a given year. The percentage increase in P from 2001 to 2011 is_____________
A. x ? y
B.
C.
D.
Answer : C
Solution :
Let population of X is ?A? in 2001
and Population of Y is ?B? in 2001
? Population of A in 2011
& Population of B in 2011
Given,
5
% increase in P
7.The Newspaper report that over 500 hectares of tribal land spread across 28 tribal
settlements in Mohinitampuram forest division have already been ?alienated?. A top forest
official said, ?First the tribals are duped out of their land holdings. Second, the families thus
rendered landless are often forced to encroach further into the forests?.
On the basis of the information available in the paragraph, _______ is/are responsible for
duping the tribals.
A. The newspaper
B. Landless families
C. forest officials
D. it cannot be inferred who
Answer : D
Solution :
?it cannot be inferred who?
From given information, nobody can be held responsible.
8.An oil tank can be filled by pipe X in 5 hours and pipe Y in 4 hours, each pump working on
its own. When the oil tank is full and the drainage hole is open, the oil is drained in 20 hours.
6
If initially the tank was empty and someone started the two pumps together but left the
drainage hole open, how many hours will it tak for the tank to be filled? (Assume that the rate
of drainage is independent of the head)
A. 2.50
B. 1.50
C. 2.00
D. 4.00
Answer : A
Solution :
Pipe X will fill how much in one hour tank
Pipe Y will fill how much in one hour tank
Drainage will drain out how much water in 1 hour tank
? Total tank filled in one hour
tank gets filled in = 1 hour
? Full (i) tank gets filled in
9.Mohan, the manager, wants his four workers to work in pairs. No paper should work for
more than 5 hours. Ram and Johan have worked together for 5 hours. Krishna and Amir have
7
worked as a team for 2 hours. Krishan does not want to work with Ram whom should mohan
allot to work with Johan, if we wants all the workers to continue working?
A. Amir
B. Krishna
C. Ram
D. None of the three
Answer : B
Solution :
Conditions given:
(i) Ram & John have worked for 5 hours.
(ii) Krishna doesn?t want to work with Ram.
(iii) No pair should work beyond 5 hours.
Hence, Krishna should work with John to satisfy the above conditions.
10.?Popular Hindi fiction, despite ? or perhaps because of ? its wide reach, often does not
appear in our cinema. As ideals that viewers are meant to look up to rather than identify with,
Hindi film protagonisits usually read books of apsirational value: textbooks, English books,
or high value literature?.
Which one of the following CANNOT be inferred from the paragraph above?
A. Textbooks, English books or high literature have apsirational value, but not popular Hindi
fiction
B. People do not look up to writers of textbooks, English book or high value literature
C. Though popular hindi fiction was wide readh, it often does not appear in the movies
D. Protagonists in Hindi movies, being ideals for viewers, read only books of aspirational
value.
Answer : B
Solution :
People do not look up to writers of textbooks, English book or high value literature.
8
Civil Engineering
11.What is curl of the vector field 2x
2
yi + 5z
2
j - 4yzk?
A. - 14zi - 2x
2
k
B. 6zi + 4xj - 2x
2
k
C. 6zi + 8xyj + 2x
2
yk
D. -14zi + 6yj + 2x
2
k
Answer : A
Solution :
12.Analysis of a water sample revealed that the sample contains the following species.
9
Concentrations of which of the species will be required to compute alkalinity?
A.
B.
C.
D.
Answer : A
Solution :
H2CO3 and HCO3
-
never come together
13.The value of the function f(x) is given at n distinct values of x and its value is to be
interpolated at the point x
*
using all the n points. The estimate is obtained first by the
Lagrange polynomial, denoted by IL, and then by the Newton polynomial, denoted by IN.
Which one of the following statements is correct?
A. IL is always greater than IN
B. No definite relation exists between IL and IN.
C. IL is always less than IN
D. IL and IN are always equal
Answer : B
Solution :
Lagrange?s form is more efficient when you have to interpolate several data sets on the same
data point.
Newton?s form is more efficient when you have to interpolate data incrementally. So no
relationship between both.
14.If the fineness modulus of a sample of the fine aggregates is 4.3, the mean size of the
particles in the sample is between
10
A. 150 ?m and 300 ?m
B. 2.36 mm and 4.75 mm
C. 300 ?m and 600 ?m
D. 1.18 mm and 2.36 mm
Answer : D
Solution :
150 ?m, 300 ?m, 600 ?m, 1.18 mm,
2.36 mm, 4.75 mm, 10 mm, 20 mm,
40 mm, 80 mm
150 ? 1
300 ? 2
600 ? 3
4.75 - 6
15.The command area of a canal grows only one crop, i.e., wheat. The base period of wheat
is 120 days and its total water requirement, ?, is 40 cm. If the canal discharge is 2 m
3
/s, the
area, in hectares, rounded off to the nearest integer, which could be irrigated (neglecting all
losses) is ______________
Answer :
Solution :
B = 120 days
? = 0.4 m
and ? = 8.64B/D
? D = 2592 ha per (m
3
/s)
? For 2m
3
/sec water, area will be 5184 ha
11
16.The characteristic compressive strength of concrete required in a project is 25 MPa and
standard deviation in the observed compressive strength expected at site is 4 MPa. The
average compressive strength of cubes tested at different water-cement (w/c) ratios using the
same material as is used for the project is given in the table.
The water-cement ratio (in percent, round off to the lower integer) to be used in the mix
is________
Answer :
Solution :
fck = 25 ; ? = 4 MPa
fm = fck + 1.65? = 31.6 MPa
Using interpolation
= 46.7 (Rounded off to the lowest integer).
17.A solid sphere of radius, r, and made of material with density ?s, is moving through the
atmosphere (constant pressure, p) with a velocity, ?. The net force ONLY due to atmospheric
pressure (Fp) acting on the sphere at any time, t, is
A.
B. Zero
C. ?r
2
p
D. 4?r
2
p
Answer : B
Solution :
Force = area ? P
12
Net force will be zero as pressure acts from all sides.
18.An earthen dam of height H is made of cohesive soil whose cohesion and unit weight are c
and ?, respectively. If the factor of safety against cohesion is Fc, the Taylor?s stability
A.
B.
C.
D.
Answer : C
Solution :
Taylor?s stability number,
19.A closed thin walled tube has thickness, t, mean enclosed area within the boundary of the
centrline of tube?s thickness, Am, and shear stress ?. Torsional moment of resistance, T of the
section would be
A.
B.
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2
GATE CE 2019 Set 2: Questions & Solutions
General Aptitude
1.Daytime temperature in Delhi can ______ 40?C
A. Peak
B. reach
C. get
D. stand
Answer : B
Solution :
Daytime temperature in Delhi can reach 40?C
2.The growth rate of ABC Motors in 2017 was the same ________ XYZ Motors in 2016 .
A. As those of
B. As that off
C. As that of
D. As off
Answer : C
Solution :
The growth rate of ABC Motors in 2017 was the same as that of XYZ Motors in 2016.
3.Suresh wanted to lay a new carpet in his new mansion with an area of 70 55 sq. mts.
However an area of 550 sq. mts had to be left out for flower pots. If the cost of carpet is Rs.
50 per sq. mts, how much money (in Rs.) will be spent by Suresh for the carpet now?
A. Rs. 1,65,000
B. Rs. 1,92,500
C. Rs. 1,27,500
D. Rs. 2,75,000
Answer : A
3
Solution :
Area of mansion = 70 ? 55 = 3850 m
2
Area for flower pots = 550 m
2
? Area left for carpet = 3850 ? 550 = 3300m
2
? Cost = 3300 ? 50 = 165000
4.A retaining wall with measurements 30 m ? 12 m ? 6 m was constructed with bricks of
dimensions 8 cm ? 6 cm. If 60% of the wall consists of bricks used for the construction is
___________ lakhs.
A. 45
B. 30
C. 40
D. 75
Answer : A
Solution :
Volume of wall = 30 ? 12 ? 6 = 2160 m
3
= 2160 ? 106 cm
3
Total volume of bricks required = 2160 ? 106 ? 0.6 cm
3
= 1296 ? 106 cm
3
Volume of one brick = 8 ? 6 ? 6 = 288 cm
3
? No. of bricks required
= 4.5 ? 10
6
= 45 lakhs
5.Hima Das was _______ only Indian athlete to win _____________ gold for India.
A. the, many
B. an, the
C. an, a
4
D. the, a
Answer : D
Solution :
Hima Das was the only Indian athlete to win a gold for India.
6.Population of state X increased by x% and the population of state Y increased by y% from
2001 to 2011. Assume that x is greater than y. Let P be the ratio of the population of state X
to state Y in a given year. The percentage increase in P from 2001 to 2011 is_____________
A. x ? y
B.
C.
D.
Answer : C
Solution :
Let population of X is ?A? in 2001
and Population of Y is ?B? in 2001
? Population of A in 2011
& Population of B in 2011
Given,
5
% increase in P
7.The Newspaper report that over 500 hectares of tribal land spread across 28 tribal
settlements in Mohinitampuram forest division have already been ?alienated?. A top forest
official said, ?First the tribals are duped out of their land holdings. Second, the families thus
rendered landless are often forced to encroach further into the forests?.
On the basis of the information available in the paragraph, _______ is/are responsible for
duping the tribals.
A. The newspaper
B. Landless families
C. forest officials
D. it cannot be inferred who
Answer : D
Solution :
?it cannot be inferred who?
From given information, nobody can be held responsible.
8.An oil tank can be filled by pipe X in 5 hours and pipe Y in 4 hours, each pump working on
its own. When the oil tank is full and the drainage hole is open, the oil is drained in 20 hours.
6
If initially the tank was empty and someone started the two pumps together but left the
drainage hole open, how many hours will it tak for the tank to be filled? (Assume that the rate
of drainage is independent of the head)
A. 2.50
B. 1.50
C. 2.00
D. 4.00
Answer : A
Solution :
Pipe X will fill how much in one hour tank
Pipe Y will fill how much in one hour tank
Drainage will drain out how much water in 1 hour tank
? Total tank filled in one hour
tank gets filled in = 1 hour
? Full (i) tank gets filled in
9.Mohan, the manager, wants his four workers to work in pairs. No paper should work for
more than 5 hours. Ram and Johan have worked together for 5 hours. Krishna and Amir have
7
worked as a team for 2 hours. Krishan does not want to work with Ram whom should mohan
allot to work with Johan, if we wants all the workers to continue working?
A. Amir
B. Krishna
C. Ram
D. None of the three
Answer : B
Solution :
Conditions given:
(i) Ram & John have worked for 5 hours.
(ii) Krishna doesn?t want to work with Ram.
(iii) No pair should work beyond 5 hours.
Hence, Krishna should work with John to satisfy the above conditions.
10.?Popular Hindi fiction, despite ? or perhaps because of ? its wide reach, often does not
appear in our cinema. As ideals that viewers are meant to look up to rather than identify with,
Hindi film protagonisits usually read books of apsirational value: textbooks, English books,
or high value literature?.
Which one of the following CANNOT be inferred from the paragraph above?
A. Textbooks, English books or high literature have apsirational value, but not popular Hindi
fiction
B. People do not look up to writers of textbooks, English book or high value literature
C. Though popular hindi fiction was wide readh, it often does not appear in the movies
D. Protagonists in Hindi movies, being ideals for viewers, read only books of aspirational
value.
Answer : B
Solution :
People do not look up to writers of textbooks, English book or high value literature.
8
Civil Engineering
11.What is curl of the vector field 2x
2
yi + 5z
2
j - 4yzk?
A. - 14zi - 2x
2
k
B. 6zi + 4xj - 2x
2
k
C. 6zi + 8xyj + 2x
2
yk
D. -14zi + 6yj + 2x
2
k
Answer : A
Solution :
12.Analysis of a water sample revealed that the sample contains the following species.
9
Concentrations of which of the species will be required to compute alkalinity?
A.
B.
C.
D.
Answer : A
Solution :
H2CO3 and HCO3
-
never come together
13.The value of the function f(x) is given at n distinct values of x and its value is to be
interpolated at the point x
*
using all the n points. The estimate is obtained first by the
Lagrange polynomial, denoted by IL, and then by the Newton polynomial, denoted by IN.
Which one of the following statements is correct?
A. IL is always greater than IN
B. No definite relation exists between IL and IN.
C. IL is always less than IN
D. IL and IN are always equal
Answer : B
Solution :
Lagrange?s form is more efficient when you have to interpolate several data sets on the same
data point.
Newton?s form is more efficient when you have to interpolate data incrementally. So no
relationship between both.
14.If the fineness modulus of a sample of the fine aggregates is 4.3, the mean size of the
particles in the sample is between
10
A. 150 ?m and 300 ?m
B. 2.36 mm and 4.75 mm
C. 300 ?m and 600 ?m
D. 1.18 mm and 2.36 mm
Answer : D
Solution :
150 ?m, 300 ?m, 600 ?m, 1.18 mm,
2.36 mm, 4.75 mm, 10 mm, 20 mm,
40 mm, 80 mm
150 ? 1
300 ? 2
600 ? 3
4.75 - 6
15.The command area of a canal grows only one crop, i.e., wheat. The base period of wheat
is 120 days and its total water requirement, ?, is 40 cm. If the canal discharge is 2 m
3
/s, the
area, in hectares, rounded off to the nearest integer, which could be irrigated (neglecting all
losses) is ______________
Answer :
Solution :
B = 120 days
? = 0.4 m
and ? = 8.64B/D
? D = 2592 ha per (m
3
/s)
? For 2m
3
/sec water, area will be 5184 ha
11
16.The characteristic compressive strength of concrete required in a project is 25 MPa and
standard deviation in the observed compressive strength expected at site is 4 MPa. The
average compressive strength of cubes tested at different water-cement (w/c) ratios using the
same material as is used for the project is given in the table.
The water-cement ratio (in percent, round off to the lower integer) to be used in the mix
is________
Answer :
Solution :
fck = 25 ; ? = 4 MPa
fm = fck + 1.65? = 31.6 MPa
Using interpolation
= 46.7 (Rounded off to the lowest integer).
17.A solid sphere of radius, r, and made of material with density ?s, is moving through the
atmosphere (constant pressure, p) with a velocity, ?. The net force ONLY due to atmospheric
pressure (Fp) acting on the sphere at any time, t, is
A.
B. Zero
C. ?r
2
p
D. 4?r
2
p
Answer : B
Solution :
Force = area ? P
12
Net force will be zero as pressure acts from all sides.
18.An earthen dam of height H is made of cohesive soil whose cohesion and unit weight are c
and ?, respectively. If the factor of safety against cohesion is Fc, the Taylor?s stability
A.
B.
C.
D.
Answer : C
Solution :
Taylor?s stability number,
19.A closed thin walled tube has thickness, t, mean enclosed area within the boundary of the
centrline of tube?s thickness, Am, and shear stress ?. Torsional moment of resistance, T of the
section would be
A.
B.
13
C.
D.
Answer : A
Solution :
20.For a channel section subjected to a downward vertical shear force at its centroid, which
one of the following represents the correct distribution of shear stress in flange and web?
A.
B.
C.
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2
GATE CE 2019 Set 2: Questions & Solutions
General Aptitude
1.Daytime temperature in Delhi can ______ 40?C
A. Peak
B. reach
C. get
D. stand
Answer : B
Solution :
Daytime temperature in Delhi can reach 40?C
2.The growth rate of ABC Motors in 2017 was the same ________ XYZ Motors in 2016 .
A. As those of
B. As that off
C. As that of
D. As off
Answer : C
Solution :
The growth rate of ABC Motors in 2017 was the same as that of XYZ Motors in 2016.
3.Suresh wanted to lay a new carpet in his new mansion with an area of 70 55 sq. mts.
However an area of 550 sq. mts had to be left out for flower pots. If the cost of carpet is Rs.
50 per sq. mts, how much money (in Rs.) will be spent by Suresh for the carpet now?
A. Rs. 1,65,000
B. Rs. 1,92,500
C. Rs. 1,27,500
D. Rs. 2,75,000
Answer : A
3
Solution :
Area of mansion = 70 ? 55 = 3850 m
2
Area for flower pots = 550 m
2
? Area left for carpet = 3850 ? 550 = 3300m
2
? Cost = 3300 ? 50 = 165000
4.A retaining wall with measurements 30 m ? 12 m ? 6 m was constructed with bricks of
dimensions 8 cm ? 6 cm. If 60% of the wall consists of bricks used for the construction is
___________ lakhs.
A. 45
B. 30
C. 40
D. 75
Answer : A
Solution :
Volume of wall = 30 ? 12 ? 6 = 2160 m
3
= 2160 ? 106 cm
3
Total volume of bricks required = 2160 ? 106 ? 0.6 cm
3
= 1296 ? 106 cm
3
Volume of one brick = 8 ? 6 ? 6 = 288 cm
3
? No. of bricks required
= 4.5 ? 10
6
= 45 lakhs
5.Hima Das was _______ only Indian athlete to win _____________ gold for India.
A. the, many
B. an, the
C. an, a
4
D. the, a
Answer : D
Solution :
Hima Das was the only Indian athlete to win a gold for India.
6.Population of state X increased by x% and the population of state Y increased by y% from
2001 to 2011. Assume that x is greater than y. Let P be the ratio of the population of state X
to state Y in a given year. The percentage increase in P from 2001 to 2011 is_____________
A. x ? y
B.
C.
D.
Answer : C
Solution :
Let population of X is ?A? in 2001
and Population of Y is ?B? in 2001
? Population of A in 2011
& Population of B in 2011
Given,
5
% increase in P
7.The Newspaper report that over 500 hectares of tribal land spread across 28 tribal
settlements in Mohinitampuram forest division have already been ?alienated?. A top forest
official said, ?First the tribals are duped out of their land holdings. Second, the families thus
rendered landless are often forced to encroach further into the forests?.
On the basis of the information available in the paragraph, _______ is/are responsible for
duping the tribals.
A. The newspaper
B. Landless families
C. forest officials
D. it cannot be inferred who
Answer : D
Solution :
?it cannot be inferred who?
From given information, nobody can be held responsible.
8.An oil tank can be filled by pipe X in 5 hours and pipe Y in 4 hours, each pump working on
its own. When the oil tank is full and the drainage hole is open, the oil is drained in 20 hours.
6
If initially the tank was empty and someone started the two pumps together but left the
drainage hole open, how many hours will it tak for the tank to be filled? (Assume that the rate
of drainage is independent of the head)
A. 2.50
B. 1.50
C. 2.00
D. 4.00
Answer : A
Solution :
Pipe X will fill how much in one hour tank
Pipe Y will fill how much in one hour tank
Drainage will drain out how much water in 1 hour tank
? Total tank filled in one hour
tank gets filled in = 1 hour
? Full (i) tank gets filled in
9.Mohan, the manager, wants his four workers to work in pairs. No paper should work for
more than 5 hours. Ram and Johan have worked together for 5 hours. Krishna and Amir have
7
worked as a team for 2 hours. Krishan does not want to work with Ram whom should mohan
allot to work with Johan, if we wants all the workers to continue working?
A. Amir
B. Krishna
C. Ram
D. None of the three
Answer : B
Solution :
Conditions given:
(i) Ram & John have worked for 5 hours.
(ii) Krishna doesn?t want to work with Ram.
(iii) No pair should work beyond 5 hours.
Hence, Krishna should work with John to satisfy the above conditions.
10.?Popular Hindi fiction, despite ? or perhaps because of ? its wide reach, often does not
appear in our cinema. As ideals that viewers are meant to look up to rather than identify with,
Hindi film protagonisits usually read books of apsirational value: textbooks, English books,
or high value literature?.
Which one of the following CANNOT be inferred from the paragraph above?
A. Textbooks, English books or high literature have apsirational value, but not popular Hindi
fiction
B. People do not look up to writers of textbooks, English book or high value literature
C. Though popular hindi fiction was wide readh, it often does not appear in the movies
D. Protagonists in Hindi movies, being ideals for viewers, read only books of aspirational
value.
Answer : B
Solution :
People do not look up to writers of textbooks, English book or high value literature.
8
Civil Engineering
11.What is curl of the vector field 2x
2
yi + 5z
2
j - 4yzk?
A. - 14zi - 2x
2
k
B. 6zi + 4xj - 2x
2
k
C. 6zi + 8xyj + 2x
2
yk
D. -14zi + 6yj + 2x
2
k
Answer : A
Solution :
12.Analysis of a water sample revealed that the sample contains the following species.
9
Concentrations of which of the species will be required to compute alkalinity?
A.
B.
C.
D.
Answer : A
Solution :
H2CO3 and HCO3
-
never come together
13.The value of the function f(x) is given at n distinct values of x and its value is to be
interpolated at the point x
*
using all the n points. The estimate is obtained first by the
Lagrange polynomial, denoted by IL, and then by the Newton polynomial, denoted by IN.
Which one of the following statements is correct?
A. IL is always greater than IN
B. No definite relation exists between IL and IN.
C. IL is always less than IN
D. IL and IN are always equal
Answer : B
Solution :
Lagrange?s form is more efficient when you have to interpolate several data sets on the same
data point.
Newton?s form is more efficient when you have to interpolate data incrementally. So no
relationship between both.
14.If the fineness modulus of a sample of the fine aggregates is 4.3, the mean size of the
particles in the sample is between
10
A. 150 ?m and 300 ?m
B. 2.36 mm and 4.75 mm
C. 300 ?m and 600 ?m
D. 1.18 mm and 2.36 mm
Answer : D
Solution :
150 ?m, 300 ?m, 600 ?m, 1.18 mm,
2.36 mm, 4.75 mm, 10 mm, 20 mm,
40 mm, 80 mm
150 ? 1
300 ? 2
600 ? 3
4.75 - 6
15.The command area of a canal grows only one crop, i.e., wheat. The base period of wheat
is 120 days and its total water requirement, ?, is 40 cm. If the canal discharge is 2 m
3
/s, the
area, in hectares, rounded off to the nearest integer, which could be irrigated (neglecting all
losses) is ______________
Answer :
Solution :
B = 120 days
? = 0.4 m
and ? = 8.64B/D
? D = 2592 ha per (m
3
/s)
? For 2m
3
/sec water, area will be 5184 ha
11
16.The characteristic compressive strength of concrete required in a project is 25 MPa and
standard deviation in the observed compressive strength expected at site is 4 MPa. The
average compressive strength of cubes tested at different water-cement (w/c) ratios using the
same material as is used for the project is given in the table.
The water-cement ratio (in percent, round off to the lower integer) to be used in the mix
is________
Answer :
Solution :
fck = 25 ; ? = 4 MPa
fm = fck + 1.65? = 31.6 MPa
Using interpolation
= 46.7 (Rounded off to the lowest integer).
17.A solid sphere of radius, r, and made of material with density ?s, is moving through the
atmosphere (constant pressure, p) with a velocity, ?. The net force ONLY due to atmospheric
pressure (Fp) acting on the sphere at any time, t, is
A.
B. Zero
C. ?r
2
p
D. 4?r
2
p
Answer : B
Solution :
Force = area ? P
12
Net force will be zero as pressure acts from all sides.
18.An earthen dam of height H is made of cohesive soil whose cohesion and unit weight are c
and ?, respectively. If the factor of safety against cohesion is Fc, the Taylor?s stability
A.
B.
C.
D.
Answer : C
Solution :
Taylor?s stability number,
19.A closed thin walled tube has thickness, t, mean enclosed area within the boundary of the
centrline of tube?s thickness, Am, and shear stress ?. Torsional moment of resistance, T of the
section would be
A.
B.
13
C.
D.
Answer : A
Solution :
20.For a channel section subjected to a downward vertical shear force at its centroid, which
one of the following represents the correct distribution of shear stress in flange and web?
A.
B.
C.
14
D.
Answer : C
Solution :
Standard result
21.The degree of static indeterminancy of the plane frame is shown in the figure is ________
Answer :
Solution :
Ds = 3C ? R'
C = 6
Ds = (3 ? 6 ? 2) ? 1 (due to hinge)
= 15
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2
GATE CE 2019 Set 2: Questions & Solutions
General Aptitude
1.Daytime temperature in Delhi can ______ 40?C
A. Peak
B. reach
C. get
D. stand
Answer : B
Solution :
Daytime temperature in Delhi can reach 40?C
2.The growth rate of ABC Motors in 2017 was the same ________ XYZ Motors in 2016 .
A. As those of
B. As that off
C. As that of
D. As off
Answer : C
Solution :
The growth rate of ABC Motors in 2017 was the same as that of XYZ Motors in 2016.
3.Suresh wanted to lay a new carpet in his new mansion with an area of 70 55 sq. mts.
However an area of 550 sq. mts had to be left out for flower pots. If the cost of carpet is Rs.
50 per sq. mts, how much money (in Rs.) will be spent by Suresh for the carpet now?
A. Rs. 1,65,000
B. Rs. 1,92,500
C. Rs. 1,27,500
D. Rs. 2,75,000
Answer : A
3
Solution :
Area of mansion = 70 ? 55 = 3850 m
2
Area for flower pots = 550 m
2
? Area left for carpet = 3850 ? 550 = 3300m
2
? Cost = 3300 ? 50 = 165000
4.A retaining wall with measurements 30 m ? 12 m ? 6 m was constructed with bricks of
dimensions 8 cm ? 6 cm. If 60% of the wall consists of bricks used for the construction is
___________ lakhs.
A. 45
B. 30
C. 40
D. 75
Answer : A
Solution :
Volume of wall = 30 ? 12 ? 6 = 2160 m
3
= 2160 ? 106 cm
3
Total volume of bricks required = 2160 ? 106 ? 0.6 cm
3
= 1296 ? 106 cm
3
Volume of one brick = 8 ? 6 ? 6 = 288 cm
3
? No. of bricks required
= 4.5 ? 10
6
= 45 lakhs
5.Hima Das was _______ only Indian athlete to win _____________ gold for India.
A. the, many
B. an, the
C. an, a
4
D. the, a
Answer : D
Solution :
Hima Das was the only Indian athlete to win a gold for India.
6.Population of state X increased by x% and the population of state Y increased by y% from
2001 to 2011. Assume that x is greater than y. Let P be the ratio of the population of state X
to state Y in a given year. The percentage increase in P from 2001 to 2011 is_____________
A. x ? y
B.
C.
D.
Answer : C
Solution :
Let population of X is ?A? in 2001
and Population of Y is ?B? in 2001
? Population of A in 2011
& Population of B in 2011
Given,
5
% increase in P
7.The Newspaper report that over 500 hectares of tribal land spread across 28 tribal
settlements in Mohinitampuram forest division have already been ?alienated?. A top forest
official said, ?First the tribals are duped out of their land holdings. Second, the families thus
rendered landless are often forced to encroach further into the forests?.
On the basis of the information available in the paragraph, _______ is/are responsible for
duping the tribals.
A. The newspaper
B. Landless families
C. forest officials
D. it cannot be inferred who
Answer : D
Solution :
?it cannot be inferred who?
From given information, nobody can be held responsible.
8.An oil tank can be filled by pipe X in 5 hours and pipe Y in 4 hours, each pump working on
its own. When the oil tank is full and the drainage hole is open, the oil is drained in 20 hours.
6
If initially the tank was empty and someone started the two pumps together but left the
drainage hole open, how many hours will it tak for the tank to be filled? (Assume that the rate
of drainage is independent of the head)
A. 2.50
B. 1.50
C. 2.00
D. 4.00
Answer : A
Solution :
Pipe X will fill how much in one hour tank
Pipe Y will fill how much in one hour tank
Drainage will drain out how much water in 1 hour tank
? Total tank filled in one hour
tank gets filled in = 1 hour
? Full (i) tank gets filled in
9.Mohan, the manager, wants his four workers to work in pairs. No paper should work for
more than 5 hours. Ram and Johan have worked together for 5 hours. Krishna and Amir have
7
worked as a team for 2 hours. Krishan does not want to work with Ram whom should mohan
allot to work with Johan, if we wants all the workers to continue working?
A. Amir
B. Krishna
C. Ram
D. None of the three
Answer : B
Solution :
Conditions given:
(i) Ram & John have worked for 5 hours.
(ii) Krishna doesn?t want to work with Ram.
(iii) No pair should work beyond 5 hours.
Hence, Krishna should work with John to satisfy the above conditions.
10.?Popular Hindi fiction, despite ? or perhaps because of ? its wide reach, often does not
appear in our cinema. As ideals that viewers are meant to look up to rather than identify with,
Hindi film protagonisits usually read books of apsirational value: textbooks, English books,
or high value literature?.
Which one of the following CANNOT be inferred from the paragraph above?
A. Textbooks, English books or high literature have apsirational value, but not popular Hindi
fiction
B. People do not look up to writers of textbooks, English book or high value literature
C. Though popular hindi fiction was wide readh, it often does not appear in the movies
D. Protagonists in Hindi movies, being ideals for viewers, read only books of aspirational
value.
Answer : B
Solution :
People do not look up to writers of textbooks, English book or high value literature.
8
Civil Engineering
11.What is curl of the vector field 2x
2
yi + 5z
2
j - 4yzk?
A. - 14zi - 2x
2
k
B. 6zi + 4xj - 2x
2
k
C. 6zi + 8xyj + 2x
2
yk
D. -14zi + 6yj + 2x
2
k
Answer : A
Solution :
12.Analysis of a water sample revealed that the sample contains the following species.
9
Concentrations of which of the species will be required to compute alkalinity?
A.
B.
C.
D.
Answer : A
Solution :
H2CO3 and HCO3
-
never come together
13.The value of the function f(x) is given at n distinct values of x and its value is to be
interpolated at the point x
*
using all the n points. The estimate is obtained first by the
Lagrange polynomial, denoted by IL, and then by the Newton polynomial, denoted by IN.
Which one of the following statements is correct?
A. IL is always greater than IN
B. No definite relation exists between IL and IN.
C. IL is always less than IN
D. IL and IN are always equal
Answer : B
Solution :
Lagrange?s form is more efficient when you have to interpolate several data sets on the same
data point.
Newton?s form is more efficient when you have to interpolate data incrementally. So no
relationship between both.
14.If the fineness modulus of a sample of the fine aggregates is 4.3, the mean size of the
particles in the sample is between
10
A. 150 ?m and 300 ?m
B. 2.36 mm and 4.75 mm
C. 300 ?m and 600 ?m
D. 1.18 mm and 2.36 mm
Answer : D
Solution :
150 ?m, 300 ?m, 600 ?m, 1.18 mm,
2.36 mm, 4.75 mm, 10 mm, 20 mm,
40 mm, 80 mm
150 ? 1
300 ? 2
600 ? 3
4.75 - 6
15.The command area of a canal grows only one crop, i.e., wheat. The base period of wheat
is 120 days and its total water requirement, ?, is 40 cm. If the canal discharge is 2 m
3
/s, the
area, in hectares, rounded off to the nearest integer, which could be irrigated (neglecting all
losses) is ______________
Answer :
Solution :
B = 120 days
? = 0.4 m
and ? = 8.64B/D
? D = 2592 ha per (m
3
/s)
? For 2m
3
/sec water, area will be 5184 ha
11
16.The characteristic compressive strength of concrete required in a project is 25 MPa and
standard deviation in the observed compressive strength expected at site is 4 MPa. The
average compressive strength of cubes tested at different water-cement (w/c) ratios using the
same material as is used for the project is given in the table.
The water-cement ratio (in percent, round off to the lower integer) to be used in the mix
is________
Answer :
Solution :
fck = 25 ; ? = 4 MPa
fm = fck + 1.65? = 31.6 MPa
Using interpolation
= 46.7 (Rounded off to the lowest integer).
17.A solid sphere of radius, r, and made of material with density ?s, is moving through the
atmosphere (constant pressure, p) with a velocity, ?. The net force ONLY due to atmospheric
pressure (Fp) acting on the sphere at any time, t, is
A.
B. Zero
C. ?r
2
p
D. 4?r
2
p
Answer : B
Solution :
Force = area ? P
12
Net force will be zero as pressure acts from all sides.
18.An earthen dam of height H is made of cohesive soil whose cohesion and unit weight are c
and ?, respectively. If the factor of safety against cohesion is Fc, the Taylor?s stability
A.
B.
C.
D.
Answer : C
Solution :
Taylor?s stability number,
19.A closed thin walled tube has thickness, t, mean enclosed area within the boundary of the
centrline of tube?s thickness, Am, and shear stress ?. Torsional moment of resistance, T of the
section would be
A.
B.
13
C.
D.
Answer : A
Solution :
20.For a channel section subjected to a downward vertical shear force at its centroid, which
one of the following represents the correct distribution of shear stress in flange and web?
A.
B.
C.
14
D.
Answer : C
Solution :
Standard result
21.The degree of static indeterminancy of the plane frame is shown in the figure is ________
Answer :
Solution :
Ds = 3C ? R'
C = 6
Ds = (3 ? 6 ? 2) ? 1 (due to hinge)
= 15
15
22.Structural failures considered in the mechanistic method of bituminous pavement design
are
A. Shear and slippage
B. Fatique and Rutting
C. Fatique and shear
D. Rutting and shear
Answer : B
Solution :
As per IRC66:2012
23.Which one of the options contains ONLY primary air pollutants?
A. Ozone and peroxyacetyl nitrate
B. Nitrogen oxides and peroxyacetyl nitrate
C. Hydrocarbons and nitrogen oxides
D. Hydrocarbons and ozone
Answer : C
Solution :
Ozone and PAN are secondary air pollutants.
24.The following inequality is true for all x close to 0.
What is the value of
A. 2
B. 1/2
C. 0
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2
GATE CE 2019 Set 2: Questions & Solutions
General Aptitude
1.Daytime temperature in Delhi can ______ 40?C
A. Peak
B. reach
C. get
D. stand
Answer : B
Solution :
Daytime temperature in Delhi can reach 40?C
2.The growth rate of ABC Motors in 2017 was the same ________ XYZ Motors in 2016 .
A. As those of
B. As that off
C. As that of
D. As off
Answer : C
Solution :
The growth rate of ABC Motors in 2017 was the same as that of XYZ Motors in 2016.
3.Suresh wanted to lay a new carpet in his new mansion with an area of 70 55 sq. mts.
However an area of 550 sq. mts had to be left out for flower pots. If the cost of carpet is Rs.
50 per sq. mts, how much money (in Rs.) will be spent by Suresh for the carpet now?
A. Rs. 1,65,000
B. Rs. 1,92,500
C. Rs. 1,27,500
D. Rs. 2,75,000
Answer : A
3
Solution :
Area of mansion = 70 ? 55 = 3850 m
2
Area for flower pots = 550 m
2
? Area left for carpet = 3850 ? 550 = 3300m
2
? Cost = 3300 ? 50 = 165000
4.A retaining wall with measurements 30 m ? 12 m ? 6 m was constructed with bricks of
dimensions 8 cm ? 6 cm. If 60% of the wall consists of bricks used for the construction is
___________ lakhs.
A. 45
B. 30
C. 40
D. 75
Answer : A
Solution :
Volume of wall = 30 ? 12 ? 6 = 2160 m
3
= 2160 ? 106 cm
3
Total volume of bricks required = 2160 ? 106 ? 0.6 cm
3
= 1296 ? 106 cm
3
Volume of one brick = 8 ? 6 ? 6 = 288 cm
3
? No. of bricks required
= 4.5 ? 10
6
= 45 lakhs
5.Hima Das was _______ only Indian athlete to win _____________ gold for India.
A. the, many
B. an, the
C. an, a
4
D. the, a
Answer : D
Solution :
Hima Das was the only Indian athlete to win a gold for India.
6.Population of state X increased by x% and the population of state Y increased by y% from
2001 to 2011. Assume that x is greater than y. Let P be the ratio of the population of state X
to state Y in a given year. The percentage increase in P from 2001 to 2011 is_____________
A. x ? y
B.
C.
D.
Answer : C
Solution :
Let population of X is ?A? in 2001
and Population of Y is ?B? in 2001
? Population of A in 2011
& Population of B in 2011
Given,
5
% increase in P
7.The Newspaper report that over 500 hectares of tribal land spread across 28 tribal
settlements in Mohinitampuram forest division have already been ?alienated?. A top forest
official said, ?First the tribals are duped out of their land holdings. Second, the families thus
rendered landless are often forced to encroach further into the forests?.
On the basis of the information available in the paragraph, _______ is/are responsible for
duping the tribals.
A. The newspaper
B. Landless families
C. forest officials
D. it cannot be inferred who
Answer : D
Solution :
?it cannot be inferred who?
From given information, nobody can be held responsible.
8.An oil tank can be filled by pipe X in 5 hours and pipe Y in 4 hours, each pump working on
its own. When the oil tank is full and the drainage hole is open, the oil is drained in 20 hours.
6
If initially the tank was empty and someone started the two pumps together but left the
drainage hole open, how many hours will it tak for the tank to be filled? (Assume that the rate
of drainage is independent of the head)
A. 2.50
B. 1.50
C. 2.00
D. 4.00
Answer : A
Solution :
Pipe X will fill how much in one hour tank
Pipe Y will fill how much in one hour tank
Drainage will drain out how much water in 1 hour tank
? Total tank filled in one hour
tank gets filled in = 1 hour
? Full (i) tank gets filled in
9.Mohan, the manager, wants his four workers to work in pairs. No paper should work for
more than 5 hours. Ram and Johan have worked together for 5 hours. Krishna and Amir have
7
worked as a team for 2 hours. Krishan does not want to work with Ram whom should mohan
allot to work with Johan, if we wants all the workers to continue working?
A. Amir
B. Krishna
C. Ram
D. None of the three
Answer : B
Solution :
Conditions given:
(i) Ram & John have worked for 5 hours.
(ii) Krishna doesn?t want to work with Ram.
(iii) No pair should work beyond 5 hours.
Hence, Krishna should work with John to satisfy the above conditions.
10.?Popular Hindi fiction, despite ? or perhaps because of ? its wide reach, often does not
appear in our cinema. As ideals that viewers are meant to look up to rather than identify with,
Hindi film protagonisits usually read books of apsirational value: textbooks, English books,
or high value literature?.
Which one of the following CANNOT be inferred from the paragraph above?
A. Textbooks, English books or high literature have apsirational value, but not popular Hindi
fiction
B. People do not look up to writers of textbooks, English book or high value literature
C. Though popular hindi fiction was wide readh, it often does not appear in the movies
D. Protagonists in Hindi movies, being ideals for viewers, read only books of aspirational
value.
Answer : B
Solution :
People do not look up to writers of textbooks, English book or high value literature.
8
Civil Engineering
11.What is curl of the vector field 2x
2
yi + 5z
2
j - 4yzk?
A. - 14zi - 2x
2
k
B. 6zi + 4xj - 2x
2
k
C. 6zi + 8xyj + 2x
2
yk
D. -14zi + 6yj + 2x
2
k
Answer : A
Solution :
12.Analysis of a water sample revealed that the sample contains the following species.
9
Concentrations of which of the species will be required to compute alkalinity?
A.
B.
C.
D.
Answer : A
Solution :
H2CO3 and HCO3
-
never come together
13.The value of the function f(x) is given at n distinct values of x and its value is to be
interpolated at the point x
*
using all the n points. The estimate is obtained first by the
Lagrange polynomial, denoted by IL, and then by the Newton polynomial, denoted by IN.
Which one of the following statements is correct?
A. IL is always greater than IN
B. No definite relation exists between IL and IN.
C. IL is always less than IN
D. IL and IN are always equal
Answer : B
Solution :
Lagrange?s form is more efficient when you have to interpolate several data sets on the same
data point.
Newton?s form is more efficient when you have to interpolate data incrementally. So no
relationship between both.
14.If the fineness modulus of a sample of the fine aggregates is 4.3, the mean size of the
particles in the sample is between
10
A. 150 ?m and 300 ?m
B. 2.36 mm and 4.75 mm
C. 300 ?m and 600 ?m
D. 1.18 mm and 2.36 mm
Answer : D
Solution :
150 ?m, 300 ?m, 600 ?m, 1.18 mm,
2.36 mm, 4.75 mm, 10 mm, 20 mm,
40 mm, 80 mm
150 ? 1
300 ? 2
600 ? 3
4.75 - 6
15.The command area of a canal grows only one crop, i.e., wheat. The base period of wheat
is 120 days and its total water requirement, ?, is 40 cm. If the canal discharge is 2 m
3
/s, the
area, in hectares, rounded off to the nearest integer, which could be irrigated (neglecting all
losses) is ______________
Answer :
Solution :
B = 120 days
? = 0.4 m
and ? = 8.64B/D
? D = 2592 ha per (m
3
/s)
? For 2m
3
/sec water, area will be 5184 ha
11
16.The characteristic compressive strength of concrete required in a project is 25 MPa and
standard deviation in the observed compressive strength expected at site is 4 MPa. The
average compressive strength of cubes tested at different water-cement (w/c) ratios using the
same material as is used for the project is given in the table.
The water-cement ratio (in percent, round off to the lower integer) to be used in the mix
is________
Answer :
Solution :
fck = 25 ; ? = 4 MPa
fm = fck + 1.65? = 31.6 MPa
Using interpolation
= 46.7 (Rounded off to the lowest integer).
17.A solid sphere of radius, r, and made of material with density ?s, is moving through the
atmosphere (constant pressure, p) with a velocity, ?. The net force ONLY due to atmospheric
pressure (Fp) acting on the sphere at any time, t, is
A.
B. Zero
C. ?r
2
p
D. 4?r
2
p
Answer : B
Solution :
Force = area ? P
12
Net force will be zero as pressure acts from all sides.
18.An earthen dam of height H is made of cohesive soil whose cohesion and unit weight are c
and ?, respectively. If the factor of safety against cohesion is Fc, the Taylor?s stability
A.
B.
C.
D.
Answer : C
Solution :
Taylor?s stability number,
19.A closed thin walled tube has thickness, t, mean enclosed area within the boundary of the
centrline of tube?s thickness, Am, and shear stress ?. Torsional moment of resistance, T of the
section would be
A.
B.
13
C.
D.
Answer : A
Solution :
20.For a channel section subjected to a downward vertical shear force at its centroid, which
one of the following represents the correct distribution of shear stress in flange and web?
A.
B.
C.
14
D.
Answer : C
Solution :
Standard result
21.The degree of static indeterminancy of the plane frame is shown in the figure is ________
Answer :
Solution :
Ds = 3C ? R'
C = 6
Ds = (3 ? 6 ? 2) ? 1 (due to hinge)
= 15
15
22.Structural failures considered in the mechanistic method of bituminous pavement design
are
A. Shear and slippage
B. Fatique and Rutting
C. Fatique and shear
D. Rutting and shear
Answer : B
Solution :
As per IRC66:2012
23.Which one of the options contains ONLY primary air pollutants?
A. Ozone and peroxyacetyl nitrate
B. Nitrogen oxides and peroxyacetyl nitrate
C. Hydrocarbons and nitrogen oxides
D. Hydrocarbons and ozone
Answer : C
Solution :
Ozone and PAN are secondary air pollutants.
24.The following inequality is true for all x close to 0.
What is the value of
A. 2
B. 1/2
C. 0
16
D. 1
Answer : A
Solution :
It is form
L?s hospital rule (differentiate)
Putting 0 everywhere ? still form.
Differentiating numerator and denominator again,
25.The velocity field in a flow system is given by v = 2i + (x + y)j + (xyz)k. The acceleration
of the fluid at (1, 1, 2) is
A. j + k
B. 2i + 10 k
C. 4j + 10k
D. 4i + 12 k
Answer : C
Solution :
FirstRanker.com - FirstRanker's Choice
2
GATE CE 2019 Set 2: Questions & Solutions
General Aptitude
1.Daytime temperature in Delhi can ______ 40?C
A. Peak
B. reach
C. get
D. stand
Answer : B
Solution :
Daytime temperature in Delhi can reach 40?C
2.The growth rate of ABC Motors in 2017 was the same ________ XYZ Motors in 2016 .
A. As those of
B. As that off
C. As that of
D. As off
Answer : C
Solution :
The growth rate of ABC Motors in 2017 was the same as that of XYZ Motors in 2016.
3.Suresh wanted to lay a new carpet in his new mansion with an area of 70 55 sq. mts.
However an area of 550 sq. mts had to be left out for flower pots. If the cost of carpet is Rs.
50 per sq. mts, how much money (in Rs.) will be spent by Suresh for the carpet now?
A. Rs. 1,65,000
B. Rs. 1,92,500
C. Rs. 1,27,500
D. Rs. 2,75,000
Answer : A
3
Solution :
Area of mansion = 70 ? 55 = 3850 m
2
Area for flower pots = 550 m
2
? Area left for carpet = 3850 ? 550 = 3300m
2
? Cost = 3300 ? 50 = 165000
4.A retaining wall with measurements 30 m ? 12 m ? 6 m was constructed with bricks of
dimensions 8 cm ? 6 cm. If 60% of the wall consists of bricks used for the construction is
___________ lakhs.
A. 45
B. 30
C. 40
D. 75
Answer : A
Solution :
Volume of wall = 30 ? 12 ? 6 = 2160 m
3
= 2160 ? 106 cm
3
Total volume of bricks required = 2160 ? 106 ? 0.6 cm
3
= 1296 ? 106 cm
3
Volume of one brick = 8 ? 6 ? 6 = 288 cm
3
? No. of bricks required
= 4.5 ? 10
6
= 45 lakhs
5.Hima Das was _______ only Indian athlete to win _____________ gold for India.
A. the, many
B. an, the
C. an, a
4
D. the, a
Answer : D
Solution :
Hima Das was the only Indian athlete to win a gold for India.
6.Population of state X increased by x% and the population of state Y increased by y% from
2001 to 2011. Assume that x is greater than y. Let P be the ratio of the population of state X
to state Y in a given year. The percentage increase in P from 2001 to 2011 is_____________
A. x ? y
B.
C.
D.
Answer : C
Solution :
Let population of X is ?A? in 2001
and Population of Y is ?B? in 2001
? Population of A in 2011
& Population of B in 2011
Given,
5
% increase in P
7.The Newspaper report that over 500 hectares of tribal land spread across 28 tribal
settlements in Mohinitampuram forest division have already been ?alienated?. A top forest
official said, ?First the tribals are duped out of their land holdings. Second, the families thus
rendered landless are often forced to encroach further into the forests?.
On the basis of the information available in the paragraph, _______ is/are responsible for
duping the tribals.
A. The newspaper
B. Landless families
C. forest officials
D. it cannot be inferred who
Answer : D
Solution :
?it cannot be inferred who?
From given information, nobody can be held responsible.
8.An oil tank can be filled by pipe X in 5 hours and pipe Y in 4 hours, each pump working on
its own. When the oil tank is full and the drainage hole is open, the oil is drained in 20 hours.
6
If initially the tank was empty and someone started the two pumps together but left the
drainage hole open, how many hours will it tak for the tank to be filled? (Assume that the rate
of drainage is independent of the head)
A. 2.50
B. 1.50
C. 2.00
D. 4.00
Answer : A
Solution :
Pipe X will fill how much in one hour tank
Pipe Y will fill how much in one hour tank
Drainage will drain out how much water in 1 hour tank
? Total tank filled in one hour
tank gets filled in = 1 hour
? Full (i) tank gets filled in
9.Mohan, the manager, wants his four workers to work in pairs. No paper should work for
more than 5 hours. Ram and Johan have worked together for 5 hours. Krishna and Amir have
7
worked as a team for 2 hours. Krishan does not want to work with Ram whom should mohan
allot to work with Johan, if we wants all the workers to continue working?
A. Amir
B. Krishna
C. Ram
D. None of the three
Answer : B
Solution :
Conditions given:
(i) Ram & John have worked for 5 hours.
(ii) Krishna doesn?t want to work with Ram.
(iii) No pair should work beyond 5 hours.
Hence, Krishna should work with John to satisfy the above conditions.
10.?Popular Hindi fiction, despite ? or perhaps because of ? its wide reach, often does not
appear in our cinema. As ideals that viewers are meant to look up to rather than identify with,
Hindi film protagonisits usually read books of apsirational value: textbooks, English books,
or high value literature?.
Which one of the following CANNOT be inferred from the paragraph above?
A. Textbooks, English books or high literature have apsirational value, but not popular Hindi
fiction
B. People do not look up to writers of textbooks, English book or high value literature
C. Though popular hindi fiction was wide readh, it often does not appear in the movies
D. Protagonists in Hindi movies, being ideals for viewers, read only books of aspirational
value.
Answer : B
Solution :
People do not look up to writers of textbooks, English book or high value literature.
8
Civil Engineering
11.What is curl of the vector field 2x
2
yi + 5z
2
j - 4yzk?
A. - 14zi - 2x
2
k
B. 6zi + 4xj - 2x
2
k
C. 6zi + 8xyj + 2x
2
yk
D. -14zi + 6yj + 2x
2
k
Answer : A
Solution :
12.Analysis of a water sample revealed that the sample contains the following species.
9
Concentrations of which of the species will be required to compute alkalinity?
A.
B.
C.
D.
Answer : A
Solution :
H2CO3 and HCO3
-
never come together
13.The value of the function f(x) is given at n distinct values of x and its value is to be
interpolated at the point x
*
using all the n points. The estimate is obtained first by the
Lagrange polynomial, denoted by IL, and then by the Newton polynomial, denoted by IN.
Which one of the following statements is correct?
A. IL is always greater than IN
B. No definite relation exists between IL and IN.
C. IL is always less than IN
D. IL and IN are always equal
Answer : B
Solution :
Lagrange?s form is more efficient when you have to interpolate several data sets on the same
data point.
Newton?s form is more efficient when you have to interpolate data incrementally. So no
relationship between both.
14.If the fineness modulus of a sample of the fine aggregates is 4.3, the mean size of the
particles in the sample is between
10
A. 150 ?m and 300 ?m
B. 2.36 mm and 4.75 mm
C. 300 ?m and 600 ?m
D. 1.18 mm and 2.36 mm
Answer : D
Solution :
150 ?m, 300 ?m, 600 ?m, 1.18 mm,
2.36 mm, 4.75 mm, 10 mm, 20 mm,
40 mm, 80 mm
150 ? 1
300 ? 2
600 ? 3
4.75 - 6
15.The command area of a canal grows only one crop, i.e., wheat. The base period of wheat
is 120 days and its total water requirement, ?, is 40 cm. If the canal discharge is 2 m
3
/s, the
area, in hectares, rounded off to the nearest integer, which could be irrigated (neglecting all
losses) is ______________
Answer :
Solution :
B = 120 days
? = 0.4 m
and ? = 8.64B/D
? D = 2592 ha per (m
3
/s)
? For 2m
3
/sec water, area will be 5184 ha
11
16.The characteristic compressive strength of concrete required in a project is 25 MPa and
standard deviation in the observed compressive strength expected at site is 4 MPa. The
average compressive strength of cubes tested at different water-cement (w/c) ratios using the
same material as is used for the project is given in the table.
The water-cement ratio (in percent, round off to the lower integer) to be used in the mix
is________
Answer :
Solution :
fck = 25 ; ? = 4 MPa
fm = fck + 1.65? = 31.6 MPa
Using interpolation
= 46.7 (Rounded off to the lowest integer).
17.A solid sphere of radius, r, and made of material with density ?s, is moving through the
atmosphere (constant pressure, p) with a velocity, ?. The net force ONLY due to atmospheric
pressure (Fp) acting on the sphere at any time, t, is
A.
B. Zero
C. ?r
2
p
D. 4?r
2
p
Answer : B
Solution :
Force = area ? P
12
Net force will be zero as pressure acts from all sides.
18.An earthen dam of height H is made of cohesive soil whose cohesion and unit weight are c
and ?, respectively. If the factor of safety against cohesion is Fc, the Taylor?s stability
A.
B.
C.
D.
Answer : C
Solution :
Taylor?s stability number,
19.A closed thin walled tube has thickness, t, mean enclosed area within the boundary of the
centrline of tube?s thickness, Am, and shear stress ?. Torsional moment of resistance, T of the
section would be
A.
B.
13
C.
D.
Answer : A
Solution :
20.For a channel section subjected to a downward vertical shear force at its centroid, which
one of the following represents the correct distribution of shear stress in flange and web?
A.
B.
C.
14
D.
Answer : C
Solution :
Standard result
21.The degree of static indeterminancy of the plane frame is shown in the figure is ________
Answer :
Solution :
Ds = 3C ? R'
C = 6
Ds = (3 ? 6 ? 2) ? 1 (due to hinge)
= 15
15
22.Structural failures considered in the mechanistic method of bituminous pavement design
are
A. Shear and slippage
B. Fatique and Rutting
C. Fatique and shear
D. Rutting and shear
Answer : B
Solution :
As per IRC66:2012
23.Which one of the options contains ONLY primary air pollutants?
A. Ozone and peroxyacetyl nitrate
B. Nitrogen oxides and peroxyacetyl nitrate
C. Hydrocarbons and nitrogen oxides
D. Hydrocarbons and ozone
Answer : C
Solution :
Ozone and PAN are secondary air pollutants.
24.The following inequality is true for all x close to 0.
What is the value of
A. 2
B. 1/2
C. 0
16
D. 1
Answer : A
Solution :
It is form
L?s hospital rule (differentiate)
Putting 0 everywhere ? still form.
Differentiating numerator and denominator again,
25.The velocity field in a flow system is given by v = 2i + (x + y)j + (xyz)k. The acceleration
of the fluid at (1, 1, 2) is
A. j + k
B. 2i + 10 k
C. 4j + 10k
D. 4i + 12 k
Answer : C
Solution :
17
and
= 2 + (x + y) + (xyz)(0) + 0
and
= 2(yz) + (x + y)(xz) + (xyz)(xy) + 0
az = 2(1 ? 2) + (1 + 1)(1 ? 2) + (1 ? 1
? 2) (1?1)
= 10k
Therefore,
26.A steel column is restrained against both translation and rotation at one end and is
restrained only against rotation but free to translate at the other end. Theoretical and design
(IS: 800 ? 2007) values, respectively, of effective length factor of the column are
FirstRanker.com - FirstRanker's Choice
2
GATE CE 2019 Set 2: Questions & Solutions
General Aptitude
1.Daytime temperature in Delhi can ______ 40?C
A. Peak
B. reach
C. get
D. stand
Answer : B
Solution :
Daytime temperature in Delhi can reach 40?C
2.The growth rate of ABC Motors in 2017 was the same ________ XYZ Motors in 2016 .
A. As those of
B. As that off
C. As that of
D. As off
Answer : C
Solution :
The growth rate of ABC Motors in 2017 was the same as that of XYZ Motors in 2016.
3.Suresh wanted to lay a new carpet in his new mansion with an area of 70 55 sq. mts.
However an area of 550 sq. mts had to be left out for flower pots. If the cost of carpet is Rs.
50 per sq. mts, how much money (in Rs.) will be spent by Suresh for the carpet now?
A. Rs. 1,65,000
B. Rs. 1,92,500
C. Rs. 1,27,500
D. Rs. 2,75,000
Answer : A
3
Solution :
Area of mansion = 70 ? 55 = 3850 m
2
Area for flower pots = 550 m
2
? Area left for carpet = 3850 ? 550 = 3300m
2
? Cost = 3300 ? 50 = 165000
4.A retaining wall with measurements 30 m ? 12 m ? 6 m was constructed with bricks of
dimensions 8 cm ? 6 cm. If 60% of the wall consists of bricks used for the construction is
___________ lakhs.
A. 45
B. 30
C. 40
D. 75
Answer : A
Solution :
Volume of wall = 30 ? 12 ? 6 = 2160 m
3
= 2160 ? 106 cm
3
Total volume of bricks required = 2160 ? 106 ? 0.6 cm
3
= 1296 ? 106 cm
3
Volume of one brick = 8 ? 6 ? 6 = 288 cm
3
? No. of bricks required
= 4.5 ? 10
6
= 45 lakhs
5.Hima Das was _______ only Indian athlete to win _____________ gold for India.
A. the, many
B. an, the
C. an, a
4
D. the, a
Answer : D
Solution :
Hima Das was the only Indian athlete to win a gold for India.
6.Population of state X increased by x% and the population of state Y increased by y% from
2001 to 2011. Assume that x is greater than y. Let P be the ratio of the population of state X
to state Y in a given year. The percentage increase in P from 2001 to 2011 is_____________
A. x ? y
B.
C.
D.
Answer : C
Solution :
Let population of X is ?A? in 2001
and Population of Y is ?B? in 2001
? Population of A in 2011
& Population of B in 2011
Given,
5
% increase in P
7.The Newspaper report that over 500 hectares of tribal land spread across 28 tribal
settlements in Mohinitampuram forest division have already been ?alienated?. A top forest
official said, ?First the tribals are duped out of their land holdings. Second, the families thus
rendered landless are often forced to encroach further into the forests?.
On the basis of the information available in the paragraph, _______ is/are responsible for
duping the tribals.
A. The newspaper
B. Landless families
C. forest officials
D. it cannot be inferred who
Answer : D
Solution :
?it cannot be inferred who?
From given information, nobody can be held responsible.
8.An oil tank can be filled by pipe X in 5 hours and pipe Y in 4 hours, each pump working on
its own. When the oil tank is full and the drainage hole is open, the oil is drained in 20 hours.
6
If initially the tank was empty and someone started the two pumps together but left the
drainage hole open, how many hours will it tak for the tank to be filled? (Assume that the rate
of drainage is independent of the head)
A. 2.50
B. 1.50
C. 2.00
D. 4.00
Answer : A
Solution :
Pipe X will fill how much in one hour tank
Pipe Y will fill how much in one hour tank
Drainage will drain out how much water in 1 hour tank
? Total tank filled in one hour
tank gets filled in = 1 hour
? Full (i) tank gets filled in
9.Mohan, the manager, wants his four workers to work in pairs. No paper should work for
more than 5 hours. Ram and Johan have worked together for 5 hours. Krishna and Amir have
7
worked as a team for 2 hours. Krishan does not want to work with Ram whom should mohan
allot to work with Johan, if we wants all the workers to continue working?
A. Amir
B. Krishna
C. Ram
D. None of the three
Answer : B
Solution :
Conditions given:
(i) Ram & John have worked for 5 hours.
(ii) Krishna doesn?t want to work with Ram.
(iii) No pair should work beyond 5 hours.
Hence, Krishna should work with John to satisfy the above conditions.
10.?Popular Hindi fiction, despite ? or perhaps because of ? its wide reach, often does not
appear in our cinema. As ideals that viewers are meant to look up to rather than identify with,
Hindi film protagonisits usually read books of apsirational value: textbooks, English books,
or high value literature?.
Which one of the following CANNOT be inferred from the paragraph above?
A. Textbooks, English books or high literature have apsirational value, but not popular Hindi
fiction
B. People do not look up to writers of textbooks, English book or high value literature
C. Though popular hindi fiction was wide readh, it often does not appear in the movies
D. Protagonists in Hindi movies, being ideals for viewers, read only books of aspirational
value.
Answer : B
Solution :
People do not look up to writers of textbooks, English book or high value literature.
8
Civil Engineering
11.What is curl of the vector field 2x
2
yi + 5z
2
j - 4yzk?
A. - 14zi - 2x
2
k
B. 6zi + 4xj - 2x
2
k
C. 6zi + 8xyj + 2x
2
yk
D. -14zi + 6yj + 2x
2
k
Answer : A
Solution :
12.Analysis of a water sample revealed that the sample contains the following species.
9
Concentrations of which of the species will be required to compute alkalinity?
A.
B.
C.
D.
Answer : A
Solution :
H2CO3 and HCO3
-
never come together
13.The value of the function f(x) is given at n distinct values of x and its value is to be
interpolated at the point x
*
using all the n points. The estimate is obtained first by the
Lagrange polynomial, denoted by IL, and then by the Newton polynomial, denoted by IN.
Which one of the following statements is correct?
A. IL is always greater than IN
B. No definite relation exists between IL and IN.
C. IL is always less than IN
D. IL and IN are always equal
Answer : B
Solution :
Lagrange?s form is more efficient when you have to interpolate several data sets on the same
data point.
Newton?s form is more efficient when you have to interpolate data incrementally. So no
relationship between both.
14.If the fineness modulus of a sample of the fine aggregates is 4.3, the mean size of the
particles in the sample is between
10
A. 150 ?m and 300 ?m
B. 2.36 mm and 4.75 mm
C. 300 ?m and 600 ?m
D. 1.18 mm and 2.36 mm
Answer : D
Solution :
150 ?m, 300 ?m, 600 ?m, 1.18 mm,
2.36 mm, 4.75 mm, 10 mm, 20 mm,
40 mm, 80 mm
150 ? 1
300 ? 2
600 ? 3
4.75 - 6
15.The command area of a canal grows only one crop, i.e., wheat. The base period of wheat
is 120 days and its total water requirement, ?, is 40 cm. If the canal discharge is 2 m
3
/s, the
area, in hectares, rounded off to the nearest integer, which could be irrigated (neglecting all
losses) is ______________
Answer :
Solution :
B = 120 days
? = 0.4 m
and ? = 8.64B/D
? D = 2592 ha per (m
3
/s)
? For 2m
3
/sec water, area will be 5184 ha
11
16.The characteristic compressive strength of concrete required in a project is 25 MPa and
standard deviation in the observed compressive strength expected at site is 4 MPa. The
average compressive strength of cubes tested at different water-cement (w/c) ratios using the
same material as is used for the project is given in the table.
The water-cement ratio (in percent, round off to the lower integer) to be used in the mix
is________
Answer :
Solution :
fck = 25 ; ? = 4 MPa
fm = fck + 1.65? = 31.6 MPa
Using interpolation
= 46.7 (Rounded off to the lowest integer).
17.A solid sphere of radius, r, and made of material with density ?s, is moving through the
atmosphere (constant pressure, p) with a velocity, ?. The net force ONLY due to atmospheric
pressure (Fp) acting on the sphere at any time, t, is
A.
B. Zero
C. ?r
2
p
D. 4?r
2
p
Answer : B
Solution :
Force = area ? P
12
Net force will be zero as pressure acts from all sides.
18.An earthen dam of height H is made of cohesive soil whose cohesion and unit weight are c
and ?, respectively. If the factor of safety against cohesion is Fc, the Taylor?s stability
A.
B.
C.
D.
Answer : C
Solution :
Taylor?s stability number,
19.A closed thin walled tube has thickness, t, mean enclosed area within the boundary of the
centrline of tube?s thickness, Am, and shear stress ?. Torsional moment of resistance, T of the
section would be
A.
B.
13
C.
D.
Answer : A
Solution :
20.For a channel section subjected to a downward vertical shear force at its centroid, which
one of the following represents the correct distribution of shear stress in flange and web?
A.
B.
C.
14
D.
Answer : C
Solution :
Standard result
21.The degree of static indeterminancy of the plane frame is shown in the figure is ________
Answer :
Solution :
Ds = 3C ? R'
C = 6
Ds = (3 ? 6 ? 2) ? 1 (due to hinge)
= 15
15
22.Structural failures considered in the mechanistic method of bituminous pavement design
are
A. Shear and slippage
B. Fatique and Rutting
C. Fatique and shear
D. Rutting and shear
Answer : B
Solution :
As per IRC66:2012
23.Which one of the options contains ONLY primary air pollutants?
A. Ozone and peroxyacetyl nitrate
B. Nitrogen oxides and peroxyacetyl nitrate
C. Hydrocarbons and nitrogen oxides
D. Hydrocarbons and ozone
Answer : C
Solution :
Ozone and PAN are secondary air pollutants.
24.The following inequality is true for all x close to 0.
What is the value of
A. 2
B. 1/2
C. 0
16
D. 1
Answer : A
Solution :
It is form
L?s hospital rule (differentiate)
Putting 0 everywhere ? still form.
Differentiating numerator and denominator again,
25.The velocity field in a flow system is given by v = 2i + (x + y)j + (xyz)k. The acceleration
of the fluid at (1, 1, 2) is
A. j + k
B. 2i + 10 k
C. 4j + 10k
D. 4i + 12 k
Answer : C
Solution :
17
and
= 2 + (x + y) + (xyz)(0) + 0
and
= 2(yz) + (x + y)(xz) + (xyz)(xy) + 0
az = 2(1 ? 2) + (1 + 1)(1 ? 2) + (1 ? 1
? 2) (1?1)
= 10k
Therefore,
26.A steel column is restrained against both translation and rotation at one end and is
restrained only against rotation but free to translate at the other end. Theoretical and design
(IS: 800 ? 2007) values, respectively, of effective length factor of the column are
18
A. 1.0 and 1.0
B. 1.2 and 1.0
C. 1.2 and 1.2
D. 1.0 and 1.2
Answer : D
Solution :
As per IS:800-2007
27.Euclindean norm (length) of the vector [4 ?2 ? 6]
T
is
A. ?48
B. ?24
C. ?12
D. ?56
Answer : D
Solution :
The Euclidean norm assigns to each vector the length of its arrow. Because of this,
the Euclidean norm is often known as the magnitude. So,
Length
28.An inflow hydrograph is routed through a reservoir to produce an outflow hydrograph.
The peak flow of the inflow hydrograph is PI and the time of occurrence of the peak is tI. The
peak flow of the outflow hydrograph is P0 and the time of occurance of the peak is t0. Which
one of the following statements is correct?
A. PI < P0 and tI > t0
B. PI > P0 and tI > t0
C. PI < P0 and tI < t0
D. PI > P0 and tI < t0
Answer : D
Solution :
FirstRanker.com - FirstRanker's Choice
2
GATE CE 2019 Set 2: Questions & Solutions
General Aptitude
1.Daytime temperature in Delhi can ______ 40?C
A. Peak
B. reach
C. get
D. stand
Answer : B
Solution :
Daytime temperature in Delhi can reach 40?C
2.The growth rate of ABC Motors in 2017 was the same ________ XYZ Motors in 2016 .
A. As those of
B. As that off
C. As that of
D. As off
Answer : C
Solution :
The growth rate of ABC Motors in 2017 was the same as that of XYZ Motors in 2016.
3.Suresh wanted to lay a new carpet in his new mansion with an area of 70 55 sq. mts.
However an area of 550 sq. mts had to be left out for flower pots. If the cost of carpet is Rs.
50 per sq. mts, how much money (in Rs.) will be spent by Suresh for the carpet now?
A. Rs. 1,65,000
B. Rs. 1,92,500
C. Rs. 1,27,500
D. Rs. 2,75,000
Answer : A
3
Solution :
Area of mansion = 70 ? 55 = 3850 m
2
Area for flower pots = 550 m
2
? Area left for carpet = 3850 ? 550 = 3300m
2
? Cost = 3300 ? 50 = 165000
4.A retaining wall with measurements 30 m ? 12 m ? 6 m was constructed with bricks of
dimensions 8 cm ? 6 cm. If 60% of the wall consists of bricks used for the construction is
___________ lakhs.
A. 45
B. 30
C. 40
D. 75
Answer : A
Solution :
Volume of wall = 30 ? 12 ? 6 = 2160 m
3
= 2160 ? 106 cm
3
Total volume of bricks required = 2160 ? 106 ? 0.6 cm
3
= 1296 ? 106 cm
3
Volume of one brick = 8 ? 6 ? 6 = 288 cm
3
? No. of bricks required
= 4.5 ? 10
6
= 45 lakhs
5.Hima Das was _______ only Indian athlete to win _____________ gold for India.
A. the, many
B. an, the
C. an, a
4
D. the, a
Answer : D
Solution :
Hima Das was the only Indian athlete to win a gold for India.
6.Population of state X increased by x% and the population of state Y increased by y% from
2001 to 2011. Assume that x is greater than y. Let P be the ratio of the population of state X
to state Y in a given year. The percentage increase in P from 2001 to 2011 is_____________
A. x ? y
B.
C.
D.
Answer : C
Solution :
Let population of X is ?A? in 2001
and Population of Y is ?B? in 2001
? Population of A in 2011
& Population of B in 2011
Given,
5
% increase in P
7.The Newspaper report that over 500 hectares of tribal land spread across 28 tribal
settlements in Mohinitampuram forest division have already been ?alienated?. A top forest
official said, ?First the tribals are duped out of their land holdings. Second, the families thus
rendered landless are often forced to encroach further into the forests?.
On the basis of the information available in the paragraph, _______ is/are responsible for
duping the tribals.
A. The newspaper
B. Landless families
C. forest officials
D. it cannot be inferred who
Answer : D
Solution :
?it cannot be inferred who?
From given information, nobody can be held responsible.
8.An oil tank can be filled by pipe X in 5 hours and pipe Y in 4 hours, each pump working on
its own. When the oil tank is full and the drainage hole is open, the oil is drained in 20 hours.
6
If initially the tank was empty and someone started the two pumps together but left the
drainage hole open, how many hours will it tak for the tank to be filled? (Assume that the rate
of drainage is independent of the head)
A. 2.50
B. 1.50
C. 2.00
D. 4.00
Answer : A
Solution :
Pipe X will fill how much in one hour tank
Pipe Y will fill how much in one hour tank
Drainage will drain out how much water in 1 hour tank
? Total tank filled in one hour
tank gets filled in = 1 hour
? Full (i) tank gets filled in
9.Mohan, the manager, wants his four workers to work in pairs. No paper should work for
more than 5 hours. Ram and Johan have worked together for 5 hours. Krishna and Amir have
7
worked as a team for 2 hours. Krishan does not want to work with Ram whom should mohan
allot to work with Johan, if we wants all the workers to continue working?
A. Amir
B. Krishna
C. Ram
D. None of the three
Answer : B
Solution :
Conditions given:
(i) Ram & John have worked for 5 hours.
(ii) Krishna doesn?t want to work with Ram.
(iii) No pair should work beyond 5 hours.
Hence, Krishna should work with John to satisfy the above conditions.
10.?Popular Hindi fiction, despite ? or perhaps because of ? its wide reach, often does not
appear in our cinema. As ideals that viewers are meant to look up to rather than identify with,
Hindi film protagonisits usually read books of apsirational value: textbooks, English books,
or high value literature?.
Which one of the following CANNOT be inferred from the paragraph above?
A. Textbooks, English books or high literature have apsirational value, but not popular Hindi
fiction
B. People do not look up to writers of textbooks, English book or high value literature
C. Though popular hindi fiction was wide readh, it often does not appear in the movies
D. Protagonists in Hindi movies, being ideals for viewers, read only books of aspirational
value.
Answer : B
Solution :
People do not look up to writers of textbooks, English book or high value literature.
8
Civil Engineering
11.What is curl of the vector field 2x
2
yi + 5z
2
j - 4yzk?
A. - 14zi - 2x
2
k
B. 6zi + 4xj - 2x
2
k
C. 6zi + 8xyj + 2x
2
yk
D. -14zi + 6yj + 2x
2
k
Answer : A
Solution :
12.Analysis of a water sample revealed that the sample contains the following species.
9
Concentrations of which of the species will be required to compute alkalinity?
A.
B.
C.
D.
Answer : A
Solution :
H2CO3 and HCO3
-
never come together
13.The value of the function f(x) is given at n distinct values of x and its value is to be
interpolated at the point x
*
using all the n points. The estimate is obtained first by the
Lagrange polynomial, denoted by IL, and then by the Newton polynomial, denoted by IN.
Which one of the following statements is correct?
A. IL is always greater than IN
B. No definite relation exists between IL and IN.
C. IL is always less than IN
D. IL and IN are always equal
Answer : B
Solution :
Lagrange?s form is more efficient when you have to interpolate several data sets on the same
data point.
Newton?s form is more efficient when you have to interpolate data incrementally. So no
relationship between both.
14.If the fineness modulus of a sample of the fine aggregates is 4.3, the mean size of the
particles in the sample is between
10
A. 150 ?m and 300 ?m
B. 2.36 mm and 4.75 mm
C. 300 ?m and 600 ?m
D. 1.18 mm and 2.36 mm
Answer : D
Solution :
150 ?m, 300 ?m, 600 ?m, 1.18 mm,
2.36 mm, 4.75 mm, 10 mm, 20 mm,
40 mm, 80 mm
150 ? 1
300 ? 2
600 ? 3
4.75 - 6
15.The command area of a canal grows only one crop, i.e., wheat. The base period of wheat
is 120 days and its total water requirement, ?, is 40 cm. If the canal discharge is 2 m
3
/s, the
area, in hectares, rounded off to the nearest integer, which could be irrigated (neglecting all
losses) is ______________
Answer :
Solution :
B = 120 days
? = 0.4 m
and ? = 8.64B/D
? D = 2592 ha per (m
3
/s)
? For 2m
3
/sec water, area will be 5184 ha
11
16.The characteristic compressive strength of concrete required in a project is 25 MPa and
standard deviation in the observed compressive strength expected at site is 4 MPa. The
average compressive strength of cubes tested at different water-cement (w/c) ratios using the
same material as is used for the project is given in the table.
The water-cement ratio (in percent, round off to the lower integer) to be used in the mix
is________
Answer :
Solution :
fck = 25 ; ? = 4 MPa
fm = fck + 1.65? = 31.6 MPa
Using interpolation
= 46.7 (Rounded off to the lowest integer).
17.A solid sphere of radius, r, and made of material with density ?s, is moving through the
atmosphere (constant pressure, p) with a velocity, ?. The net force ONLY due to atmospheric
pressure (Fp) acting on the sphere at any time, t, is
A.
B. Zero
C. ?r
2
p
D. 4?r
2
p
Answer : B
Solution :
Force = area ? P
12
Net force will be zero as pressure acts from all sides.
18.An earthen dam of height H is made of cohesive soil whose cohesion and unit weight are c
and ?, respectively. If the factor of safety against cohesion is Fc, the Taylor?s stability
A.
B.
C.
D.
Answer : C
Solution :
Taylor?s stability number,
19.A closed thin walled tube has thickness, t, mean enclosed area within the boundary of the
centrline of tube?s thickness, Am, and shear stress ?. Torsional moment of resistance, T of the
section would be
A.
B.
13
C.
D.
Answer : A
Solution :
20.For a channel section subjected to a downward vertical shear force at its centroid, which
one of the following represents the correct distribution of shear stress in flange and web?
A.
B.
C.
14
D.
Answer : C
Solution :
Standard result
21.The degree of static indeterminancy of the plane frame is shown in the figure is ________
Answer :
Solution :
Ds = 3C ? R'
C = 6
Ds = (3 ? 6 ? 2) ? 1 (due to hinge)
= 15
15
22.Structural failures considered in the mechanistic method of bituminous pavement design
are
A. Shear and slippage
B. Fatique and Rutting
C. Fatique and shear
D. Rutting and shear
Answer : B
Solution :
As per IRC66:2012
23.Which one of the options contains ONLY primary air pollutants?
A. Ozone and peroxyacetyl nitrate
B. Nitrogen oxides and peroxyacetyl nitrate
C. Hydrocarbons and nitrogen oxides
D. Hydrocarbons and ozone
Answer : C
Solution :
Ozone and PAN are secondary air pollutants.
24.The following inequality is true for all x close to 0.
What is the value of
A. 2
B. 1/2
C. 0
16
D. 1
Answer : A
Solution :
It is form
L?s hospital rule (differentiate)
Putting 0 everywhere ? still form.
Differentiating numerator and denominator again,
25.The velocity field in a flow system is given by v = 2i + (x + y)j + (xyz)k. The acceleration
of the fluid at (1, 1, 2) is
A. j + k
B. 2i + 10 k
C. 4j + 10k
D. 4i + 12 k
Answer : C
Solution :
17
and
= 2 + (x + y) + (xyz)(0) + 0
and
= 2(yz) + (x + y)(xz) + (xyz)(xy) + 0
az = 2(1 ? 2) + (1 + 1)(1 ? 2) + (1 ? 1
? 2) (1?1)
= 10k
Therefore,
26.A steel column is restrained against both translation and rotation at one end and is
restrained only against rotation but free to translate at the other end. Theoretical and design
(IS: 800 ? 2007) values, respectively, of effective length factor of the column are
18
A. 1.0 and 1.0
B. 1.2 and 1.0
C. 1.2 and 1.2
D. 1.0 and 1.2
Answer : D
Solution :
As per IS:800-2007
27.Euclindean norm (length) of the vector [4 ?2 ? 6]
T
is
A. ?48
B. ?24
C. ?12
D. ?56
Answer : D
Solution :
The Euclidean norm assigns to each vector the length of its arrow. Because of this,
the Euclidean norm is often known as the magnitude. So,
Length
28.An inflow hydrograph is routed through a reservoir to produce an outflow hydrograph.
The peak flow of the inflow hydrograph is PI and the time of occurrence of the peak is tI. The
peak flow of the outflow hydrograph is P0 and the time of occurance of the peak is t0. Which
one of the following statements is correct?
A. PI < P0 and tI > t0
B. PI > P0 and tI > t0
C. PI < P0 and tI < t0
D. PI > P0 and tI < t0
Answer : D
Solution :
19
Pl > Po ; tl < to
29.Construction of a new building founded on a clayey soil was completed in January In
January 2014, the average consolidation settlement of the foundation in clay was recorded as
10 mm. The ultimate consolidation settlement was estimated in design as 40 mm.
Considering double drainage to occur at the clayey soil site, the expected consolidation
settlement in January 2019 (in mm, round off to the nearest integer) will be _____________
Answer :
Solution :
Ultimate consolidation = 40 mm
Recorded consolidation = 10 mm
? Total recorded consolidation
? 40 ? 0.375
FirstRanker.com - FirstRanker's Choice
2
GATE CE 2019 Set 2: Questions & Solutions
General Aptitude
1.Daytime temperature in Delhi can ______ 40?C
A. Peak
B. reach
C. get
D. stand
Answer : B
Solution :
Daytime temperature in Delhi can reach 40?C
2.The growth rate of ABC Motors in 2017 was the same ________ XYZ Motors in 2016 .
A. As those of
B. As that off
C. As that of
D. As off
Answer : C
Solution :
The growth rate of ABC Motors in 2017 was the same as that of XYZ Motors in 2016.
3.Suresh wanted to lay a new carpet in his new mansion with an area of 70 55 sq. mts.
However an area of 550 sq. mts had to be left out for flower pots. If the cost of carpet is Rs.
50 per sq. mts, how much money (in Rs.) will be spent by Suresh for the carpet now?
A. Rs. 1,65,000
B. Rs. 1,92,500
C. Rs. 1,27,500
D. Rs. 2,75,000
Answer : A
3
Solution :
Area of mansion = 70 ? 55 = 3850 m
2
Area for flower pots = 550 m
2
? Area left for carpet = 3850 ? 550 = 3300m
2
? Cost = 3300 ? 50 = 165000
4.A retaining wall with measurements 30 m ? 12 m ? 6 m was constructed with bricks of
dimensions 8 cm ? 6 cm. If 60% of the wall consists of bricks used for the construction is
___________ lakhs.
A. 45
B. 30
C. 40
D. 75
Answer : A
Solution :
Volume of wall = 30 ? 12 ? 6 = 2160 m
3
= 2160 ? 106 cm
3
Total volume of bricks required = 2160 ? 106 ? 0.6 cm
3
= 1296 ? 106 cm
3
Volume of one brick = 8 ? 6 ? 6 = 288 cm
3
? No. of bricks required
= 4.5 ? 10
6
= 45 lakhs
5.Hima Das was _______ only Indian athlete to win _____________ gold for India.
A. the, many
B. an, the
C. an, a
4
D. the, a
Answer : D
Solution :
Hima Das was the only Indian athlete to win a gold for India.
6.Population of state X increased by x% and the population of state Y increased by y% from
2001 to 2011. Assume that x is greater than y. Let P be the ratio of the population of state X
to state Y in a given year. The percentage increase in P from 2001 to 2011 is_____________
A. x ? y
B.
C.
D.
Answer : C
Solution :
Let population of X is ?A? in 2001
and Population of Y is ?B? in 2001
? Population of A in 2011
& Population of B in 2011
Given,
5
% increase in P
7.The Newspaper report that over 500 hectares of tribal land spread across 28 tribal
settlements in Mohinitampuram forest division have already been ?alienated?. A top forest
official said, ?First the tribals are duped out of their land holdings. Second, the families thus
rendered landless are often forced to encroach further into the forests?.
On the basis of the information available in the paragraph, _______ is/are responsible for
duping the tribals.
A. The newspaper
B. Landless families
C. forest officials
D. it cannot be inferred who
Answer : D
Solution :
?it cannot be inferred who?
From given information, nobody can be held responsible.
8.An oil tank can be filled by pipe X in 5 hours and pipe Y in 4 hours, each pump working on
its own. When the oil tank is full and the drainage hole is open, the oil is drained in 20 hours.
6
If initially the tank was empty and someone started the two pumps together but left the
drainage hole open, how many hours will it tak for the tank to be filled? (Assume that the rate
of drainage is independent of the head)
A. 2.50
B. 1.50
C. 2.00
D. 4.00
Answer : A
Solution :
Pipe X will fill how much in one hour tank
Pipe Y will fill how much in one hour tank
Drainage will drain out how much water in 1 hour tank
? Total tank filled in one hour
tank gets filled in = 1 hour
? Full (i) tank gets filled in
9.Mohan, the manager, wants his four workers to work in pairs. No paper should work for
more than 5 hours. Ram and Johan have worked together for 5 hours. Krishna and Amir have
7
worked as a team for 2 hours. Krishan does not want to work with Ram whom should mohan
allot to work with Johan, if we wants all the workers to continue working?
A. Amir
B. Krishna
C. Ram
D. None of the three
Answer : B
Solution :
Conditions given:
(i) Ram & John have worked for 5 hours.
(ii) Krishna doesn?t want to work with Ram.
(iii) No pair should work beyond 5 hours.
Hence, Krishna should work with John to satisfy the above conditions.
10.?Popular Hindi fiction, despite ? or perhaps because of ? its wide reach, often does not
appear in our cinema. As ideals that viewers are meant to look up to rather than identify with,
Hindi film protagonisits usually read books of apsirational value: textbooks, English books,
or high value literature?.
Which one of the following CANNOT be inferred from the paragraph above?
A. Textbooks, English books or high literature have apsirational value, but not popular Hindi
fiction
B. People do not look up to writers of textbooks, English book or high value literature
C. Though popular hindi fiction was wide readh, it often does not appear in the movies
D. Protagonists in Hindi movies, being ideals for viewers, read only books of aspirational
value.
Answer : B
Solution :
People do not look up to writers of textbooks, English book or high value literature.
8
Civil Engineering
11.What is curl of the vector field 2x
2
yi + 5z
2
j - 4yzk?
A. - 14zi - 2x
2
k
B. 6zi + 4xj - 2x
2
k
C. 6zi + 8xyj + 2x
2
yk
D. -14zi + 6yj + 2x
2
k
Answer : A
Solution :
12.Analysis of a water sample revealed that the sample contains the following species.
9
Concentrations of which of the species will be required to compute alkalinity?
A.
B.
C.
D.
Answer : A
Solution :
H2CO3 and HCO3
-
never come together
13.The value of the function f(x) is given at n distinct values of x and its value is to be
interpolated at the point x
*
using all the n points. The estimate is obtained first by the
Lagrange polynomial, denoted by IL, and then by the Newton polynomial, denoted by IN.
Which one of the following statements is correct?
A. IL is always greater than IN
B. No definite relation exists between IL and IN.
C. IL is always less than IN
D. IL and IN are always equal
Answer : B
Solution :
Lagrange?s form is more efficient when you have to interpolate several data sets on the same
data point.
Newton?s form is more efficient when you have to interpolate data incrementally. So no
relationship between both.
14.If the fineness modulus of a sample of the fine aggregates is 4.3, the mean size of the
particles in the sample is between
10
A. 150 ?m and 300 ?m
B. 2.36 mm and 4.75 mm
C. 300 ?m and 600 ?m
D. 1.18 mm and 2.36 mm
Answer : D
Solution :
150 ?m, 300 ?m, 600 ?m, 1.18 mm,
2.36 mm, 4.75 mm, 10 mm, 20 mm,
40 mm, 80 mm
150 ? 1
300 ? 2
600 ? 3
4.75 - 6
15.The command area of a canal grows only one crop, i.e., wheat. The base period of wheat
is 120 days and its total water requirement, ?, is 40 cm. If the canal discharge is 2 m
3
/s, the
area, in hectares, rounded off to the nearest integer, which could be irrigated (neglecting all
losses) is ______________
Answer :
Solution :
B = 120 days
? = 0.4 m
and ? = 8.64B/D
? D = 2592 ha per (m
3
/s)
? For 2m
3
/sec water, area will be 5184 ha
11
16.The characteristic compressive strength of concrete required in a project is 25 MPa and
standard deviation in the observed compressive strength expected at site is 4 MPa. The
average compressive strength of cubes tested at different water-cement (w/c) ratios using the
same material as is used for the project is given in the table.
The water-cement ratio (in percent, round off to the lower integer) to be used in the mix
is________
Answer :
Solution :
fck = 25 ; ? = 4 MPa
fm = fck + 1.65? = 31.6 MPa
Using interpolation
= 46.7 (Rounded off to the lowest integer).
17.A solid sphere of radius, r, and made of material with density ?s, is moving through the
atmosphere (constant pressure, p) with a velocity, ?. The net force ONLY due to atmospheric
pressure (Fp) acting on the sphere at any time, t, is
A.
B. Zero
C. ?r
2
p
D. 4?r
2
p
Answer : B
Solution :
Force = area ? P
12
Net force will be zero as pressure acts from all sides.
18.An earthen dam of height H is made of cohesive soil whose cohesion and unit weight are c
and ?, respectively. If the factor of safety against cohesion is Fc, the Taylor?s stability
A.
B.
C.
D.
Answer : C
Solution :
Taylor?s stability number,
19.A closed thin walled tube has thickness, t, mean enclosed area within the boundary of the
centrline of tube?s thickness, Am, and shear stress ?. Torsional moment of resistance, T of the
section would be
A.
B.
13
C.
D.
Answer : A
Solution :
20.For a channel section subjected to a downward vertical shear force at its centroid, which
one of the following represents the correct distribution of shear stress in flange and web?
A.
B.
C.
14
D.
Answer : C
Solution :
Standard result
21.The degree of static indeterminancy of the plane frame is shown in the figure is ________
Answer :
Solution :
Ds = 3C ? R'
C = 6
Ds = (3 ? 6 ? 2) ? 1 (due to hinge)
= 15
15
22.Structural failures considered in the mechanistic method of bituminous pavement design
are
A. Shear and slippage
B. Fatique and Rutting
C. Fatique and shear
D. Rutting and shear
Answer : B
Solution :
As per IRC66:2012
23.Which one of the options contains ONLY primary air pollutants?
A. Ozone and peroxyacetyl nitrate
B. Nitrogen oxides and peroxyacetyl nitrate
C. Hydrocarbons and nitrogen oxides
D. Hydrocarbons and ozone
Answer : C
Solution :
Ozone and PAN are secondary air pollutants.
24.The following inequality is true for all x close to 0.
What is the value of
A. 2
B. 1/2
C. 0
16
D. 1
Answer : A
Solution :
It is form
L?s hospital rule (differentiate)
Putting 0 everywhere ? still form.
Differentiating numerator and denominator again,
25.The velocity field in a flow system is given by v = 2i + (x + y)j + (xyz)k. The acceleration
of the fluid at (1, 1, 2) is
A. j + k
B. 2i + 10 k
C. 4j + 10k
D. 4i + 12 k
Answer : C
Solution :
17
and
= 2 + (x + y) + (xyz)(0) + 0
and
= 2(yz) + (x + y)(xz) + (xyz)(xy) + 0
az = 2(1 ? 2) + (1 + 1)(1 ? 2) + (1 ? 1
? 2) (1?1)
= 10k
Therefore,
26.A steel column is restrained against both translation and rotation at one end and is
restrained only against rotation but free to translate at the other end. Theoretical and design
(IS: 800 ? 2007) values, respectively, of effective length factor of the column are
18
A. 1.0 and 1.0
B. 1.2 and 1.0
C. 1.2 and 1.2
D. 1.0 and 1.2
Answer : D
Solution :
As per IS:800-2007
27.Euclindean norm (length) of the vector [4 ?2 ? 6]
T
is
A. ?48
B. ?24
C. ?12
D. ?56
Answer : D
Solution :
The Euclidean norm assigns to each vector the length of its arrow. Because of this,
the Euclidean norm is often known as the magnitude. So,
Length
28.An inflow hydrograph is routed through a reservoir to produce an outflow hydrograph.
The peak flow of the inflow hydrograph is PI and the time of occurrence of the peak is tI. The
peak flow of the outflow hydrograph is P0 and the time of occurance of the peak is t0. Which
one of the following statements is correct?
A. PI < P0 and tI > t0
B. PI > P0 and tI > t0
C. PI < P0 and tI < t0
D. PI > P0 and tI < t0
Answer : D
Solution :
19
Pl > Po ; tl < to
29.Construction of a new building founded on a clayey soil was completed in January In
January 2014, the average consolidation settlement of the foundation in clay was recorded as
10 mm. The ultimate consolidation settlement was estimated in design as 40 mm.
Considering double drainage to occur at the clayey soil site, the expected consolidation
settlement in January 2019 (in mm, round off to the nearest integer) will be _____________
Answer :
Solution :
Ultimate consolidation = 40 mm
Recorded consolidation = 10 mm
? Total recorded consolidation
? 40 ? 0.375
20
30.The notation ?SC? as per Indian standard Soil Classification System refers to
A. Clayey silt
B. Sandy clay
C. Calyey sand
D. Silty clay
Answer : C
Solution :
SC : clayey sand
31.The speed-density relationship in a mid-block section of a highway follows the
Greenshield?s model. If the free flow speed is vf and the jam density is kj, the maximum flow
observed on this ection is
A.
B.
C. fvkj
D.
Answer : D
Solution :
?(1)
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2
GATE CE 2019 Set 2: Questions & Solutions
General Aptitude
1.Daytime temperature in Delhi can ______ 40?C
A. Peak
B. reach
C. get
D. stand
Answer : B
Solution :
Daytime temperature in Delhi can reach 40?C
2.The growth rate of ABC Motors in 2017 was the same ________ XYZ Motors in 2016 .
A. As those of
B. As that off
C. As that of
D. As off
Answer : C
Solution :
The growth rate of ABC Motors in 2017 was the same as that of XYZ Motors in 2016.
3.Suresh wanted to lay a new carpet in his new mansion with an area of 70 55 sq. mts.
However an area of 550 sq. mts had to be left out for flower pots. If the cost of carpet is Rs.
50 per sq. mts, how much money (in Rs.) will be spent by Suresh for the carpet now?
A. Rs. 1,65,000
B. Rs. 1,92,500
C. Rs. 1,27,500
D. Rs. 2,75,000
Answer : A
3
Solution :
Area of mansion = 70 ? 55 = 3850 m
2
Area for flower pots = 550 m
2
? Area left for carpet = 3850 ? 550 = 3300m
2
? Cost = 3300 ? 50 = 165000
4.A retaining wall with measurements 30 m ? 12 m ? 6 m was constructed with bricks of
dimensions 8 cm ? 6 cm. If 60% of the wall consists of bricks used for the construction is
___________ lakhs.
A. 45
B. 30
C. 40
D. 75
Answer : A
Solution :
Volume of wall = 30 ? 12 ? 6 = 2160 m
3
= 2160 ? 106 cm
3
Total volume of bricks required = 2160 ? 106 ? 0.6 cm
3
= 1296 ? 106 cm
3
Volume of one brick = 8 ? 6 ? 6 = 288 cm
3
? No. of bricks required
= 4.5 ? 10
6
= 45 lakhs
5.Hima Das was _______ only Indian athlete to win _____________ gold for India.
A. the, many
B. an, the
C. an, a
4
D. the, a
Answer : D
Solution :
Hima Das was the only Indian athlete to win a gold for India.
6.Population of state X increased by x% and the population of state Y increased by y% from
2001 to 2011. Assume that x is greater than y. Let P be the ratio of the population of state X
to state Y in a given year. The percentage increase in P from 2001 to 2011 is_____________
A. x ? y
B.
C.
D.
Answer : C
Solution :
Let population of X is ?A? in 2001
and Population of Y is ?B? in 2001
? Population of A in 2011
& Population of B in 2011
Given,
5
% increase in P
7.The Newspaper report that over 500 hectares of tribal land spread across 28 tribal
settlements in Mohinitampuram forest division have already been ?alienated?. A top forest
official said, ?First the tribals are duped out of their land holdings. Second, the families thus
rendered landless are often forced to encroach further into the forests?.
On the basis of the information available in the paragraph, _______ is/are responsible for
duping the tribals.
A. The newspaper
B. Landless families
C. forest officials
D. it cannot be inferred who
Answer : D
Solution :
?it cannot be inferred who?
From given information, nobody can be held responsible.
8.An oil tank can be filled by pipe X in 5 hours and pipe Y in 4 hours, each pump working on
its own. When the oil tank is full and the drainage hole is open, the oil is drained in 20 hours.
6
If initially the tank was empty and someone started the two pumps together but left the
drainage hole open, how many hours will it tak for the tank to be filled? (Assume that the rate
of drainage is independent of the head)
A. 2.50
B. 1.50
C. 2.00
D. 4.00
Answer : A
Solution :
Pipe X will fill how much in one hour tank
Pipe Y will fill how much in one hour tank
Drainage will drain out how much water in 1 hour tank
? Total tank filled in one hour
tank gets filled in = 1 hour
? Full (i) tank gets filled in
9.Mohan, the manager, wants his four workers to work in pairs. No paper should work for
more than 5 hours. Ram and Johan have worked together for 5 hours. Krishna and Amir have
7
worked as a team for 2 hours. Krishan does not want to work with Ram whom should mohan
allot to work with Johan, if we wants all the workers to continue working?
A. Amir
B. Krishna
C. Ram
D. None of the three
Answer : B
Solution :
Conditions given:
(i) Ram & John have worked for 5 hours.
(ii) Krishna doesn?t want to work with Ram.
(iii) No pair should work beyond 5 hours.
Hence, Krishna should work with John to satisfy the above conditions.
10.?Popular Hindi fiction, despite ? or perhaps because of ? its wide reach, often does not
appear in our cinema. As ideals that viewers are meant to look up to rather than identify with,
Hindi film protagonisits usually read books of apsirational value: textbooks, English books,
or high value literature?.
Which one of the following CANNOT be inferred from the paragraph above?
A. Textbooks, English books or high literature have apsirational value, but not popular Hindi
fiction
B. People do not look up to writers of textbooks, English book or high value literature
C. Though popular hindi fiction was wide readh, it often does not appear in the movies
D. Protagonists in Hindi movies, being ideals for viewers, read only books of aspirational
value.
Answer : B
Solution :
People do not look up to writers of textbooks, English book or high value literature.
8
Civil Engineering
11.What is curl of the vector field 2x
2
yi + 5z
2
j - 4yzk?
A. - 14zi - 2x
2
k
B. 6zi + 4xj - 2x
2
k
C. 6zi + 8xyj + 2x
2
yk
D. -14zi + 6yj + 2x
2
k
Answer : A
Solution :
12.Analysis of a water sample revealed that the sample contains the following species.
9
Concentrations of which of the species will be required to compute alkalinity?
A.
B.
C.
D.
Answer : A
Solution :
H2CO3 and HCO3
-
never come together
13.The value of the function f(x) is given at n distinct values of x and its value is to be
interpolated at the point x
*
using all the n points. The estimate is obtained first by the
Lagrange polynomial, denoted by IL, and then by the Newton polynomial, denoted by IN.
Which one of the following statements is correct?
A. IL is always greater than IN
B. No definite relation exists between IL and IN.
C. IL is always less than IN
D. IL and IN are always equal
Answer : B
Solution :
Lagrange?s form is more efficient when you have to interpolate several data sets on the same
data point.
Newton?s form is more efficient when you have to interpolate data incrementally. So no
relationship between both.
14.If the fineness modulus of a sample of the fine aggregates is 4.3, the mean size of the
particles in the sample is between
10
A. 150 ?m and 300 ?m
B. 2.36 mm and 4.75 mm
C. 300 ?m and 600 ?m
D. 1.18 mm and 2.36 mm
Answer : D
Solution :
150 ?m, 300 ?m, 600 ?m, 1.18 mm,
2.36 mm, 4.75 mm, 10 mm, 20 mm,
40 mm, 80 mm
150 ? 1
300 ? 2
600 ? 3
4.75 - 6
15.The command area of a canal grows only one crop, i.e., wheat. The base period of wheat
is 120 days and its total water requirement, ?, is 40 cm. If the canal discharge is 2 m
3
/s, the
area, in hectares, rounded off to the nearest integer, which could be irrigated (neglecting all
losses) is ______________
Answer :
Solution :
B = 120 days
? = 0.4 m
and ? = 8.64B/D
? D = 2592 ha per (m
3
/s)
? For 2m
3
/sec water, area will be 5184 ha
11
16.The characteristic compressive strength of concrete required in a project is 25 MPa and
standard deviation in the observed compressive strength expected at site is 4 MPa. The
average compressive strength of cubes tested at different water-cement (w/c) ratios using the
same material as is used for the project is given in the table.
The water-cement ratio (in percent, round off to the lower integer) to be used in the mix
is________
Answer :
Solution :
fck = 25 ; ? = 4 MPa
fm = fck + 1.65? = 31.6 MPa
Using interpolation
= 46.7 (Rounded off to the lowest integer).
17.A solid sphere of radius, r, and made of material with density ?s, is moving through the
atmosphere (constant pressure, p) with a velocity, ?. The net force ONLY due to atmospheric
pressure (Fp) acting on the sphere at any time, t, is
A.
B. Zero
C. ?r
2
p
D. 4?r
2
p
Answer : B
Solution :
Force = area ? P
12
Net force will be zero as pressure acts from all sides.
18.An earthen dam of height H is made of cohesive soil whose cohesion and unit weight are c
and ?, respectively. If the factor of safety against cohesion is Fc, the Taylor?s stability
A.
B.
C.
D.
Answer : C
Solution :
Taylor?s stability number,
19.A closed thin walled tube has thickness, t, mean enclosed area within the boundary of the
centrline of tube?s thickness, Am, and shear stress ?. Torsional moment of resistance, T of the
section would be
A.
B.
13
C.
D.
Answer : A
Solution :
20.For a channel section subjected to a downward vertical shear force at its centroid, which
one of the following represents the correct distribution of shear stress in flange and web?
A.
B.
C.
14
D.
Answer : C
Solution :
Standard result
21.The degree of static indeterminancy of the plane frame is shown in the figure is ________
Answer :
Solution :
Ds = 3C ? R'
C = 6
Ds = (3 ? 6 ? 2) ? 1 (due to hinge)
= 15
15
22.Structural failures considered in the mechanistic method of bituminous pavement design
are
A. Shear and slippage
B. Fatique and Rutting
C. Fatique and shear
D. Rutting and shear
Answer : B
Solution :
As per IRC66:2012
23.Which one of the options contains ONLY primary air pollutants?
A. Ozone and peroxyacetyl nitrate
B. Nitrogen oxides and peroxyacetyl nitrate
C. Hydrocarbons and nitrogen oxides
D. Hydrocarbons and ozone
Answer : C
Solution :
Ozone and PAN are secondary air pollutants.
24.The following inequality is true for all x close to 0.
What is the value of
A. 2
B. 1/2
C. 0
16
D. 1
Answer : A
Solution :
It is form
L?s hospital rule (differentiate)
Putting 0 everywhere ? still form.
Differentiating numerator and denominator again,
25.The velocity field in a flow system is given by v = 2i + (x + y)j + (xyz)k. The acceleration
of the fluid at (1, 1, 2) is
A. j + k
B. 2i + 10 k
C. 4j + 10k
D. 4i + 12 k
Answer : C
Solution :
17
and
= 2 + (x + y) + (xyz)(0) + 0
and
= 2(yz) + (x + y)(xz) + (xyz)(xy) + 0
az = 2(1 ? 2) + (1 + 1)(1 ? 2) + (1 ? 1
? 2) (1?1)
= 10k
Therefore,
26.A steel column is restrained against both translation and rotation at one end and is
restrained only against rotation but free to translate at the other end. Theoretical and design
(IS: 800 ? 2007) values, respectively, of effective length factor of the column are
18
A. 1.0 and 1.0
B. 1.2 and 1.0
C. 1.2 and 1.2
D. 1.0 and 1.2
Answer : D
Solution :
As per IS:800-2007
27.Euclindean norm (length) of the vector [4 ?2 ? 6]
T
is
A. ?48
B. ?24
C. ?12
D. ?56
Answer : D
Solution :
The Euclidean norm assigns to each vector the length of its arrow. Because of this,
the Euclidean norm is often known as the magnitude. So,
Length
28.An inflow hydrograph is routed through a reservoir to produce an outflow hydrograph.
The peak flow of the inflow hydrograph is PI and the time of occurrence of the peak is tI. The
peak flow of the outflow hydrograph is P0 and the time of occurance of the peak is t0. Which
one of the following statements is correct?
A. PI < P0 and tI > t0
B. PI > P0 and tI > t0
C. PI < P0 and tI < t0
D. PI > P0 and tI < t0
Answer : D
Solution :
19
Pl > Po ; tl < to
29.Construction of a new building founded on a clayey soil was completed in January In
January 2014, the average consolidation settlement of the foundation in clay was recorded as
10 mm. The ultimate consolidation settlement was estimated in design as 40 mm.
Considering double drainage to occur at the clayey soil site, the expected consolidation
settlement in January 2019 (in mm, round off to the nearest integer) will be _____________
Answer :
Solution :
Ultimate consolidation = 40 mm
Recorded consolidation = 10 mm
? Total recorded consolidation
? 40 ? 0.375
20
30.The notation ?SC? as per Indian standard Soil Classification System refers to
A. Clayey silt
B. Sandy clay
C. Calyey sand
D. Silty clay
Answer : C
Solution :
SC : clayey sand
31.The speed-density relationship in a mid-block section of a highway follows the
Greenshield?s model. If the free flow speed is vf and the jam density is kj, the maximum flow
observed on this ection is
A.
B.
C. fvkj
D.
Answer : D
Solution :
?(1)
21
32.An anisotropic soil deposit has coefficient of permeability in vertical and horizontal
directions as kz and kx, respectively. For constructing a flow net, the horizontal dimension of
the problem?s geometry is transformed by a multiplying factor of
A.
B.
C.
D.
Answer : C
Solution :
Flow net for anisotropic soil.
?(i)
If we transformed geometry in x direction let x cordinate be transformed to the new
coordinate xt by the transformation.
FirstRanker.com - FirstRanker's Choice
2
GATE CE 2019 Set 2: Questions & Solutions
General Aptitude
1.Daytime temperature in Delhi can ______ 40?C
A. Peak
B. reach
C. get
D. stand
Answer : B
Solution :
Daytime temperature in Delhi can reach 40?C
2.The growth rate of ABC Motors in 2017 was the same ________ XYZ Motors in 2016 .
A. As those of
B. As that off
C. As that of
D. As off
Answer : C
Solution :
The growth rate of ABC Motors in 2017 was the same as that of XYZ Motors in 2016.
3.Suresh wanted to lay a new carpet in his new mansion with an area of 70 55 sq. mts.
However an area of 550 sq. mts had to be left out for flower pots. If the cost of carpet is Rs.
50 per sq. mts, how much money (in Rs.) will be spent by Suresh for the carpet now?
A. Rs. 1,65,000
B. Rs. 1,92,500
C. Rs. 1,27,500
D. Rs. 2,75,000
Answer : A
3
Solution :
Area of mansion = 70 ? 55 = 3850 m
2
Area for flower pots = 550 m
2
? Area left for carpet = 3850 ? 550 = 3300m
2
? Cost = 3300 ? 50 = 165000
4.A retaining wall with measurements 30 m ? 12 m ? 6 m was constructed with bricks of
dimensions 8 cm ? 6 cm. If 60% of the wall consists of bricks used for the construction is
___________ lakhs.
A. 45
B. 30
C. 40
D. 75
Answer : A
Solution :
Volume of wall = 30 ? 12 ? 6 = 2160 m
3
= 2160 ? 106 cm
3
Total volume of bricks required = 2160 ? 106 ? 0.6 cm
3
= 1296 ? 106 cm
3
Volume of one brick = 8 ? 6 ? 6 = 288 cm
3
? No. of bricks required
= 4.5 ? 10
6
= 45 lakhs
5.Hima Das was _______ only Indian athlete to win _____________ gold for India.
A. the, many
B. an, the
C. an, a
4
D. the, a
Answer : D
Solution :
Hima Das was the only Indian athlete to win a gold for India.
6.Population of state X increased by x% and the population of state Y increased by y% from
2001 to 2011. Assume that x is greater than y. Let P be the ratio of the population of state X
to state Y in a given year. The percentage increase in P from 2001 to 2011 is_____________
A. x ? y
B.
C.
D.
Answer : C
Solution :
Let population of X is ?A? in 2001
and Population of Y is ?B? in 2001
? Population of A in 2011
& Population of B in 2011
Given,
5
% increase in P
7.The Newspaper report that over 500 hectares of tribal land spread across 28 tribal
settlements in Mohinitampuram forest division have already been ?alienated?. A top forest
official said, ?First the tribals are duped out of their land holdings. Second, the families thus
rendered landless are often forced to encroach further into the forests?.
On the basis of the information available in the paragraph, _______ is/are responsible for
duping the tribals.
A. The newspaper
B. Landless families
C. forest officials
D. it cannot be inferred who
Answer : D
Solution :
?it cannot be inferred who?
From given information, nobody can be held responsible.
8.An oil tank can be filled by pipe X in 5 hours and pipe Y in 4 hours, each pump working on
its own. When the oil tank is full and the drainage hole is open, the oil is drained in 20 hours.
6
If initially the tank was empty and someone started the two pumps together but left the
drainage hole open, how many hours will it tak for the tank to be filled? (Assume that the rate
of drainage is independent of the head)
A. 2.50
B. 1.50
C. 2.00
D. 4.00
Answer : A
Solution :
Pipe X will fill how much in one hour tank
Pipe Y will fill how much in one hour tank
Drainage will drain out how much water in 1 hour tank
? Total tank filled in one hour
tank gets filled in = 1 hour
? Full (i) tank gets filled in
9.Mohan, the manager, wants his four workers to work in pairs. No paper should work for
more than 5 hours. Ram and Johan have worked together for 5 hours. Krishna and Amir have
7
worked as a team for 2 hours. Krishan does not want to work with Ram whom should mohan
allot to work with Johan, if we wants all the workers to continue working?
A. Amir
B. Krishna
C. Ram
D. None of the three
Answer : B
Solution :
Conditions given:
(i) Ram & John have worked for 5 hours.
(ii) Krishna doesn?t want to work with Ram.
(iii) No pair should work beyond 5 hours.
Hence, Krishna should work with John to satisfy the above conditions.
10.?Popular Hindi fiction, despite ? or perhaps because of ? its wide reach, often does not
appear in our cinema. As ideals that viewers are meant to look up to rather than identify with,
Hindi film protagonisits usually read books of apsirational value: textbooks, English books,
or high value literature?.
Which one of the following CANNOT be inferred from the paragraph above?
A. Textbooks, English books or high literature have apsirational value, but not popular Hindi
fiction
B. People do not look up to writers of textbooks, English book or high value literature
C. Though popular hindi fiction was wide readh, it often does not appear in the movies
D. Protagonists in Hindi movies, being ideals for viewers, read only books of aspirational
value.
Answer : B
Solution :
People do not look up to writers of textbooks, English book or high value literature.
8
Civil Engineering
11.What is curl of the vector field 2x
2
yi + 5z
2
j - 4yzk?
A. - 14zi - 2x
2
k
B. 6zi + 4xj - 2x
2
k
C. 6zi + 8xyj + 2x
2
yk
D. -14zi + 6yj + 2x
2
k
Answer : A
Solution :
12.Analysis of a water sample revealed that the sample contains the following species.
9
Concentrations of which of the species will be required to compute alkalinity?
A.
B.
C.
D.
Answer : A
Solution :
H2CO3 and HCO3
-
never come together
13.The value of the function f(x) is given at n distinct values of x and its value is to be
interpolated at the point x
*
using all the n points. The estimate is obtained first by the
Lagrange polynomial, denoted by IL, and then by the Newton polynomial, denoted by IN.
Which one of the following statements is correct?
A. IL is always greater than IN
B. No definite relation exists between IL and IN.
C. IL is always less than IN
D. IL and IN are always equal
Answer : B
Solution :
Lagrange?s form is more efficient when you have to interpolate several data sets on the same
data point.
Newton?s form is more efficient when you have to interpolate data incrementally. So no
relationship between both.
14.If the fineness modulus of a sample of the fine aggregates is 4.3, the mean size of the
particles in the sample is between
10
A. 150 ?m and 300 ?m
B. 2.36 mm and 4.75 mm
C. 300 ?m and 600 ?m
D. 1.18 mm and 2.36 mm
Answer : D
Solution :
150 ?m, 300 ?m, 600 ?m, 1.18 mm,
2.36 mm, 4.75 mm, 10 mm, 20 mm,
40 mm, 80 mm
150 ? 1
300 ? 2
600 ? 3
4.75 - 6
15.The command area of a canal grows only one crop, i.e., wheat. The base period of wheat
is 120 days and its total water requirement, ?, is 40 cm. If the canal discharge is 2 m
3
/s, the
area, in hectares, rounded off to the nearest integer, which could be irrigated (neglecting all
losses) is ______________
Answer :
Solution :
B = 120 days
? = 0.4 m
and ? = 8.64B/D
? D = 2592 ha per (m
3
/s)
? For 2m
3
/sec water, area will be 5184 ha
11
16.The characteristic compressive strength of concrete required in a project is 25 MPa and
standard deviation in the observed compressive strength expected at site is 4 MPa. The
average compressive strength of cubes tested at different water-cement (w/c) ratios using the
same material as is used for the project is given in the table.
The water-cement ratio (in percent, round off to the lower integer) to be used in the mix
is________
Answer :
Solution :
fck = 25 ; ? = 4 MPa
fm = fck + 1.65? = 31.6 MPa
Using interpolation
= 46.7 (Rounded off to the lowest integer).
17.A solid sphere of radius, r, and made of material with density ?s, is moving through the
atmosphere (constant pressure, p) with a velocity, ?. The net force ONLY due to atmospheric
pressure (Fp) acting on the sphere at any time, t, is
A.
B. Zero
C. ?r
2
p
D. 4?r
2
p
Answer : B
Solution :
Force = area ? P
12
Net force will be zero as pressure acts from all sides.
18.An earthen dam of height H is made of cohesive soil whose cohesion and unit weight are c
and ?, respectively. If the factor of safety against cohesion is Fc, the Taylor?s stability
A.
B.
C.
D.
Answer : C
Solution :
Taylor?s stability number,
19.A closed thin walled tube has thickness, t, mean enclosed area within the boundary of the
centrline of tube?s thickness, Am, and shear stress ?. Torsional moment of resistance, T of the
section would be
A.
B.
13
C.
D.
Answer : A
Solution :
20.For a channel section subjected to a downward vertical shear force at its centroid, which
one of the following represents the correct distribution of shear stress in flange and web?
A.
B.
C.
14
D.
Answer : C
Solution :
Standard result
21.The degree of static indeterminancy of the plane frame is shown in the figure is ________
Answer :
Solution :
Ds = 3C ? R'
C = 6
Ds = (3 ? 6 ? 2) ? 1 (due to hinge)
= 15
15
22.Structural failures considered in the mechanistic method of bituminous pavement design
are
A. Shear and slippage
B. Fatique and Rutting
C. Fatique and shear
D. Rutting and shear
Answer : B
Solution :
As per IRC66:2012
23.Which one of the options contains ONLY primary air pollutants?
A. Ozone and peroxyacetyl nitrate
B. Nitrogen oxides and peroxyacetyl nitrate
C. Hydrocarbons and nitrogen oxides
D. Hydrocarbons and ozone
Answer : C
Solution :
Ozone and PAN are secondary air pollutants.
24.The following inequality is true for all x close to 0.
What is the value of
A. 2
B. 1/2
C. 0
16
D. 1
Answer : A
Solution :
It is form
L?s hospital rule (differentiate)
Putting 0 everywhere ? still form.
Differentiating numerator and denominator again,
25.The velocity field in a flow system is given by v = 2i + (x + y)j + (xyz)k. The acceleration
of the fluid at (1, 1, 2) is
A. j + k
B. 2i + 10 k
C. 4j + 10k
D. 4i + 12 k
Answer : C
Solution :
17
and
= 2 + (x + y) + (xyz)(0) + 0
and
= 2(yz) + (x + y)(xz) + (xyz)(xy) + 0
az = 2(1 ? 2) + (1 + 1)(1 ? 2) + (1 ? 1
? 2) (1?1)
= 10k
Therefore,
26.A steel column is restrained against both translation and rotation at one end and is
restrained only against rotation but free to translate at the other end. Theoretical and design
(IS: 800 ? 2007) values, respectively, of effective length factor of the column are
18
A. 1.0 and 1.0
B. 1.2 and 1.0
C. 1.2 and 1.2
D. 1.0 and 1.2
Answer : D
Solution :
As per IS:800-2007
27.Euclindean norm (length) of the vector [4 ?2 ? 6]
T
is
A. ?48
B. ?24
C. ?12
D. ?56
Answer : D
Solution :
The Euclidean norm assigns to each vector the length of its arrow. Because of this,
the Euclidean norm is often known as the magnitude. So,
Length
28.An inflow hydrograph is routed through a reservoir to produce an outflow hydrograph.
The peak flow of the inflow hydrograph is PI and the time of occurrence of the peak is tI. The
peak flow of the outflow hydrograph is P0 and the time of occurance of the peak is t0. Which
one of the following statements is correct?
A. PI < P0 and tI > t0
B. PI > P0 and tI > t0
C. PI < P0 and tI < t0
D. PI > P0 and tI < t0
Answer : D
Solution :
19
Pl > Po ; tl < to
29.Construction of a new building founded on a clayey soil was completed in January In
January 2014, the average consolidation settlement of the foundation in clay was recorded as
10 mm. The ultimate consolidation settlement was estimated in design as 40 mm.
Considering double drainage to occur at the clayey soil site, the expected consolidation
settlement in January 2019 (in mm, round off to the nearest integer) will be _____________
Answer :
Solution :
Ultimate consolidation = 40 mm
Recorded consolidation = 10 mm
? Total recorded consolidation
? 40 ? 0.375
20
30.The notation ?SC? as per Indian standard Soil Classification System refers to
A. Clayey silt
B. Sandy clay
C. Calyey sand
D. Silty clay
Answer : C
Solution :
SC : clayey sand
31.The speed-density relationship in a mid-block section of a highway follows the
Greenshield?s model. If the free flow speed is vf and the jam density is kj, the maximum flow
observed on this ection is
A.
B.
C. fvkj
D.
Answer : D
Solution :
?(1)
21
32.An anisotropic soil deposit has coefficient of permeability in vertical and horizontal
directions as kz and kx, respectively. For constructing a flow net, the horizontal dimension of
the problem?s geometry is transformed by a multiplying factor of
A.
B.
C.
D.
Answer : C
Solution :
Flow net for anisotropic soil.
?(i)
If we transformed geometry in x direction let x cordinate be transformed to the new
coordinate xt by the transformation.
22
?(ii)
From eq. (i) & (ii),
Hence prove
So, multiplied factor
33.The Laplace transform of sinh (at) is
A.
B.
C.
D.
Answer : C
Solution :
Laplace transform of sinh (at) =
FirstRanker.com - FirstRanker's Choice
2
GATE CE 2019 Set 2: Questions & Solutions
General Aptitude
1.Daytime temperature in Delhi can ______ 40?C
A. Peak
B. reach
C. get
D. stand
Answer : B
Solution :
Daytime temperature in Delhi can reach 40?C
2.The growth rate of ABC Motors in 2017 was the same ________ XYZ Motors in 2016 .
A. As those of
B. As that off
C. As that of
D. As off
Answer : C
Solution :
The growth rate of ABC Motors in 2017 was the same as that of XYZ Motors in 2016.
3.Suresh wanted to lay a new carpet in his new mansion with an area of 70 55 sq. mts.
However an area of 550 sq. mts had to be left out for flower pots. If the cost of carpet is Rs.
50 per sq. mts, how much money (in Rs.) will be spent by Suresh for the carpet now?
A. Rs. 1,65,000
B. Rs. 1,92,500
C. Rs. 1,27,500
D. Rs. 2,75,000
Answer : A
3
Solution :
Area of mansion = 70 ? 55 = 3850 m
2
Area for flower pots = 550 m
2
? Area left for carpet = 3850 ? 550 = 3300m
2
? Cost = 3300 ? 50 = 165000
4.A retaining wall with measurements 30 m ? 12 m ? 6 m was constructed with bricks of
dimensions 8 cm ? 6 cm. If 60% of the wall consists of bricks used for the construction is
___________ lakhs.
A. 45
B. 30
C. 40
D. 75
Answer : A
Solution :
Volume of wall = 30 ? 12 ? 6 = 2160 m
3
= 2160 ? 106 cm
3
Total volume of bricks required = 2160 ? 106 ? 0.6 cm
3
= 1296 ? 106 cm
3
Volume of one brick = 8 ? 6 ? 6 = 288 cm
3
? No. of bricks required
= 4.5 ? 10
6
= 45 lakhs
5.Hima Das was _______ only Indian athlete to win _____________ gold for India.
A. the, many
B. an, the
C. an, a
4
D. the, a
Answer : D
Solution :
Hima Das was the only Indian athlete to win a gold for India.
6.Population of state X increased by x% and the population of state Y increased by y% from
2001 to 2011. Assume that x is greater than y. Let P be the ratio of the population of state X
to state Y in a given year. The percentage increase in P from 2001 to 2011 is_____________
A. x ? y
B.
C.
D.
Answer : C
Solution :
Let population of X is ?A? in 2001
and Population of Y is ?B? in 2001
? Population of A in 2011
& Population of B in 2011
Given,
5
% increase in P
7.The Newspaper report that over 500 hectares of tribal land spread across 28 tribal
settlements in Mohinitampuram forest division have already been ?alienated?. A top forest
official said, ?First the tribals are duped out of their land holdings. Second, the families thus
rendered landless are often forced to encroach further into the forests?.
On the basis of the information available in the paragraph, _______ is/are responsible for
duping the tribals.
A. The newspaper
B. Landless families
C. forest officials
D. it cannot be inferred who
Answer : D
Solution :
?it cannot be inferred who?
From given information, nobody can be held responsible.
8.An oil tank can be filled by pipe X in 5 hours and pipe Y in 4 hours, each pump working on
its own. When the oil tank is full and the drainage hole is open, the oil is drained in 20 hours.
6
If initially the tank was empty and someone started the two pumps together but left the
drainage hole open, how many hours will it tak for the tank to be filled? (Assume that the rate
of drainage is independent of the head)
A. 2.50
B. 1.50
C. 2.00
D. 4.00
Answer : A
Solution :
Pipe X will fill how much in one hour tank
Pipe Y will fill how much in one hour tank
Drainage will drain out how much water in 1 hour tank
? Total tank filled in one hour
tank gets filled in = 1 hour
? Full (i) tank gets filled in
9.Mohan, the manager, wants his four workers to work in pairs. No paper should work for
more than 5 hours. Ram and Johan have worked together for 5 hours. Krishna and Amir have
7
worked as a team for 2 hours. Krishan does not want to work with Ram whom should mohan
allot to work with Johan, if we wants all the workers to continue working?
A. Amir
B. Krishna
C. Ram
D. None of the three
Answer : B
Solution :
Conditions given:
(i) Ram & John have worked for 5 hours.
(ii) Krishna doesn?t want to work with Ram.
(iii) No pair should work beyond 5 hours.
Hence, Krishna should work with John to satisfy the above conditions.
10.?Popular Hindi fiction, despite ? or perhaps because of ? its wide reach, often does not
appear in our cinema. As ideals that viewers are meant to look up to rather than identify with,
Hindi film protagonisits usually read books of apsirational value: textbooks, English books,
or high value literature?.
Which one of the following CANNOT be inferred from the paragraph above?
A. Textbooks, English books or high literature have apsirational value, but not popular Hindi
fiction
B. People do not look up to writers of textbooks, English book or high value literature
C. Though popular hindi fiction was wide readh, it often does not appear in the movies
D. Protagonists in Hindi movies, being ideals for viewers, read only books of aspirational
value.
Answer : B
Solution :
People do not look up to writers of textbooks, English book or high value literature.
8
Civil Engineering
11.What is curl of the vector field 2x
2
yi + 5z
2
j - 4yzk?
A. - 14zi - 2x
2
k
B. 6zi + 4xj - 2x
2
k
C. 6zi + 8xyj + 2x
2
yk
D. -14zi + 6yj + 2x
2
k
Answer : A
Solution :
12.Analysis of a water sample revealed that the sample contains the following species.
9
Concentrations of which of the species will be required to compute alkalinity?
A.
B.
C.
D.
Answer : A
Solution :
H2CO3 and HCO3
-
never come together
13.The value of the function f(x) is given at n distinct values of x and its value is to be
interpolated at the point x
*
using all the n points. The estimate is obtained first by the
Lagrange polynomial, denoted by IL, and then by the Newton polynomial, denoted by IN.
Which one of the following statements is correct?
A. IL is always greater than IN
B. No definite relation exists between IL and IN.
C. IL is always less than IN
D. IL and IN are always equal
Answer : B
Solution :
Lagrange?s form is more efficient when you have to interpolate several data sets on the same
data point.
Newton?s form is more efficient when you have to interpolate data incrementally. So no
relationship between both.
14.If the fineness modulus of a sample of the fine aggregates is 4.3, the mean size of the
particles in the sample is between
10
A. 150 ?m and 300 ?m
B. 2.36 mm and 4.75 mm
C. 300 ?m and 600 ?m
D. 1.18 mm and 2.36 mm
Answer : D
Solution :
150 ?m, 300 ?m, 600 ?m, 1.18 mm,
2.36 mm, 4.75 mm, 10 mm, 20 mm,
40 mm, 80 mm
150 ? 1
300 ? 2
600 ? 3
4.75 - 6
15.The command area of a canal grows only one crop, i.e., wheat. The base period of wheat
is 120 days and its total water requirement, ?, is 40 cm. If the canal discharge is 2 m
3
/s, the
area, in hectares, rounded off to the nearest integer, which could be irrigated (neglecting all
losses) is ______________
Answer :
Solution :
B = 120 days
? = 0.4 m
and ? = 8.64B/D
? D = 2592 ha per (m
3
/s)
? For 2m
3
/sec water, area will be 5184 ha
11
16.The characteristic compressive strength of concrete required in a project is 25 MPa and
standard deviation in the observed compressive strength expected at site is 4 MPa. The
average compressive strength of cubes tested at different water-cement (w/c) ratios using the
same material as is used for the project is given in the table.
The water-cement ratio (in percent, round off to the lower integer) to be used in the mix
is________
Answer :
Solution :
fck = 25 ; ? = 4 MPa
fm = fck + 1.65? = 31.6 MPa
Using interpolation
= 46.7 (Rounded off to the lowest integer).
17.A solid sphere of radius, r, and made of material with density ?s, is moving through the
atmosphere (constant pressure, p) with a velocity, ?. The net force ONLY due to atmospheric
pressure (Fp) acting on the sphere at any time, t, is
A.
B. Zero
C. ?r
2
p
D. 4?r
2
p
Answer : B
Solution :
Force = area ? P
12
Net force will be zero as pressure acts from all sides.
18.An earthen dam of height H is made of cohesive soil whose cohesion and unit weight are c
and ?, respectively. If the factor of safety against cohesion is Fc, the Taylor?s stability
A.
B.
C.
D.
Answer : C
Solution :
Taylor?s stability number,
19.A closed thin walled tube has thickness, t, mean enclosed area within the boundary of the
centrline of tube?s thickness, Am, and shear stress ?. Torsional moment of resistance, T of the
section would be
A.
B.
13
C.
D.
Answer : A
Solution :
20.For a channel section subjected to a downward vertical shear force at its centroid, which
one of the following represents the correct distribution of shear stress in flange and web?
A.
B.
C.
14
D.
Answer : C
Solution :
Standard result
21.The degree of static indeterminancy of the plane frame is shown in the figure is ________
Answer :
Solution :
Ds = 3C ? R'
C = 6
Ds = (3 ? 6 ? 2) ? 1 (due to hinge)
= 15
15
22.Structural failures considered in the mechanistic method of bituminous pavement design
are
A. Shear and slippage
B. Fatique and Rutting
C. Fatique and shear
D. Rutting and shear
Answer : B
Solution :
As per IRC66:2012
23.Which one of the options contains ONLY primary air pollutants?
A. Ozone and peroxyacetyl nitrate
B. Nitrogen oxides and peroxyacetyl nitrate
C. Hydrocarbons and nitrogen oxides
D. Hydrocarbons and ozone
Answer : C
Solution :
Ozone and PAN are secondary air pollutants.
24.The following inequality is true for all x close to 0.
What is the value of
A. 2
B. 1/2
C. 0
16
D. 1
Answer : A
Solution :
It is form
L?s hospital rule (differentiate)
Putting 0 everywhere ? still form.
Differentiating numerator and denominator again,
25.The velocity field in a flow system is given by v = 2i + (x + y)j + (xyz)k. The acceleration
of the fluid at (1, 1, 2) is
A. j + k
B. 2i + 10 k
C. 4j + 10k
D. 4i + 12 k
Answer : C
Solution :
17
and
= 2 + (x + y) + (xyz)(0) + 0
and
= 2(yz) + (x + y)(xz) + (xyz)(xy) + 0
az = 2(1 ? 2) + (1 + 1)(1 ? 2) + (1 ? 1
? 2) (1?1)
= 10k
Therefore,
26.A steel column is restrained against both translation and rotation at one end and is
restrained only against rotation but free to translate at the other end. Theoretical and design
(IS: 800 ? 2007) values, respectively, of effective length factor of the column are
18
A. 1.0 and 1.0
B. 1.2 and 1.0
C. 1.2 and 1.2
D. 1.0 and 1.2
Answer : D
Solution :
As per IS:800-2007
27.Euclindean norm (length) of the vector [4 ?2 ? 6]
T
is
A. ?48
B. ?24
C. ?12
D. ?56
Answer : D
Solution :
The Euclidean norm assigns to each vector the length of its arrow. Because of this,
the Euclidean norm is often known as the magnitude. So,
Length
28.An inflow hydrograph is routed through a reservoir to produce an outflow hydrograph.
The peak flow of the inflow hydrograph is PI and the time of occurrence of the peak is tI. The
peak flow of the outflow hydrograph is P0 and the time of occurance of the peak is t0. Which
one of the following statements is correct?
A. PI < P0 and tI > t0
B. PI > P0 and tI > t0
C. PI < P0 and tI < t0
D. PI > P0 and tI < t0
Answer : D
Solution :
19
Pl > Po ; tl < to
29.Construction of a new building founded on a clayey soil was completed in January In
January 2014, the average consolidation settlement of the foundation in clay was recorded as
10 mm. The ultimate consolidation settlement was estimated in design as 40 mm.
Considering double drainage to occur at the clayey soil site, the expected consolidation
settlement in January 2019 (in mm, round off to the nearest integer) will be _____________
Answer :
Solution :
Ultimate consolidation = 40 mm
Recorded consolidation = 10 mm
? Total recorded consolidation
? 40 ? 0.375
20
30.The notation ?SC? as per Indian standard Soil Classification System refers to
A. Clayey silt
B. Sandy clay
C. Calyey sand
D. Silty clay
Answer : C
Solution :
SC : clayey sand
31.The speed-density relationship in a mid-block section of a highway follows the
Greenshield?s model. If the free flow speed is vf and the jam density is kj, the maximum flow
observed on this ection is
A.
B.
C. fvkj
D.
Answer : D
Solution :
?(1)
21
32.An anisotropic soil deposit has coefficient of permeability in vertical and horizontal
directions as kz and kx, respectively. For constructing a flow net, the horizontal dimension of
the problem?s geometry is transformed by a multiplying factor of
A.
B.
C.
D.
Answer : C
Solution :
Flow net for anisotropic soil.
?(i)
If we transformed geometry in x direction let x cordinate be transformed to the new
coordinate xt by the transformation.
22
?(ii)
From eq. (i) & (ii),
Hence prove
So, multiplied factor
33.The Laplace transform of sinh (at) is
A.
B.
C.
D.
Answer : C
Solution :
Laplace transform of sinh (at) =
23
34.The data from a closed traverse survey PQRS (run in the clockwise direction) are given in
the table
The closing error for the traverse PQRS (in degrees) is________
Answer :
Solution :
n = 4 (number of sides of closed traverse)
(2n ? 4) ? 90? = 360?
so, error in included angle
= (88 + 92 + 94 + 89) ? 360 = +3?
35.A vehicle is moving on a road of grade +4% at a speed of 20 m/s. Consider the coefficient
of rolling friction as 0.46 and acceleration due to gravity as 10 m/s
2
. On applying brakes to
reach a speed of 10 m/s, the required braking distance (in m, round off to nearest integer)
along the horizontal, is ______.
Answer :
Solution :
Given: grade = +4%
V1 = 20 m/sec.
f = 0.46
g = 10 m/sec.
V1 = 10 m/sec.
FirstRanker.com - FirstRanker's Choice
2
GATE CE 2019 Set 2: Questions & Solutions
General Aptitude
1.Daytime temperature in Delhi can ______ 40?C
A. Peak
B. reach
C. get
D. stand
Answer : B
Solution :
Daytime temperature in Delhi can reach 40?C
2.The growth rate of ABC Motors in 2017 was the same ________ XYZ Motors in 2016 .
A. As those of
B. As that off
C. As that of
D. As off
Answer : C
Solution :
The growth rate of ABC Motors in 2017 was the same as that of XYZ Motors in 2016.
3.Suresh wanted to lay a new carpet in his new mansion with an area of 70 55 sq. mts.
However an area of 550 sq. mts had to be left out for flower pots. If the cost of carpet is Rs.
50 per sq. mts, how much money (in Rs.) will be spent by Suresh for the carpet now?
A. Rs. 1,65,000
B. Rs. 1,92,500
C. Rs. 1,27,500
D. Rs. 2,75,000
Answer : A
3
Solution :
Area of mansion = 70 ? 55 = 3850 m
2
Area for flower pots = 550 m
2
? Area left for carpet = 3850 ? 550 = 3300m
2
? Cost = 3300 ? 50 = 165000
4.A retaining wall with measurements 30 m ? 12 m ? 6 m was constructed with bricks of
dimensions 8 cm ? 6 cm. If 60% of the wall consists of bricks used for the construction is
___________ lakhs.
A. 45
B. 30
C. 40
D. 75
Answer : A
Solution :
Volume of wall = 30 ? 12 ? 6 = 2160 m
3
= 2160 ? 106 cm
3
Total volume of bricks required = 2160 ? 106 ? 0.6 cm
3
= 1296 ? 106 cm
3
Volume of one brick = 8 ? 6 ? 6 = 288 cm
3
? No. of bricks required
= 4.5 ? 10
6
= 45 lakhs
5.Hima Das was _______ only Indian athlete to win _____________ gold for India.
A. the, many
B. an, the
C. an, a
4
D. the, a
Answer : D
Solution :
Hima Das was the only Indian athlete to win a gold for India.
6.Population of state X increased by x% and the population of state Y increased by y% from
2001 to 2011. Assume that x is greater than y. Let P be the ratio of the population of state X
to state Y in a given year. The percentage increase in P from 2001 to 2011 is_____________
A. x ? y
B.
C.
D.
Answer : C
Solution :
Let population of X is ?A? in 2001
and Population of Y is ?B? in 2001
? Population of A in 2011
& Population of B in 2011
Given,
5
% increase in P
7.The Newspaper report that over 500 hectares of tribal land spread across 28 tribal
settlements in Mohinitampuram forest division have already been ?alienated?. A top forest
official said, ?First the tribals are duped out of their land holdings. Second, the families thus
rendered landless are often forced to encroach further into the forests?.
On the basis of the information available in the paragraph, _______ is/are responsible for
duping the tribals.
A. The newspaper
B. Landless families
C. forest officials
D. it cannot be inferred who
Answer : D
Solution :
?it cannot be inferred who?
From given information, nobody can be held responsible.
8.An oil tank can be filled by pipe X in 5 hours and pipe Y in 4 hours, each pump working on
its own. When the oil tank is full and the drainage hole is open, the oil is drained in 20 hours.
6
If initially the tank was empty and someone started the two pumps together but left the
drainage hole open, how many hours will it tak for the tank to be filled? (Assume that the rate
of drainage is independent of the head)
A. 2.50
B. 1.50
C. 2.00
D. 4.00
Answer : A
Solution :
Pipe X will fill how much in one hour tank
Pipe Y will fill how much in one hour tank
Drainage will drain out how much water in 1 hour tank
? Total tank filled in one hour
tank gets filled in = 1 hour
? Full (i) tank gets filled in
9.Mohan, the manager, wants his four workers to work in pairs. No paper should work for
more than 5 hours. Ram and Johan have worked together for 5 hours. Krishna and Amir have
7
worked as a team for 2 hours. Krishan does not want to work with Ram whom should mohan
allot to work with Johan, if we wants all the workers to continue working?
A. Amir
B. Krishna
C. Ram
D. None of the three
Answer : B
Solution :
Conditions given:
(i) Ram & John have worked for 5 hours.
(ii) Krishna doesn?t want to work with Ram.
(iii) No pair should work beyond 5 hours.
Hence, Krishna should work with John to satisfy the above conditions.
10.?Popular Hindi fiction, despite ? or perhaps because of ? its wide reach, often does not
appear in our cinema. As ideals that viewers are meant to look up to rather than identify with,
Hindi film protagonisits usually read books of apsirational value: textbooks, English books,
or high value literature?.
Which one of the following CANNOT be inferred from the paragraph above?
A. Textbooks, English books or high literature have apsirational value, but not popular Hindi
fiction
B. People do not look up to writers of textbooks, English book or high value literature
C. Though popular hindi fiction was wide readh, it often does not appear in the movies
D. Protagonists in Hindi movies, being ideals for viewers, read only books of aspirational
value.
Answer : B
Solution :
People do not look up to writers of textbooks, English book or high value literature.
8
Civil Engineering
11.What is curl of the vector field 2x
2
yi + 5z
2
j - 4yzk?
A. - 14zi - 2x
2
k
B. 6zi + 4xj - 2x
2
k
C. 6zi + 8xyj + 2x
2
yk
D. -14zi + 6yj + 2x
2
k
Answer : A
Solution :
12.Analysis of a water sample revealed that the sample contains the following species.
9
Concentrations of which of the species will be required to compute alkalinity?
A.
B.
C.
D.
Answer : A
Solution :
H2CO3 and HCO3
-
never come together
13.The value of the function f(x) is given at n distinct values of x and its value is to be
interpolated at the point x
*
using all the n points. The estimate is obtained first by the
Lagrange polynomial, denoted by IL, and then by the Newton polynomial, denoted by IN.
Which one of the following statements is correct?
A. IL is always greater than IN
B. No definite relation exists between IL and IN.
C. IL is always less than IN
D. IL and IN are always equal
Answer : B
Solution :
Lagrange?s form is more efficient when you have to interpolate several data sets on the same
data point.
Newton?s form is more efficient when you have to interpolate data incrementally. So no
relationship between both.
14.If the fineness modulus of a sample of the fine aggregates is 4.3, the mean size of the
particles in the sample is between
10
A. 150 ?m and 300 ?m
B. 2.36 mm and 4.75 mm
C. 300 ?m and 600 ?m
D. 1.18 mm and 2.36 mm
Answer : D
Solution :
150 ?m, 300 ?m, 600 ?m, 1.18 mm,
2.36 mm, 4.75 mm, 10 mm, 20 mm,
40 mm, 80 mm
150 ? 1
300 ? 2
600 ? 3
4.75 - 6
15.The command area of a canal grows only one crop, i.e., wheat. The base period of wheat
is 120 days and its total water requirement, ?, is 40 cm. If the canal discharge is 2 m
3
/s, the
area, in hectares, rounded off to the nearest integer, which could be irrigated (neglecting all
losses) is ______________
Answer :
Solution :
B = 120 days
? = 0.4 m
and ? = 8.64B/D
? D = 2592 ha per (m
3
/s)
? For 2m
3
/sec water, area will be 5184 ha
11
16.The characteristic compressive strength of concrete required in a project is 25 MPa and
standard deviation in the observed compressive strength expected at site is 4 MPa. The
average compressive strength of cubes tested at different water-cement (w/c) ratios using the
same material as is used for the project is given in the table.
The water-cement ratio (in percent, round off to the lower integer) to be used in the mix
is________
Answer :
Solution :
fck = 25 ; ? = 4 MPa
fm = fck + 1.65? = 31.6 MPa
Using interpolation
= 46.7 (Rounded off to the lowest integer).
17.A solid sphere of radius, r, and made of material with density ?s, is moving through the
atmosphere (constant pressure, p) with a velocity, ?. The net force ONLY due to atmospheric
pressure (Fp) acting on the sphere at any time, t, is
A.
B. Zero
C. ?r
2
p
D. 4?r
2
p
Answer : B
Solution :
Force = area ? P
12
Net force will be zero as pressure acts from all sides.
18.An earthen dam of height H is made of cohesive soil whose cohesion and unit weight are c
and ?, respectively. If the factor of safety against cohesion is Fc, the Taylor?s stability
A.
B.
C.
D.
Answer : C
Solution :
Taylor?s stability number,
19.A closed thin walled tube has thickness, t, mean enclosed area within the boundary of the
centrline of tube?s thickness, Am, and shear stress ?. Torsional moment of resistance, T of the
section would be
A.
B.
13
C.
D.
Answer : A
Solution :
20.For a channel section subjected to a downward vertical shear force at its centroid, which
one of the following represents the correct distribution of shear stress in flange and web?
A.
B.
C.
14
D.
Answer : C
Solution :
Standard result
21.The degree of static indeterminancy of the plane frame is shown in the figure is ________
Answer :
Solution :
Ds = 3C ? R'
C = 6
Ds = (3 ? 6 ? 2) ? 1 (due to hinge)
= 15
15
22.Structural failures considered in the mechanistic method of bituminous pavement design
are
A. Shear and slippage
B. Fatique and Rutting
C. Fatique and shear
D. Rutting and shear
Answer : B
Solution :
As per IRC66:2012
23.Which one of the options contains ONLY primary air pollutants?
A. Ozone and peroxyacetyl nitrate
B. Nitrogen oxides and peroxyacetyl nitrate
C. Hydrocarbons and nitrogen oxides
D. Hydrocarbons and ozone
Answer : C
Solution :
Ozone and PAN are secondary air pollutants.
24.The following inequality is true for all x close to 0.
What is the value of
A. 2
B. 1/2
C. 0
16
D. 1
Answer : A
Solution :
It is form
L?s hospital rule (differentiate)
Putting 0 everywhere ? still form.
Differentiating numerator and denominator again,
25.The velocity field in a flow system is given by v = 2i + (x + y)j + (xyz)k. The acceleration
of the fluid at (1, 1, 2) is
A. j + k
B. 2i + 10 k
C. 4j + 10k
D. 4i + 12 k
Answer : C
Solution :
17
and
= 2 + (x + y) + (xyz)(0) + 0
and
= 2(yz) + (x + y)(xz) + (xyz)(xy) + 0
az = 2(1 ? 2) + (1 + 1)(1 ? 2) + (1 ? 1
? 2) (1?1)
= 10k
Therefore,
26.A steel column is restrained against both translation and rotation at one end and is
restrained only against rotation but free to translate at the other end. Theoretical and design
(IS: 800 ? 2007) values, respectively, of effective length factor of the column are
18
A. 1.0 and 1.0
B. 1.2 and 1.0
C. 1.2 and 1.2
D. 1.0 and 1.2
Answer : D
Solution :
As per IS:800-2007
27.Euclindean norm (length) of the vector [4 ?2 ? 6]
T
is
A. ?48
B. ?24
C. ?12
D. ?56
Answer : D
Solution :
The Euclidean norm assigns to each vector the length of its arrow. Because of this,
the Euclidean norm is often known as the magnitude. So,
Length
28.An inflow hydrograph is routed through a reservoir to produce an outflow hydrograph.
The peak flow of the inflow hydrograph is PI and the time of occurrence of the peak is tI. The
peak flow of the outflow hydrograph is P0 and the time of occurance of the peak is t0. Which
one of the following statements is correct?
A. PI < P0 and tI > t0
B. PI > P0 and tI > t0
C. PI < P0 and tI < t0
D. PI > P0 and tI < t0
Answer : D
Solution :
19
Pl > Po ; tl < to
29.Construction of a new building founded on a clayey soil was completed in January In
January 2014, the average consolidation settlement of the foundation in clay was recorded as
10 mm. The ultimate consolidation settlement was estimated in design as 40 mm.
Considering double drainage to occur at the clayey soil site, the expected consolidation
settlement in January 2019 (in mm, round off to the nearest integer) will be _____________
Answer :
Solution :
Ultimate consolidation = 40 mm
Recorded consolidation = 10 mm
? Total recorded consolidation
? 40 ? 0.375
20
30.The notation ?SC? as per Indian standard Soil Classification System refers to
A. Clayey silt
B. Sandy clay
C. Calyey sand
D. Silty clay
Answer : C
Solution :
SC : clayey sand
31.The speed-density relationship in a mid-block section of a highway follows the
Greenshield?s model. If the free flow speed is vf and the jam density is kj, the maximum flow
observed on this ection is
A.
B.
C. fvkj
D.
Answer : D
Solution :
?(1)
21
32.An anisotropic soil deposit has coefficient of permeability in vertical and horizontal
directions as kz and kx, respectively. For constructing a flow net, the horizontal dimension of
the problem?s geometry is transformed by a multiplying factor of
A.
B.
C.
D.
Answer : C
Solution :
Flow net for anisotropic soil.
?(i)
If we transformed geometry in x direction let x cordinate be transformed to the new
coordinate xt by the transformation.
22
?(ii)
From eq. (i) & (ii),
Hence prove
So, multiplied factor
33.The Laplace transform of sinh (at) is
A.
B.
C.
D.
Answer : C
Solution :
Laplace transform of sinh (at) =
23
34.The data from a closed traverse survey PQRS (run in the clockwise direction) are given in
the table
The closing error for the traverse PQRS (in degrees) is________
Answer :
Solution :
n = 4 (number of sides of closed traverse)
(2n ? 4) ? 90? = 360?
so, error in included angle
= (88 + 92 + 94 + 89) ? 360 = +3?
35.A vehicle is moving on a road of grade +4% at a speed of 20 m/s. Consider the coefficient
of rolling friction as 0.46 and acceleration due to gravity as 10 m/s
2
. On applying brakes to
reach a speed of 10 m/s, the required braking distance (in m, round off to nearest integer)
along the horizontal, is ______.
Answer :
Solution :
Given: grade = +4%
V1 = 20 m/sec.
f = 0.46
g = 10 m/sec.
V1 = 10 m/sec.
24
We know,
36.A broad gauge railway line passes through a horizontal curved section (radius = 875 m) of
length 200 m. The allowable speed on this portion is 100 km/h. For calculating the cant,
consider the gauge as centre-to-centre distance between the rail heads, equal to 1750mm, The
maximum permissible cant (in mm, round off to 1 decimal place) with respect to the centreto-
centre distance between the rail heads is ______.
Answer :
Solution :
Given data:
R = 875 mm
Allowable speed = 100 kmph
Gauge length G = 1750 mm
Allowable cant
37.When a specimen of M25 concrete is loaded to a stress level of 12.5 MPa, a strain of 500
? 10
?6
is recorded. If this load is allowed to stand for a long time, the strain increases to 1000
? 10
?6
. In accordance with provisions of IS: 456-2000, considering the long-term effects, the
effective modulus of elasticity of the concrete (in MPa) is ________
Answer :
Solution :
FirstRanker.com - FirstRanker's Choice
2
GATE CE 2019 Set 2: Questions & Solutions
General Aptitude
1.Daytime temperature in Delhi can ______ 40?C
A. Peak
B. reach
C. get
D. stand
Answer : B
Solution :
Daytime temperature in Delhi can reach 40?C
2.The growth rate of ABC Motors in 2017 was the same ________ XYZ Motors in 2016 .
A. As those of
B. As that off
C. As that of
D. As off
Answer : C
Solution :
The growth rate of ABC Motors in 2017 was the same as that of XYZ Motors in 2016.
3.Suresh wanted to lay a new carpet in his new mansion with an area of 70 55 sq. mts.
However an area of 550 sq. mts had to be left out for flower pots. If the cost of carpet is Rs.
50 per sq. mts, how much money (in Rs.) will be spent by Suresh for the carpet now?
A. Rs. 1,65,000
B. Rs. 1,92,500
C. Rs. 1,27,500
D. Rs. 2,75,000
Answer : A
3
Solution :
Area of mansion = 70 ? 55 = 3850 m
2
Area for flower pots = 550 m
2
? Area left for carpet = 3850 ? 550 = 3300m
2
? Cost = 3300 ? 50 = 165000
4.A retaining wall with measurements 30 m ? 12 m ? 6 m was constructed with bricks of
dimensions 8 cm ? 6 cm. If 60% of the wall consists of bricks used for the construction is
___________ lakhs.
A. 45
B. 30
C. 40
D. 75
Answer : A
Solution :
Volume of wall = 30 ? 12 ? 6 = 2160 m
3
= 2160 ? 106 cm
3
Total volume of bricks required = 2160 ? 106 ? 0.6 cm
3
= 1296 ? 106 cm
3
Volume of one brick = 8 ? 6 ? 6 = 288 cm
3
? No. of bricks required
= 4.5 ? 10
6
= 45 lakhs
5.Hima Das was _______ only Indian athlete to win _____________ gold for India.
A. the, many
B. an, the
C. an, a
4
D. the, a
Answer : D
Solution :
Hima Das was the only Indian athlete to win a gold for India.
6.Population of state X increased by x% and the population of state Y increased by y% from
2001 to 2011. Assume that x is greater than y. Let P be the ratio of the population of state X
to state Y in a given year. The percentage increase in P from 2001 to 2011 is_____________
A. x ? y
B.
C.
D.
Answer : C
Solution :
Let population of X is ?A? in 2001
and Population of Y is ?B? in 2001
? Population of A in 2011
& Population of B in 2011
Given,
5
% increase in P
7.The Newspaper report that over 500 hectares of tribal land spread across 28 tribal
settlements in Mohinitampuram forest division have already been ?alienated?. A top forest
official said, ?First the tribals are duped out of their land holdings. Second, the families thus
rendered landless are often forced to encroach further into the forests?.
On the basis of the information available in the paragraph, _______ is/are responsible for
duping the tribals.
A. The newspaper
B. Landless families
C. forest officials
D. it cannot be inferred who
Answer : D
Solution :
?it cannot be inferred who?
From given information, nobody can be held responsible.
8.An oil tank can be filled by pipe X in 5 hours and pipe Y in 4 hours, each pump working on
its own. When the oil tank is full and the drainage hole is open, the oil is drained in 20 hours.
6
If initially the tank was empty and someone started the two pumps together but left the
drainage hole open, how many hours will it tak for the tank to be filled? (Assume that the rate
of drainage is independent of the head)
A. 2.50
B. 1.50
C. 2.00
D. 4.00
Answer : A
Solution :
Pipe X will fill how much in one hour tank
Pipe Y will fill how much in one hour tank
Drainage will drain out how much water in 1 hour tank
? Total tank filled in one hour
tank gets filled in = 1 hour
? Full (i) tank gets filled in
9.Mohan, the manager, wants his four workers to work in pairs. No paper should work for
more than 5 hours. Ram and Johan have worked together for 5 hours. Krishna and Amir have
7
worked as a team for 2 hours. Krishan does not want to work with Ram whom should mohan
allot to work with Johan, if we wants all the workers to continue working?
A. Amir
B. Krishna
C. Ram
D. None of the three
Answer : B
Solution :
Conditions given:
(i) Ram & John have worked for 5 hours.
(ii) Krishna doesn?t want to work with Ram.
(iii) No pair should work beyond 5 hours.
Hence, Krishna should work with John to satisfy the above conditions.
10.?Popular Hindi fiction, despite ? or perhaps because of ? its wide reach, often does not
appear in our cinema. As ideals that viewers are meant to look up to rather than identify with,
Hindi film protagonisits usually read books of apsirational value: textbooks, English books,
or high value literature?.
Which one of the following CANNOT be inferred from the paragraph above?
A. Textbooks, English books or high literature have apsirational value, but not popular Hindi
fiction
B. People do not look up to writers of textbooks, English book or high value literature
C. Though popular hindi fiction was wide readh, it often does not appear in the movies
D. Protagonists in Hindi movies, being ideals for viewers, read only books of aspirational
value.
Answer : B
Solution :
People do not look up to writers of textbooks, English book or high value literature.
8
Civil Engineering
11.What is curl of the vector field 2x
2
yi + 5z
2
j - 4yzk?
A. - 14zi - 2x
2
k
B. 6zi + 4xj - 2x
2
k
C. 6zi + 8xyj + 2x
2
yk
D. -14zi + 6yj + 2x
2
k
Answer : A
Solution :
12.Analysis of a water sample revealed that the sample contains the following species.
9
Concentrations of which of the species will be required to compute alkalinity?
A.
B.
C.
D.
Answer : A
Solution :
H2CO3 and HCO3
-
never come together
13.The value of the function f(x) is given at n distinct values of x and its value is to be
interpolated at the point x
*
using all the n points. The estimate is obtained first by the
Lagrange polynomial, denoted by IL, and then by the Newton polynomial, denoted by IN.
Which one of the following statements is correct?
A. IL is always greater than IN
B. No definite relation exists between IL and IN.
C. IL is always less than IN
D. IL and IN are always equal
Answer : B
Solution :
Lagrange?s form is more efficient when you have to interpolate several data sets on the same
data point.
Newton?s form is more efficient when you have to interpolate data incrementally. So no
relationship between both.
14.If the fineness modulus of a sample of the fine aggregates is 4.3, the mean size of the
particles in the sample is between
10
A. 150 ?m and 300 ?m
B. 2.36 mm and 4.75 mm
C. 300 ?m and 600 ?m
D. 1.18 mm and 2.36 mm
Answer : D
Solution :
150 ?m, 300 ?m, 600 ?m, 1.18 mm,
2.36 mm, 4.75 mm, 10 mm, 20 mm,
40 mm, 80 mm
150 ? 1
300 ? 2
600 ? 3
4.75 - 6
15.The command area of a canal grows only one crop, i.e., wheat. The base period of wheat
is 120 days and its total water requirement, ?, is 40 cm. If the canal discharge is 2 m
3
/s, the
area, in hectares, rounded off to the nearest integer, which could be irrigated (neglecting all
losses) is ______________
Answer :
Solution :
B = 120 days
? = 0.4 m
and ? = 8.64B/D
? D = 2592 ha per (m
3
/s)
? For 2m
3
/sec water, area will be 5184 ha
11
16.The characteristic compressive strength of concrete required in a project is 25 MPa and
standard deviation in the observed compressive strength expected at site is 4 MPa. The
average compressive strength of cubes tested at different water-cement (w/c) ratios using the
same material as is used for the project is given in the table.
The water-cement ratio (in percent, round off to the lower integer) to be used in the mix
is________
Answer :
Solution :
fck = 25 ; ? = 4 MPa
fm = fck + 1.65? = 31.6 MPa
Using interpolation
= 46.7 (Rounded off to the lowest integer).
17.A solid sphere of radius, r, and made of material with density ?s, is moving through the
atmosphere (constant pressure, p) with a velocity, ?. The net force ONLY due to atmospheric
pressure (Fp) acting on the sphere at any time, t, is
A.
B. Zero
C. ?r
2
p
D. 4?r
2
p
Answer : B
Solution :
Force = area ? P
12
Net force will be zero as pressure acts from all sides.
18.An earthen dam of height H is made of cohesive soil whose cohesion and unit weight are c
and ?, respectively. If the factor of safety against cohesion is Fc, the Taylor?s stability
A.
B.
C.
D.
Answer : C
Solution :
Taylor?s stability number,
19.A closed thin walled tube has thickness, t, mean enclosed area within the boundary of the
centrline of tube?s thickness, Am, and shear stress ?. Torsional moment of resistance, T of the
section would be
A.
B.
13
C.
D.
Answer : A
Solution :
20.For a channel section subjected to a downward vertical shear force at its centroid, which
one of the following represents the correct distribution of shear stress in flange and web?
A.
B.
C.
14
D.
Answer : C
Solution :
Standard result
21.The degree of static indeterminancy of the plane frame is shown in the figure is ________
Answer :
Solution :
Ds = 3C ? R'
C = 6
Ds = (3 ? 6 ? 2) ? 1 (due to hinge)
= 15
15
22.Structural failures considered in the mechanistic method of bituminous pavement design
are
A. Shear and slippage
B. Fatique and Rutting
C. Fatique and shear
D. Rutting and shear
Answer : B
Solution :
As per IRC66:2012
23.Which one of the options contains ONLY primary air pollutants?
A. Ozone and peroxyacetyl nitrate
B. Nitrogen oxides and peroxyacetyl nitrate
C. Hydrocarbons and nitrogen oxides
D. Hydrocarbons and ozone
Answer : C
Solution :
Ozone and PAN are secondary air pollutants.
24.The following inequality is true for all x close to 0.
What is the value of
A. 2
B. 1/2
C. 0
16
D. 1
Answer : A
Solution :
It is form
L?s hospital rule (differentiate)
Putting 0 everywhere ? still form.
Differentiating numerator and denominator again,
25.The velocity field in a flow system is given by v = 2i + (x + y)j + (xyz)k. The acceleration
of the fluid at (1, 1, 2) is
A. j + k
B. 2i + 10 k
C. 4j + 10k
D. 4i + 12 k
Answer : C
Solution :
17
and
= 2 + (x + y) + (xyz)(0) + 0
and
= 2(yz) + (x + y)(xz) + (xyz)(xy) + 0
az = 2(1 ? 2) + (1 + 1)(1 ? 2) + (1 ? 1
? 2) (1?1)
= 10k
Therefore,
26.A steel column is restrained against both translation and rotation at one end and is
restrained only against rotation but free to translate at the other end. Theoretical and design
(IS: 800 ? 2007) values, respectively, of effective length factor of the column are
18
A. 1.0 and 1.0
B. 1.2 and 1.0
C. 1.2 and 1.2
D. 1.0 and 1.2
Answer : D
Solution :
As per IS:800-2007
27.Euclindean norm (length) of the vector [4 ?2 ? 6]
T
is
A. ?48
B. ?24
C. ?12
D. ?56
Answer : D
Solution :
The Euclidean norm assigns to each vector the length of its arrow. Because of this,
the Euclidean norm is often known as the magnitude. So,
Length
28.An inflow hydrograph is routed through a reservoir to produce an outflow hydrograph.
The peak flow of the inflow hydrograph is PI and the time of occurrence of the peak is tI. The
peak flow of the outflow hydrograph is P0 and the time of occurance of the peak is t0. Which
one of the following statements is correct?
A. PI < P0 and tI > t0
B. PI > P0 and tI > t0
C. PI < P0 and tI < t0
D. PI > P0 and tI < t0
Answer : D
Solution :
19
Pl > Po ; tl < to
29.Construction of a new building founded on a clayey soil was completed in January In
January 2014, the average consolidation settlement of the foundation in clay was recorded as
10 mm. The ultimate consolidation settlement was estimated in design as 40 mm.
Considering double drainage to occur at the clayey soil site, the expected consolidation
settlement in January 2019 (in mm, round off to the nearest integer) will be _____________
Answer :
Solution :
Ultimate consolidation = 40 mm
Recorded consolidation = 10 mm
? Total recorded consolidation
? 40 ? 0.375
20
30.The notation ?SC? as per Indian standard Soil Classification System refers to
A. Clayey silt
B. Sandy clay
C. Calyey sand
D. Silty clay
Answer : C
Solution :
SC : clayey sand
31.The speed-density relationship in a mid-block section of a highway follows the
Greenshield?s model. If the free flow speed is vf and the jam density is kj, the maximum flow
observed on this ection is
A.
B.
C. fvkj
D.
Answer : D
Solution :
?(1)
21
32.An anisotropic soil deposit has coefficient of permeability in vertical and horizontal
directions as kz and kx, respectively. For constructing a flow net, the horizontal dimension of
the problem?s geometry is transformed by a multiplying factor of
A.
B.
C.
D.
Answer : C
Solution :
Flow net for anisotropic soil.
?(i)
If we transformed geometry in x direction let x cordinate be transformed to the new
coordinate xt by the transformation.
22
?(ii)
From eq. (i) & (ii),
Hence prove
So, multiplied factor
33.The Laplace transform of sinh (at) is
A.
B.
C.
D.
Answer : C
Solution :
Laplace transform of sinh (at) =
23
34.The data from a closed traverse survey PQRS (run in the clockwise direction) are given in
the table
The closing error for the traverse PQRS (in degrees) is________
Answer :
Solution :
n = 4 (number of sides of closed traverse)
(2n ? 4) ? 90? = 360?
so, error in included angle
= (88 + 92 + 94 + 89) ? 360 = +3?
35.A vehicle is moving on a road of grade +4% at a speed of 20 m/s. Consider the coefficient
of rolling friction as 0.46 and acceleration due to gravity as 10 m/s
2
. On applying brakes to
reach a speed of 10 m/s, the required braking distance (in m, round off to nearest integer)
along the horizontal, is ______.
Answer :
Solution :
Given: grade = +4%
V1 = 20 m/sec.
f = 0.46
g = 10 m/sec.
V1 = 10 m/sec.
24
We know,
36.A broad gauge railway line passes through a horizontal curved section (radius = 875 m) of
length 200 m. The allowable speed on this portion is 100 km/h. For calculating the cant,
consider the gauge as centre-to-centre distance between the rail heads, equal to 1750mm, The
maximum permissible cant (in mm, round off to 1 decimal place) with respect to the centreto-
centre distance between the rail heads is ______.
Answer :
Solution :
Given data:
R = 875 mm
Allowable speed = 100 kmph
Gauge length G = 1750 mm
Allowable cant
37.When a specimen of M25 concrete is loaded to a stress level of 12.5 MPa, a strain of 500
? 10
?6
is recorded. If this load is allowed to stand for a long time, the strain increases to 1000
? 10
?6
. In accordance with provisions of IS: 456-2000, considering the long-term effects, the
effective modulus of elasticity of the concrete (in MPa) is ________
Answer :
Solution :
25
Short term strain = 500 ? 10
?6
Long term strain = 1000 ? 10
?6
So, creep coefficient,
? = 1
Long-term effective modulus
= 12500 N/mm
2
= 12500 MPa
or
38.The probability density function of a continuous random variable distributed uniformly
between x and y (for y > x) is
A.
B. x ? y
C. y ? x
D.
Answer : D
Solution :
Probability density function of a uniformly distributed random variable.
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2
GATE CE 2019 Set 2: Questions & Solutions
General Aptitude
1.Daytime temperature in Delhi can ______ 40?C
A. Peak
B. reach
C. get
D. stand
Answer : B
Solution :
Daytime temperature in Delhi can reach 40?C
2.The growth rate of ABC Motors in 2017 was the same ________ XYZ Motors in 2016 .
A. As those of
B. As that off
C. As that of
D. As off
Answer : C
Solution :
The growth rate of ABC Motors in 2017 was the same as that of XYZ Motors in 2016.
3.Suresh wanted to lay a new carpet in his new mansion with an area of 70 55 sq. mts.
However an area of 550 sq. mts had to be left out for flower pots. If the cost of carpet is Rs.
50 per sq. mts, how much money (in Rs.) will be spent by Suresh for the carpet now?
A. Rs. 1,65,000
B. Rs. 1,92,500
C. Rs. 1,27,500
D. Rs. 2,75,000
Answer : A
3
Solution :
Area of mansion = 70 ? 55 = 3850 m
2
Area for flower pots = 550 m
2
? Area left for carpet = 3850 ? 550 = 3300m
2
? Cost = 3300 ? 50 = 165000
4.A retaining wall with measurements 30 m ? 12 m ? 6 m was constructed with bricks of
dimensions 8 cm ? 6 cm. If 60% of the wall consists of bricks used for the construction is
___________ lakhs.
A. 45
B. 30
C. 40
D. 75
Answer : A
Solution :
Volume of wall = 30 ? 12 ? 6 = 2160 m
3
= 2160 ? 106 cm
3
Total volume of bricks required = 2160 ? 106 ? 0.6 cm
3
= 1296 ? 106 cm
3
Volume of one brick = 8 ? 6 ? 6 = 288 cm
3
? No. of bricks required
= 4.5 ? 10
6
= 45 lakhs
5.Hima Das was _______ only Indian athlete to win _____________ gold for India.
A. the, many
B. an, the
C. an, a
4
D. the, a
Answer : D
Solution :
Hima Das was the only Indian athlete to win a gold for India.
6.Population of state X increased by x% and the population of state Y increased by y% from
2001 to 2011. Assume that x is greater than y. Let P be the ratio of the population of state X
to state Y in a given year. The percentage increase in P from 2001 to 2011 is_____________
A. x ? y
B.
C.
D.
Answer : C
Solution :
Let population of X is ?A? in 2001
and Population of Y is ?B? in 2001
? Population of A in 2011
& Population of B in 2011
Given,
5
% increase in P
7.The Newspaper report that over 500 hectares of tribal land spread across 28 tribal
settlements in Mohinitampuram forest division have already been ?alienated?. A top forest
official said, ?First the tribals are duped out of their land holdings. Second, the families thus
rendered landless are often forced to encroach further into the forests?.
On the basis of the information available in the paragraph, _______ is/are responsible for
duping the tribals.
A. The newspaper
B. Landless families
C. forest officials
D. it cannot be inferred who
Answer : D
Solution :
?it cannot be inferred who?
From given information, nobody can be held responsible.
8.An oil tank can be filled by pipe X in 5 hours and pipe Y in 4 hours, each pump working on
its own. When the oil tank is full and the drainage hole is open, the oil is drained in 20 hours.
6
If initially the tank was empty and someone started the two pumps together but left the
drainage hole open, how many hours will it tak for the tank to be filled? (Assume that the rate
of drainage is independent of the head)
A. 2.50
B. 1.50
C. 2.00
D. 4.00
Answer : A
Solution :
Pipe X will fill how much in one hour tank
Pipe Y will fill how much in one hour tank
Drainage will drain out how much water in 1 hour tank
? Total tank filled in one hour
tank gets filled in = 1 hour
? Full (i) tank gets filled in
9.Mohan, the manager, wants his four workers to work in pairs. No paper should work for
more than 5 hours. Ram and Johan have worked together for 5 hours. Krishna and Amir have
7
worked as a team for 2 hours. Krishan does not want to work with Ram whom should mohan
allot to work with Johan, if we wants all the workers to continue working?
A. Amir
B. Krishna
C. Ram
D. None of the three
Answer : B
Solution :
Conditions given:
(i) Ram & John have worked for 5 hours.
(ii) Krishna doesn?t want to work with Ram.
(iii) No pair should work beyond 5 hours.
Hence, Krishna should work with John to satisfy the above conditions.
10.?Popular Hindi fiction, despite ? or perhaps because of ? its wide reach, often does not
appear in our cinema. As ideals that viewers are meant to look up to rather than identify with,
Hindi film protagonisits usually read books of apsirational value: textbooks, English books,
or high value literature?.
Which one of the following CANNOT be inferred from the paragraph above?
A. Textbooks, English books or high literature have apsirational value, but not popular Hindi
fiction
B. People do not look up to writers of textbooks, English book or high value literature
C. Though popular hindi fiction was wide readh, it often does not appear in the movies
D. Protagonists in Hindi movies, being ideals for viewers, read only books of aspirational
value.
Answer : B
Solution :
People do not look up to writers of textbooks, English book or high value literature.
8
Civil Engineering
11.What is curl of the vector field 2x
2
yi + 5z
2
j - 4yzk?
A. - 14zi - 2x
2
k
B. 6zi + 4xj - 2x
2
k
C. 6zi + 8xyj + 2x
2
yk
D. -14zi + 6yj + 2x
2
k
Answer : A
Solution :
12.Analysis of a water sample revealed that the sample contains the following species.
9
Concentrations of which of the species will be required to compute alkalinity?
A.
B.
C.
D.
Answer : A
Solution :
H2CO3 and HCO3
-
never come together
13.The value of the function f(x) is given at n distinct values of x and its value is to be
interpolated at the point x
*
using all the n points. The estimate is obtained first by the
Lagrange polynomial, denoted by IL, and then by the Newton polynomial, denoted by IN.
Which one of the following statements is correct?
A. IL is always greater than IN
B. No definite relation exists between IL and IN.
C. IL is always less than IN
D. IL and IN are always equal
Answer : B
Solution :
Lagrange?s form is more efficient when you have to interpolate several data sets on the same
data point.
Newton?s form is more efficient when you have to interpolate data incrementally. So no
relationship between both.
14.If the fineness modulus of a sample of the fine aggregates is 4.3, the mean size of the
particles in the sample is between
10
A. 150 ?m and 300 ?m
B. 2.36 mm and 4.75 mm
C. 300 ?m and 600 ?m
D. 1.18 mm and 2.36 mm
Answer : D
Solution :
150 ?m, 300 ?m, 600 ?m, 1.18 mm,
2.36 mm, 4.75 mm, 10 mm, 20 mm,
40 mm, 80 mm
150 ? 1
300 ? 2
600 ? 3
4.75 - 6
15.The command area of a canal grows only one crop, i.e., wheat. The base period of wheat
is 120 days and its total water requirement, ?, is 40 cm. If the canal discharge is 2 m
3
/s, the
area, in hectares, rounded off to the nearest integer, which could be irrigated (neglecting all
losses) is ______________
Answer :
Solution :
B = 120 days
? = 0.4 m
and ? = 8.64B/D
? D = 2592 ha per (m
3
/s)
? For 2m
3
/sec water, area will be 5184 ha
11
16.The characteristic compressive strength of concrete required in a project is 25 MPa and
standard deviation in the observed compressive strength expected at site is 4 MPa. The
average compressive strength of cubes tested at different water-cement (w/c) ratios using the
same material as is used for the project is given in the table.
The water-cement ratio (in percent, round off to the lower integer) to be used in the mix
is________
Answer :
Solution :
fck = 25 ; ? = 4 MPa
fm = fck + 1.65? = 31.6 MPa
Using interpolation
= 46.7 (Rounded off to the lowest integer).
17.A solid sphere of radius, r, and made of material with density ?s, is moving through the
atmosphere (constant pressure, p) with a velocity, ?. The net force ONLY due to atmospheric
pressure (Fp) acting on the sphere at any time, t, is
A.
B. Zero
C. ?r
2
p
D. 4?r
2
p
Answer : B
Solution :
Force = area ? P
12
Net force will be zero as pressure acts from all sides.
18.An earthen dam of height H is made of cohesive soil whose cohesion and unit weight are c
and ?, respectively. If the factor of safety against cohesion is Fc, the Taylor?s stability
A.
B.
C.
D.
Answer : C
Solution :
Taylor?s stability number,
19.A closed thin walled tube has thickness, t, mean enclosed area within the boundary of the
centrline of tube?s thickness, Am, and shear stress ?. Torsional moment of resistance, T of the
section would be
A.
B.
13
C.
D.
Answer : A
Solution :
20.For a channel section subjected to a downward vertical shear force at its centroid, which
one of the following represents the correct distribution of shear stress in flange and web?
A.
B.
C.
14
D.
Answer : C
Solution :
Standard result
21.The degree of static indeterminancy of the plane frame is shown in the figure is ________
Answer :
Solution :
Ds = 3C ? R'
C = 6
Ds = (3 ? 6 ? 2) ? 1 (due to hinge)
= 15
15
22.Structural failures considered in the mechanistic method of bituminous pavement design
are
A. Shear and slippage
B. Fatique and Rutting
C. Fatique and shear
D. Rutting and shear
Answer : B
Solution :
As per IRC66:2012
23.Which one of the options contains ONLY primary air pollutants?
A. Ozone and peroxyacetyl nitrate
B. Nitrogen oxides and peroxyacetyl nitrate
C. Hydrocarbons and nitrogen oxides
D. Hydrocarbons and ozone
Answer : C
Solution :
Ozone and PAN are secondary air pollutants.
24.The following inequality is true for all x close to 0.
What is the value of
A. 2
B. 1/2
C. 0
16
D. 1
Answer : A
Solution :
It is form
L?s hospital rule (differentiate)
Putting 0 everywhere ? still form.
Differentiating numerator and denominator again,
25.The velocity field in a flow system is given by v = 2i + (x + y)j + (xyz)k. The acceleration
of the fluid at (1, 1, 2) is
A. j + k
B. 2i + 10 k
C. 4j + 10k
D. 4i + 12 k
Answer : C
Solution :
17
and
= 2 + (x + y) + (xyz)(0) + 0
and
= 2(yz) + (x + y)(xz) + (xyz)(xy) + 0
az = 2(1 ? 2) + (1 + 1)(1 ? 2) + (1 ? 1
? 2) (1?1)
= 10k
Therefore,
26.A steel column is restrained against both translation and rotation at one end and is
restrained only against rotation but free to translate at the other end. Theoretical and design
(IS: 800 ? 2007) values, respectively, of effective length factor of the column are
18
A. 1.0 and 1.0
B. 1.2 and 1.0
C. 1.2 and 1.2
D. 1.0 and 1.2
Answer : D
Solution :
As per IS:800-2007
27.Euclindean norm (length) of the vector [4 ?2 ? 6]
T
is
A. ?48
B. ?24
C. ?12
D. ?56
Answer : D
Solution :
The Euclidean norm assigns to each vector the length of its arrow. Because of this,
the Euclidean norm is often known as the magnitude. So,
Length
28.An inflow hydrograph is routed through a reservoir to produce an outflow hydrograph.
The peak flow of the inflow hydrograph is PI and the time of occurrence of the peak is tI. The
peak flow of the outflow hydrograph is P0 and the time of occurance of the peak is t0. Which
one of the following statements is correct?
A. PI < P0 and tI > t0
B. PI > P0 and tI > t0
C. PI < P0 and tI < t0
D. PI > P0 and tI < t0
Answer : D
Solution :
19
Pl > Po ; tl < to
29.Construction of a new building founded on a clayey soil was completed in January In
January 2014, the average consolidation settlement of the foundation in clay was recorded as
10 mm. The ultimate consolidation settlement was estimated in design as 40 mm.
Considering double drainage to occur at the clayey soil site, the expected consolidation
settlement in January 2019 (in mm, round off to the nearest integer) will be _____________
Answer :
Solution :
Ultimate consolidation = 40 mm
Recorded consolidation = 10 mm
? Total recorded consolidation
? 40 ? 0.375
20
30.The notation ?SC? as per Indian standard Soil Classification System refers to
A. Clayey silt
B. Sandy clay
C. Calyey sand
D. Silty clay
Answer : C
Solution :
SC : clayey sand
31.The speed-density relationship in a mid-block section of a highway follows the
Greenshield?s model. If the free flow speed is vf and the jam density is kj, the maximum flow
observed on this ection is
A.
B.
C. fvkj
D.
Answer : D
Solution :
?(1)
21
32.An anisotropic soil deposit has coefficient of permeability in vertical and horizontal
directions as kz and kx, respectively. For constructing a flow net, the horizontal dimension of
the problem?s geometry is transformed by a multiplying factor of
A.
B.
C.
D.
Answer : C
Solution :
Flow net for anisotropic soil.
?(i)
If we transformed geometry in x direction let x cordinate be transformed to the new
coordinate xt by the transformation.
22
?(ii)
From eq. (i) & (ii),
Hence prove
So, multiplied factor
33.The Laplace transform of sinh (at) is
A.
B.
C.
D.
Answer : C
Solution :
Laplace transform of sinh (at) =
23
34.The data from a closed traverse survey PQRS (run in the clockwise direction) are given in
the table
The closing error for the traverse PQRS (in degrees) is________
Answer :
Solution :
n = 4 (number of sides of closed traverse)
(2n ? 4) ? 90? = 360?
so, error in included angle
= (88 + 92 + 94 + 89) ? 360 = +3?
35.A vehicle is moving on a road of grade +4% at a speed of 20 m/s. Consider the coefficient
of rolling friction as 0.46 and acceleration due to gravity as 10 m/s
2
. On applying brakes to
reach a speed of 10 m/s, the required braking distance (in m, round off to nearest integer)
along the horizontal, is ______.
Answer :
Solution :
Given: grade = +4%
V1 = 20 m/sec.
f = 0.46
g = 10 m/sec.
V1 = 10 m/sec.
24
We know,
36.A broad gauge railway line passes through a horizontal curved section (radius = 875 m) of
length 200 m. The allowable speed on this portion is 100 km/h. For calculating the cant,
consider the gauge as centre-to-centre distance between the rail heads, equal to 1750mm, The
maximum permissible cant (in mm, round off to 1 decimal place) with respect to the centreto-
centre distance between the rail heads is ______.
Answer :
Solution :
Given data:
R = 875 mm
Allowable speed = 100 kmph
Gauge length G = 1750 mm
Allowable cant
37.When a specimen of M25 concrete is loaded to a stress level of 12.5 MPa, a strain of 500
? 10
?6
is recorded. If this load is allowed to stand for a long time, the strain increases to 1000
? 10
?6
. In accordance with provisions of IS: 456-2000, considering the long-term effects, the
effective modulus of elasticity of the concrete (in MPa) is ________
Answer :
Solution :
25
Short term strain = 500 ? 10
?6
Long term strain = 1000 ? 10
?6
So, creep coefficient,
? = 1
Long-term effective modulus
= 12500 N/mm
2
= 12500 MPa
or
38.The probability density function of a continuous random variable distributed uniformly
between x and y (for y > x) is
A.
B. x ? y
C. y ? x
D.
Answer : D
Solution :
Probability density function of a uniformly distributed random variable.
26
39.The uniform arrival and uniform service rates observed on an approach road to a
signalized intersection are 20 and 50 vehicles/minutes, respectively. For this signal, the red
time is 30 s, the effective green time is 30 s, and the cycle length is 60s. Assuming that
initially there are no vehicles in the queue, the average delay per vehicle using the approach
road during a cycle length (in s, round off to 2 decimal places) is _______
Answer :
Solution :
Average delay per vehicle
= 12.5 sec
40.A rolled I-section beam is supported on a 75 mm wide bearing plate as shown in the
figure. Thickness of flange and web of the I-section are 20 mm and 8mm, respectively. Root
FirstRanker.com - FirstRanker's Choice
2
GATE CE 2019 Set 2: Questions & Solutions
General Aptitude
1.Daytime temperature in Delhi can ______ 40?C
A. Peak
B. reach
C. get
D. stand
Answer : B
Solution :
Daytime temperature in Delhi can reach 40?C
2.The growth rate of ABC Motors in 2017 was the same ________ XYZ Motors in 2016 .
A. As those of
B. As that off
C. As that of
D. As off
Answer : C
Solution :
The growth rate of ABC Motors in 2017 was the same as that of XYZ Motors in 2016.
3.Suresh wanted to lay a new carpet in his new mansion with an area of 70 55 sq. mts.
However an area of 550 sq. mts had to be left out for flower pots. If the cost of carpet is Rs.
50 per sq. mts, how much money (in Rs.) will be spent by Suresh for the carpet now?
A. Rs. 1,65,000
B. Rs. 1,92,500
C. Rs. 1,27,500
D. Rs. 2,75,000
Answer : A
3
Solution :
Area of mansion = 70 ? 55 = 3850 m
2
Area for flower pots = 550 m
2
? Area left for carpet = 3850 ? 550 = 3300m
2
? Cost = 3300 ? 50 = 165000
4.A retaining wall with measurements 30 m ? 12 m ? 6 m was constructed with bricks of
dimensions 8 cm ? 6 cm. If 60% of the wall consists of bricks used for the construction is
___________ lakhs.
A. 45
B. 30
C. 40
D. 75
Answer : A
Solution :
Volume of wall = 30 ? 12 ? 6 = 2160 m
3
= 2160 ? 106 cm
3
Total volume of bricks required = 2160 ? 106 ? 0.6 cm
3
= 1296 ? 106 cm
3
Volume of one brick = 8 ? 6 ? 6 = 288 cm
3
? No. of bricks required
= 4.5 ? 10
6
= 45 lakhs
5.Hima Das was _______ only Indian athlete to win _____________ gold for India.
A. the, many
B. an, the
C. an, a
4
D. the, a
Answer : D
Solution :
Hima Das was the only Indian athlete to win a gold for India.
6.Population of state X increased by x% and the population of state Y increased by y% from
2001 to 2011. Assume that x is greater than y. Let P be the ratio of the population of state X
to state Y in a given year. The percentage increase in P from 2001 to 2011 is_____________
A. x ? y
B.
C.
D.
Answer : C
Solution :
Let population of X is ?A? in 2001
and Population of Y is ?B? in 2001
? Population of A in 2011
& Population of B in 2011
Given,
5
% increase in P
7.The Newspaper report that over 500 hectares of tribal land spread across 28 tribal
settlements in Mohinitampuram forest division have already been ?alienated?. A top forest
official said, ?First the tribals are duped out of their land holdings. Second, the families thus
rendered landless are often forced to encroach further into the forests?.
On the basis of the information available in the paragraph, _______ is/are responsible for
duping the tribals.
A. The newspaper
B. Landless families
C. forest officials
D. it cannot be inferred who
Answer : D
Solution :
?it cannot be inferred who?
From given information, nobody can be held responsible.
8.An oil tank can be filled by pipe X in 5 hours and pipe Y in 4 hours, each pump working on
its own. When the oil tank is full and the drainage hole is open, the oil is drained in 20 hours.
6
If initially the tank was empty and someone started the two pumps together but left the
drainage hole open, how many hours will it tak for the tank to be filled? (Assume that the rate
of drainage is independent of the head)
A. 2.50
B. 1.50
C. 2.00
D. 4.00
Answer : A
Solution :
Pipe X will fill how much in one hour tank
Pipe Y will fill how much in one hour tank
Drainage will drain out how much water in 1 hour tank
? Total tank filled in one hour
tank gets filled in = 1 hour
? Full (i) tank gets filled in
9.Mohan, the manager, wants his four workers to work in pairs. No paper should work for
more than 5 hours. Ram and Johan have worked together for 5 hours. Krishna and Amir have
7
worked as a team for 2 hours. Krishan does not want to work with Ram whom should mohan
allot to work with Johan, if we wants all the workers to continue working?
A. Amir
B. Krishna
C. Ram
D. None of the three
Answer : B
Solution :
Conditions given:
(i) Ram & John have worked for 5 hours.
(ii) Krishna doesn?t want to work with Ram.
(iii) No pair should work beyond 5 hours.
Hence, Krishna should work with John to satisfy the above conditions.
10.?Popular Hindi fiction, despite ? or perhaps because of ? its wide reach, often does not
appear in our cinema. As ideals that viewers are meant to look up to rather than identify with,
Hindi film protagonisits usually read books of apsirational value: textbooks, English books,
or high value literature?.
Which one of the following CANNOT be inferred from the paragraph above?
A. Textbooks, English books or high literature have apsirational value, but not popular Hindi
fiction
B. People do not look up to writers of textbooks, English book or high value literature
C. Though popular hindi fiction was wide readh, it often does not appear in the movies
D. Protagonists in Hindi movies, being ideals for viewers, read only books of aspirational
value.
Answer : B
Solution :
People do not look up to writers of textbooks, English book or high value literature.
8
Civil Engineering
11.What is curl of the vector field 2x
2
yi + 5z
2
j - 4yzk?
A. - 14zi - 2x
2
k
B. 6zi + 4xj - 2x
2
k
C. 6zi + 8xyj + 2x
2
yk
D. -14zi + 6yj + 2x
2
k
Answer : A
Solution :
12.Analysis of a water sample revealed that the sample contains the following species.
9
Concentrations of which of the species will be required to compute alkalinity?
A.
B.
C.
D.
Answer : A
Solution :
H2CO3 and HCO3
-
never come together
13.The value of the function f(x) is given at n distinct values of x and its value is to be
interpolated at the point x
*
using all the n points. The estimate is obtained first by the
Lagrange polynomial, denoted by IL, and then by the Newton polynomial, denoted by IN.
Which one of the following statements is correct?
A. IL is always greater than IN
B. No definite relation exists between IL and IN.
C. IL is always less than IN
D. IL and IN are always equal
Answer : B
Solution :
Lagrange?s form is more efficient when you have to interpolate several data sets on the same
data point.
Newton?s form is more efficient when you have to interpolate data incrementally. So no
relationship between both.
14.If the fineness modulus of a sample of the fine aggregates is 4.3, the mean size of the
particles in the sample is between
10
A. 150 ?m and 300 ?m
B. 2.36 mm and 4.75 mm
C. 300 ?m and 600 ?m
D. 1.18 mm and 2.36 mm
Answer : D
Solution :
150 ?m, 300 ?m, 600 ?m, 1.18 mm,
2.36 mm, 4.75 mm, 10 mm, 20 mm,
40 mm, 80 mm
150 ? 1
300 ? 2
600 ? 3
4.75 - 6
15.The command area of a canal grows only one crop, i.e., wheat. The base period of wheat
is 120 days and its total water requirement, ?, is 40 cm. If the canal discharge is 2 m
3
/s, the
area, in hectares, rounded off to the nearest integer, which could be irrigated (neglecting all
losses) is ______________
Answer :
Solution :
B = 120 days
? = 0.4 m
and ? = 8.64B/D
? D = 2592 ha per (m
3
/s)
? For 2m
3
/sec water, area will be 5184 ha
11
16.The characteristic compressive strength of concrete required in a project is 25 MPa and
standard deviation in the observed compressive strength expected at site is 4 MPa. The
average compressive strength of cubes tested at different water-cement (w/c) ratios using the
same material as is used for the project is given in the table.
The water-cement ratio (in percent, round off to the lower integer) to be used in the mix
is________
Answer :
Solution :
fck = 25 ; ? = 4 MPa
fm = fck + 1.65? = 31.6 MPa
Using interpolation
= 46.7 (Rounded off to the lowest integer).
17.A solid sphere of radius, r, and made of material with density ?s, is moving through the
atmosphere (constant pressure, p) with a velocity, ?. The net force ONLY due to atmospheric
pressure (Fp) acting on the sphere at any time, t, is
A.
B. Zero
C. ?r
2
p
D. 4?r
2
p
Answer : B
Solution :
Force = area ? P
12
Net force will be zero as pressure acts from all sides.
18.An earthen dam of height H is made of cohesive soil whose cohesion and unit weight are c
and ?, respectively. If the factor of safety against cohesion is Fc, the Taylor?s stability
A.
B.
C.
D.
Answer : C
Solution :
Taylor?s stability number,
19.A closed thin walled tube has thickness, t, mean enclosed area within the boundary of the
centrline of tube?s thickness, Am, and shear stress ?. Torsional moment of resistance, T of the
section would be
A.
B.
13
C.
D.
Answer : A
Solution :
20.For a channel section subjected to a downward vertical shear force at its centroid, which
one of the following represents the correct distribution of shear stress in flange and web?
A.
B.
C.
14
D.
Answer : C
Solution :
Standard result
21.The degree of static indeterminancy of the plane frame is shown in the figure is ________
Answer :
Solution :
Ds = 3C ? R'
C = 6
Ds = (3 ? 6 ? 2) ? 1 (due to hinge)
= 15
15
22.Structural failures considered in the mechanistic method of bituminous pavement design
are
A. Shear and slippage
B. Fatique and Rutting
C. Fatique and shear
D. Rutting and shear
Answer : B
Solution :
As per IRC66:2012
23.Which one of the options contains ONLY primary air pollutants?
A. Ozone and peroxyacetyl nitrate
B. Nitrogen oxides and peroxyacetyl nitrate
C. Hydrocarbons and nitrogen oxides
D. Hydrocarbons and ozone
Answer : C
Solution :
Ozone and PAN are secondary air pollutants.
24.The following inequality is true for all x close to 0.
What is the value of
A. 2
B. 1/2
C. 0
16
D. 1
Answer : A
Solution :
It is form
L?s hospital rule (differentiate)
Putting 0 everywhere ? still form.
Differentiating numerator and denominator again,
25.The velocity field in a flow system is given by v = 2i + (x + y)j + (xyz)k. The acceleration
of the fluid at (1, 1, 2) is
A. j + k
B. 2i + 10 k
C. 4j + 10k
D. 4i + 12 k
Answer : C
Solution :
17
and
= 2 + (x + y) + (xyz)(0) + 0
and
= 2(yz) + (x + y)(xz) + (xyz)(xy) + 0
az = 2(1 ? 2) + (1 + 1)(1 ? 2) + (1 ? 1
? 2) (1?1)
= 10k
Therefore,
26.A steel column is restrained against both translation and rotation at one end and is
restrained only against rotation but free to translate at the other end. Theoretical and design
(IS: 800 ? 2007) values, respectively, of effective length factor of the column are
18
A. 1.0 and 1.0
B. 1.2 and 1.0
C. 1.2 and 1.2
D. 1.0 and 1.2
Answer : D
Solution :
As per IS:800-2007
27.Euclindean norm (length) of the vector [4 ?2 ? 6]
T
is
A. ?48
B. ?24
C. ?12
D. ?56
Answer : D
Solution :
The Euclidean norm assigns to each vector the length of its arrow. Because of this,
the Euclidean norm is often known as the magnitude. So,
Length
28.An inflow hydrograph is routed through a reservoir to produce an outflow hydrograph.
The peak flow of the inflow hydrograph is PI and the time of occurrence of the peak is tI. The
peak flow of the outflow hydrograph is P0 and the time of occurance of the peak is t0. Which
one of the following statements is correct?
A. PI < P0 and tI > t0
B. PI > P0 and tI > t0
C. PI < P0 and tI < t0
D. PI > P0 and tI < t0
Answer : D
Solution :
19
Pl > Po ; tl < to
29.Construction of a new building founded on a clayey soil was completed in January In
January 2014, the average consolidation settlement of the foundation in clay was recorded as
10 mm. The ultimate consolidation settlement was estimated in design as 40 mm.
Considering double drainage to occur at the clayey soil site, the expected consolidation
settlement in January 2019 (in mm, round off to the nearest integer) will be _____________
Answer :
Solution :
Ultimate consolidation = 40 mm
Recorded consolidation = 10 mm
? Total recorded consolidation
? 40 ? 0.375
20
30.The notation ?SC? as per Indian standard Soil Classification System refers to
A. Clayey silt
B. Sandy clay
C. Calyey sand
D. Silty clay
Answer : C
Solution :
SC : clayey sand
31.The speed-density relationship in a mid-block section of a highway follows the
Greenshield?s model. If the free flow speed is vf and the jam density is kj, the maximum flow
observed on this ection is
A.
B.
C. fvkj
D.
Answer : D
Solution :
?(1)
21
32.An anisotropic soil deposit has coefficient of permeability in vertical and horizontal
directions as kz and kx, respectively. For constructing a flow net, the horizontal dimension of
the problem?s geometry is transformed by a multiplying factor of
A.
B.
C.
D.
Answer : C
Solution :
Flow net for anisotropic soil.
?(i)
If we transformed geometry in x direction let x cordinate be transformed to the new
coordinate xt by the transformation.
22
?(ii)
From eq. (i) & (ii),
Hence prove
So, multiplied factor
33.The Laplace transform of sinh (at) is
A.
B.
C.
D.
Answer : C
Solution :
Laplace transform of sinh (at) =
23
34.The data from a closed traverse survey PQRS (run in the clockwise direction) are given in
the table
The closing error for the traverse PQRS (in degrees) is________
Answer :
Solution :
n = 4 (number of sides of closed traverse)
(2n ? 4) ? 90? = 360?
so, error in included angle
= (88 + 92 + 94 + 89) ? 360 = +3?
35.A vehicle is moving on a road of grade +4% at a speed of 20 m/s. Consider the coefficient
of rolling friction as 0.46 and acceleration due to gravity as 10 m/s
2
. On applying brakes to
reach a speed of 10 m/s, the required braking distance (in m, round off to nearest integer)
along the horizontal, is ______.
Answer :
Solution :
Given: grade = +4%
V1 = 20 m/sec.
f = 0.46
g = 10 m/sec.
V1 = 10 m/sec.
24
We know,
36.A broad gauge railway line passes through a horizontal curved section (radius = 875 m) of
length 200 m. The allowable speed on this portion is 100 km/h. For calculating the cant,
consider the gauge as centre-to-centre distance between the rail heads, equal to 1750mm, The
maximum permissible cant (in mm, round off to 1 decimal place) with respect to the centreto-
centre distance between the rail heads is ______.
Answer :
Solution :
Given data:
R = 875 mm
Allowable speed = 100 kmph
Gauge length G = 1750 mm
Allowable cant
37.When a specimen of M25 concrete is loaded to a stress level of 12.5 MPa, a strain of 500
? 10
?6
is recorded. If this load is allowed to stand for a long time, the strain increases to 1000
? 10
?6
. In accordance with provisions of IS: 456-2000, considering the long-term effects, the
effective modulus of elasticity of the concrete (in MPa) is ________
Answer :
Solution :
25
Short term strain = 500 ? 10
?6
Long term strain = 1000 ? 10
?6
So, creep coefficient,
? = 1
Long-term effective modulus
= 12500 N/mm
2
= 12500 MPa
or
38.The probability density function of a continuous random variable distributed uniformly
between x and y (for y > x) is
A.
B. x ? y
C. y ? x
D.
Answer : D
Solution :
Probability density function of a uniformly distributed random variable.
26
39.The uniform arrival and uniform service rates observed on an approach road to a
signalized intersection are 20 and 50 vehicles/minutes, respectively. For this signal, the red
time is 30 s, the effective green time is 30 s, and the cycle length is 60s. Assuming that
initially there are no vehicles in the queue, the average delay per vehicle using the approach
road during a cycle length (in s, round off to 2 decimal places) is _______
Answer :
Solution :
Average delay per vehicle
= 12.5 sec
40.A rolled I-section beam is supported on a 75 mm wide bearing plate as shown in the
figure. Thickness of flange and web of the I-section are 20 mm and 8mm, respectively. Root
27
radius of the I-section is 10mm. Assuming: material yield stress,
fy = 250 MPa and partial safety factor for material, ?mo = 1.10
As per IS: 800-2007, the web bearing strength (in kN, round off to 2 decimal places) of the
beam is _______
Answer :
Solution :
Effective area in bearing = [75 + 2.5 (flange thickness + root radius)] ? 8
= [75 + 2.5 (20 + 10)] ? 8
= 1200 mm
2
so, web bearing strength
= 272.73 kN
41.The critical bending compressive stress in the extreme fibre of a structural steel section is
1000 MPa. It is given that the yield strength of the steel is 250 MPa, width of flange is 250
mm and thickness of flange is 15 mm. As per the provisions of IS: 800-2007, the
nondimensional slendeness ratio of the steel crosssection is
FirstRanker.com - FirstRanker's Choice
2
GATE CE 2019 Set 2: Questions & Solutions
General Aptitude
1.Daytime temperature in Delhi can ______ 40?C
A. Peak
B. reach
C. get
D. stand
Answer : B
Solution :
Daytime temperature in Delhi can reach 40?C
2.The growth rate of ABC Motors in 2017 was the same ________ XYZ Motors in 2016 .
A. As those of
B. As that off
C. As that of
D. As off
Answer : C
Solution :
The growth rate of ABC Motors in 2017 was the same as that of XYZ Motors in 2016.
3.Suresh wanted to lay a new carpet in his new mansion with an area of 70 55 sq. mts.
However an area of 550 sq. mts had to be left out for flower pots. If the cost of carpet is Rs.
50 per sq. mts, how much money (in Rs.) will be spent by Suresh for the carpet now?
A. Rs. 1,65,000
B. Rs. 1,92,500
C. Rs. 1,27,500
D. Rs. 2,75,000
Answer : A
3
Solution :
Area of mansion = 70 ? 55 = 3850 m
2
Area for flower pots = 550 m
2
? Area left for carpet = 3850 ? 550 = 3300m
2
? Cost = 3300 ? 50 = 165000
4.A retaining wall with measurements 30 m ? 12 m ? 6 m was constructed with bricks of
dimensions 8 cm ? 6 cm. If 60% of the wall consists of bricks used for the construction is
___________ lakhs.
A. 45
B. 30
C. 40
D. 75
Answer : A
Solution :
Volume of wall = 30 ? 12 ? 6 = 2160 m
3
= 2160 ? 106 cm
3
Total volume of bricks required = 2160 ? 106 ? 0.6 cm
3
= 1296 ? 106 cm
3
Volume of one brick = 8 ? 6 ? 6 = 288 cm
3
? No. of bricks required
= 4.5 ? 10
6
= 45 lakhs
5.Hima Das was _______ only Indian athlete to win _____________ gold for India.
A. the, many
B. an, the
C. an, a
4
D. the, a
Answer : D
Solution :
Hima Das was the only Indian athlete to win a gold for India.
6.Population of state X increased by x% and the population of state Y increased by y% from
2001 to 2011. Assume that x is greater than y. Let P be the ratio of the population of state X
to state Y in a given year. The percentage increase in P from 2001 to 2011 is_____________
A. x ? y
B.
C.
D.
Answer : C
Solution :
Let population of X is ?A? in 2001
and Population of Y is ?B? in 2001
? Population of A in 2011
& Population of B in 2011
Given,
5
% increase in P
7.The Newspaper report that over 500 hectares of tribal land spread across 28 tribal
settlements in Mohinitampuram forest division have already been ?alienated?. A top forest
official said, ?First the tribals are duped out of their land holdings. Second, the families thus
rendered landless are often forced to encroach further into the forests?.
On the basis of the information available in the paragraph, _______ is/are responsible for
duping the tribals.
A. The newspaper
B. Landless families
C. forest officials
D. it cannot be inferred who
Answer : D
Solution :
?it cannot be inferred who?
From given information, nobody can be held responsible.
8.An oil tank can be filled by pipe X in 5 hours and pipe Y in 4 hours, each pump working on
its own. When the oil tank is full and the drainage hole is open, the oil is drained in 20 hours.
6
If initially the tank was empty and someone started the two pumps together but left the
drainage hole open, how many hours will it tak for the tank to be filled? (Assume that the rate
of drainage is independent of the head)
A. 2.50
B. 1.50
C. 2.00
D. 4.00
Answer : A
Solution :
Pipe X will fill how much in one hour tank
Pipe Y will fill how much in one hour tank
Drainage will drain out how much water in 1 hour tank
? Total tank filled in one hour
tank gets filled in = 1 hour
? Full (i) tank gets filled in
9.Mohan, the manager, wants his four workers to work in pairs. No paper should work for
more than 5 hours. Ram and Johan have worked together for 5 hours. Krishna and Amir have
7
worked as a team for 2 hours. Krishan does not want to work with Ram whom should mohan
allot to work with Johan, if we wants all the workers to continue working?
A. Amir
B. Krishna
C. Ram
D. None of the three
Answer : B
Solution :
Conditions given:
(i) Ram & John have worked for 5 hours.
(ii) Krishna doesn?t want to work with Ram.
(iii) No pair should work beyond 5 hours.
Hence, Krishna should work with John to satisfy the above conditions.
10.?Popular Hindi fiction, despite ? or perhaps because of ? its wide reach, often does not
appear in our cinema. As ideals that viewers are meant to look up to rather than identify with,
Hindi film protagonisits usually read books of apsirational value: textbooks, English books,
or high value literature?.
Which one of the following CANNOT be inferred from the paragraph above?
A. Textbooks, English books or high literature have apsirational value, but not popular Hindi
fiction
B. People do not look up to writers of textbooks, English book or high value literature
C. Though popular hindi fiction was wide readh, it often does not appear in the movies
D. Protagonists in Hindi movies, being ideals for viewers, read only books of aspirational
value.
Answer : B
Solution :
People do not look up to writers of textbooks, English book or high value literature.
8
Civil Engineering
11.What is curl of the vector field 2x
2
yi + 5z
2
j - 4yzk?
A. - 14zi - 2x
2
k
B. 6zi + 4xj - 2x
2
k
C. 6zi + 8xyj + 2x
2
yk
D. -14zi + 6yj + 2x
2
k
Answer : A
Solution :
12.Analysis of a water sample revealed that the sample contains the following species.
9
Concentrations of which of the species will be required to compute alkalinity?
A.
B.
C.
D.
Answer : A
Solution :
H2CO3 and HCO3
-
never come together
13.The value of the function f(x) is given at n distinct values of x and its value is to be
interpolated at the point x
*
using all the n points. The estimate is obtained first by the
Lagrange polynomial, denoted by IL, and then by the Newton polynomial, denoted by IN.
Which one of the following statements is correct?
A. IL is always greater than IN
B. No definite relation exists between IL and IN.
C. IL is always less than IN
D. IL and IN are always equal
Answer : B
Solution :
Lagrange?s form is more efficient when you have to interpolate several data sets on the same
data point.
Newton?s form is more efficient when you have to interpolate data incrementally. So no
relationship between both.
14.If the fineness modulus of a sample of the fine aggregates is 4.3, the mean size of the
particles in the sample is between
10
A. 150 ?m and 300 ?m
B. 2.36 mm and 4.75 mm
C. 300 ?m and 600 ?m
D. 1.18 mm and 2.36 mm
Answer : D
Solution :
150 ?m, 300 ?m, 600 ?m, 1.18 mm,
2.36 mm, 4.75 mm, 10 mm, 20 mm,
40 mm, 80 mm
150 ? 1
300 ? 2
600 ? 3
4.75 - 6
15.The command area of a canal grows only one crop, i.e., wheat. The base period of wheat
is 120 days and its total water requirement, ?, is 40 cm. If the canal discharge is 2 m
3
/s, the
area, in hectares, rounded off to the nearest integer, which could be irrigated (neglecting all
losses) is ______________
Answer :
Solution :
B = 120 days
? = 0.4 m
and ? = 8.64B/D
? D = 2592 ha per (m
3
/s)
? For 2m
3
/sec water, area will be 5184 ha
11
16.The characteristic compressive strength of concrete required in a project is 25 MPa and
standard deviation in the observed compressive strength expected at site is 4 MPa. The
average compressive strength of cubes tested at different water-cement (w/c) ratios using the
same material as is used for the project is given in the table.
The water-cement ratio (in percent, round off to the lower integer) to be used in the mix
is________
Answer :
Solution :
fck = 25 ; ? = 4 MPa
fm = fck + 1.65? = 31.6 MPa
Using interpolation
= 46.7 (Rounded off to the lowest integer).
17.A solid sphere of radius, r, and made of material with density ?s, is moving through the
atmosphere (constant pressure, p) with a velocity, ?. The net force ONLY due to atmospheric
pressure (Fp) acting on the sphere at any time, t, is
A.
B. Zero
C. ?r
2
p
D. 4?r
2
p
Answer : B
Solution :
Force = area ? P
12
Net force will be zero as pressure acts from all sides.
18.An earthen dam of height H is made of cohesive soil whose cohesion and unit weight are c
and ?, respectively. If the factor of safety against cohesion is Fc, the Taylor?s stability
A.
B.
C.
D.
Answer : C
Solution :
Taylor?s stability number,
19.A closed thin walled tube has thickness, t, mean enclosed area within the boundary of the
centrline of tube?s thickness, Am, and shear stress ?. Torsional moment of resistance, T of the
section would be
A.
B.
13
C.
D.
Answer : A
Solution :
20.For a channel section subjected to a downward vertical shear force at its centroid, which
one of the following represents the correct distribution of shear stress in flange and web?
A.
B.
C.
14
D.
Answer : C
Solution :
Standard result
21.The degree of static indeterminancy of the plane frame is shown in the figure is ________
Answer :
Solution :
Ds = 3C ? R'
C = 6
Ds = (3 ? 6 ? 2) ? 1 (due to hinge)
= 15
15
22.Structural failures considered in the mechanistic method of bituminous pavement design
are
A. Shear and slippage
B. Fatique and Rutting
C. Fatique and shear
D. Rutting and shear
Answer : B
Solution :
As per IRC66:2012
23.Which one of the options contains ONLY primary air pollutants?
A. Ozone and peroxyacetyl nitrate
B. Nitrogen oxides and peroxyacetyl nitrate
C. Hydrocarbons and nitrogen oxides
D. Hydrocarbons and ozone
Answer : C
Solution :
Ozone and PAN are secondary air pollutants.
24.The following inequality is true for all x close to 0.
What is the value of
A. 2
B. 1/2
C. 0
16
D. 1
Answer : A
Solution :
It is form
L?s hospital rule (differentiate)
Putting 0 everywhere ? still form.
Differentiating numerator and denominator again,
25.The velocity field in a flow system is given by v = 2i + (x + y)j + (xyz)k. The acceleration
of the fluid at (1, 1, 2) is
A. j + k
B. 2i + 10 k
C. 4j + 10k
D. 4i + 12 k
Answer : C
Solution :
17
and
= 2 + (x + y) + (xyz)(0) + 0
and
= 2(yz) + (x + y)(xz) + (xyz)(xy) + 0
az = 2(1 ? 2) + (1 + 1)(1 ? 2) + (1 ? 1
? 2) (1?1)
= 10k
Therefore,
26.A steel column is restrained against both translation and rotation at one end and is
restrained only against rotation but free to translate at the other end. Theoretical and design
(IS: 800 ? 2007) values, respectively, of effective length factor of the column are
18
A. 1.0 and 1.0
B. 1.2 and 1.0
C. 1.2 and 1.2
D. 1.0 and 1.2
Answer : D
Solution :
As per IS:800-2007
27.Euclindean norm (length) of the vector [4 ?2 ? 6]
T
is
A. ?48
B. ?24
C. ?12
D. ?56
Answer : D
Solution :
The Euclidean norm assigns to each vector the length of its arrow. Because of this,
the Euclidean norm is often known as the magnitude. So,
Length
28.An inflow hydrograph is routed through a reservoir to produce an outflow hydrograph.
The peak flow of the inflow hydrograph is PI and the time of occurrence of the peak is tI. The
peak flow of the outflow hydrograph is P0 and the time of occurance of the peak is t0. Which
one of the following statements is correct?
A. PI < P0 and tI > t0
B. PI > P0 and tI > t0
C. PI < P0 and tI < t0
D. PI > P0 and tI < t0
Answer : D
Solution :
19
Pl > Po ; tl < to
29.Construction of a new building founded on a clayey soil was completed in January In
January 2014, the average consolidation settlement of the foundation in clay was recorded as
10 mm. The ultimate consolidation settlement was estimated in design as 40 mm.
Considering double drainage to occur at the clayey soil site, the expected consolidation
settlement in January 2019 (in mm, round off to the nearest integer) will be _____________
Answer :
Solution :
Ultimate consolidation = 40 mm
Recorded consolidation = 10 mm
? Total recorded consolidation
? 40 ? 0.375
20
30.The notation ?SC? as per Indian standard Soil Classification System refers to
A. Clayey silt
B. Sandy clay
C. Calyey sand
D. Silty clay
Answer : C
Solution :
SC : clayey sand
31.The speed-density relationship in a mid-block section of a highway follows the
Greenshield?s model. If the free flow speed is vf and the jam density is kj, the maximum flow
observed on this ection is
A.
B.
C. fvkj
D.
Answer : D
Solution :
?(1)
21
32.An anisotropic soil deposit has coefficient of permeability in vertical and horizontal
directions as kz and kx, respectively. For constructing a flow net, the horizontal dimension of
the problem?s geometry is transformed by a multiplying factor of
A.
B.
C.
D.
Answer : C
Solution :
Flow net for anisotropic soil.
?(i)
If we transformed geometry in x direction let x cordinate be transformed to the new
coordinate xt by the transformation.
22
?(ii)
From eq. (i) & (ii),
Hence prove
So, multiplied factor
33.The Laplace transform of sinh (at) is
A.
B.
C.
D.
Answer : C
Solution :
Laplace transform of sinh (at) =
23
34.The data from a closed traverse survey PQRS (run in the clockwise direction) are given in
the table
The closing error for the traverse PQRS (in degrees) is________
Answer :
Solution :
n = 4 (number of sides of closed traverse)
(2n ? 4) ? 90? = 360?
so, error in included angle
= (88 + 92 + 94 + 89) ? 360 = +3?
35.A vehicle is moving on a road of grade +4% at a speed of 20 m/s. Consider the coefficient
of rolling friction as 0.46 and acceleration due to gravity as 10 m/s
2
. On applying brakes to
reach a speed of 10 m/s, the required braking distance (in m, round off to nearest integer)
along the horizontal, is ______.
Answer :
Solution :
Given: grade = +4%
V1 = 20 m/sec.
f = 0.46
g = 10 m/sec.
V1 = 10 m/sec.
24
We know,
36.A broad gauge railway line passes through a horizontal curved section (radius = 875 m) of
length 200 m. The allowable speed on this portion is 100 km/h. For calculating the cant,
consider the gauge as centre-to-centre distance between the rail heads, equal to 1750mm, The
maximum permissible cant (in mm, round off to 1 decimal place) with respect to the centreto-
centre distance between the rail heads is ______.
Answer :
Solution :
Given data:
R = 875 mm
Allowable speed = 100 kmph
Gauge length G = 1750 mm
Allowable cant
37.When a specimen of M25 concrete is loaded to a stress level of 12.5 MPa, a strain of 500
? 10
?6
is recorded. If this load is allowed to stand for a long time, the strain increases to 1000
? 10
?6
. In accordance with provisions of IS: 456-2000, considering the long-term effects, the
effective modulus of elasticity of the concrete (in MPa) is ________
Answer :
Solution :
25
Short term strain = 500 ? 10
?6
Long term strain = 1000 ? 10
?6
So, creep coefficient,
? = 1
Long-term effective modulus
= 12500 N/mm
2
= 12500 MPa
or
38.The probability density function of a continuous random variable distributed uniformly
between x and y (for y > x) is
A.
B. x ? y
C. y ? x
D.
Answer : D
Solution :
Probability density function of a uniformly distributed random variable.
26
39.The uniform arrival and uniform service rates observed on an approach road to a
signalized intersection are 20 and 50 vehicles/minutes, respectively. For this signal, the red
time is 30 s, the effective green time is 30 s, and the cycle length is 60s. Assuming that
initially there are no vehicles in the queue, the average delay per vehicle using the approach
road during a cycle length (in s, round off to 2 decimal places) is _______
Answer :
Solution :
Average delay per vehicle
= 12.5 sec
40.A rolled I-section beam is supported on a 75 mm wide bearing plate as shown in the
figure. Thickness of flange and web of the I-section are 20 mm and 8mm, respectively. Root
27
radius of the I-section is 10mm. Assuming: material yield stress,
fy = 250 MPa and partial safety factor for material, ?mo = 1.10
As per IS: 800-2007, the web bearing strength (in kN, round off to 2 decimal places) of the
beam is _______
Answer :
Solution :
Effective area in bearing = [75 + 2.5 (flange thickness + root radius)] ? 8
= [75 + 2.5 (20 + 10)] ? 8
= 1200 mm
2
so, web bearing strength
= 272.73 kN
41.The critical bending compressive stress in the extreme fibre of a structural steel section is
1000 MPa. It is given that the yield strength of the steel is 250 MPa, width of flange is 250
mm and thickness of flange is 15 mm. As per the provisions of IS: 800-2007, the
nondimensional slendeness ratio of the steel crosssection is
28
A. 0.50
B. 2.00
C. 0.25
D. 0.75
Answer : A
Solution :
Non-dimensional slenderness ratio
42.At the foot of a spillyway, water flows at a depth of 23 cm with a velocity of 8.1 m/s, as
shown in the figure.
The flow enters as an M-3 profile in the long wide rectangular channel with bed
slope and Manning?s n = 0.A hydraulic jump is formed at a certain distance from
the foot of the spillway. Assume the acceleration due to gravity, g = 9.81 m/s
2
. Just before the
hydraulic jump, the depth of flow y1 (in m, round off to 2 decimal places) is _________
Answer :
Solution :
Given data:
y = 0.23 m
V = 8.1 m/sec.
Slope,
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2
GATE CE 2019 Set 2: Questions & Solutions
General Aptitude
1.Daytime temperature in Delhi can ______ 40?C
A. Peak
B. reach
C. get
D. stand
Answer : B
Solution :
Daytime temperature in Delhi can reach 40?C
2.The growth rate of ABC Motors in 2017 was the same ________ XYZ Motors in 2016 .
A. As those of
B. As that off
C. As that of
D. As off
Answer : C
Solution :
The growth rate of ABC Motors in 2017 was the same as that of XYZ Motors in 2016.
3.Suresh wanted to lay a new carpet in his new mansion with an area of 70 55 sq. mts.
However an area of 550 sq. mts had to be left out for flower pots. If the cost of carpet is Rs.
50 per sq. mts, how much money (in Rs.) will be spent by Suresh for the carpet now?
A. Rs. 1,65,000
B. Rs. 1,92,500
C. Rs. 1,27,500
D. Rs. 2,75,000
Answer : A
3
Solution :
Area of mansion = 70 ? 55 = 3850 m
2
Area for flower pots = 550 m
2
? Area left for carpet = 3850 ? 550 = 3300m
2
? Cost = 3300 ? 50 = 165000
4.A retaining wall with measurements 30 m ? 12 m ? 6 m was constructed with bricks of
dimensions 8 cm ? 6 cm. If 60% of the wall consists of bricks used for the construction is
___________ lakhs.
A. 45
B. 30
C. 40
D. 75
Answer : A
Solution :
Volume of wall = 30 ? 12 ? 6 = 2160 m
3
= 2160 ? 106 cm
3
Total volume of bricks required = 2160 ? 106 ? 0.6 cm
3
= 1296 ? 106 cm
3
Volume of one brick = 8 ? 6 ? 6 = 288 cm
3
? No. of bricks required
= 4.5 ? 10
6
= 45 lakhs
5.Hima Das was _______ only Indian athlete to win _____________ gold for India.
A. the, many
B. an, the
C. an, a
4
D. the, a
Answer : D
Solution :
Hima Das was the only Indian athlete to win a gold for India.
6.Population of state X increased by x% and the population of state Y increased by y% from
2001 to 2011. Assume that x is greater than y. Let P be the ratio of the population of state X
to state Y in a given year. The percentage increase in P from 2001 to 2011 is_____________
A. x ? y
B.
C.
D.
Answer : C
Solution :
Let population of X is ?A? in 2001
and Population of Y is ?B? in 2001
? Population of A in 2011
& Population of B in 2011
Given,
5
% increase in P
7.The Newspaper report that over 500 hectares of tribal land spread across 28 tribal
settlements in Mohinitampuram forest division have already been ?alienated?. A top forest
official said, ?First the tribals are duped out of their land holdings. Second, the families thus
rendered landless are often forced to encroach further into the forests?.
On the basis of the information available in the paragraph, _______ is/are responsible for
duping the tribals.
A. The newspaper
B. Landless families
C. forest officials
D. it cannot be inferred who
Answer : D
Solution :
?it cannot be inferred who?
From given information, nobody can be held responsible.
8.An oil tank can be filled by pipe X in 5 hours and pipe Y in 4 hours, each pump working on
its own. When the oil tank is full and the drainage hole is open, the oil is drained in 20 hours.
6
If initially the tank was empty and someone started the two pumps together but left the
drainage hole open, how many hours will it tak for the tank to be filled? (Assume that the rate
of drainage is independent of the head)
A. 2.50
B. 1.50
C. 2.00
D. 4.00
Answer : A
Solution :
Pipe X will fill how much in one hour tank
Pipe Y will fill how much in one hour tank
Drainage will drain out how much water in 1 hour tank
? Total tank filled in one hour
tank gets filled in = 1 hour
? Full (i) tank gets filled in
9.Mohan, the manager, wants his four workers to work in pairs. No paper should work for
more than 5 hours. Ram and Johan have worked together for 5 hours. Krishna and Amir have
7
worked as a team for 2 hours. Krishan does not want to work with Ram whom should mohan
allot to work with Johan, if we wants all the workers to continue working?
A. Amir
B. Krishna
C. Ram
D. None of the three
Answer : B
Solution :
Conditions given:
(i) Ram & John have worked for 5 hours.
(ii) Krishna doesn?t want to work with Ram.
(iii) No pair should work beyond 5 hours.
Hence, Krishna should work with John to satisfy the above conditions.
10.?Popular Hindi fiction, despite ? or perhaps because of ? its wide reach, often does not
appear in our cinema. As ideals that viewers are meant to look up to rather than identify with,
Hindi film protagonisits usually read books of apsirational value: textbooks, English books,
or high value literature?.
Which one of the following CANNOT be inferred from the paragraph above?
A. Textbooks, English books or high literature have apsirational value, but not popular Hindi
fiction
B. People do not look up to writers of textbooks, English book or high value literature
C. Though popular hindi fiction was wide readh, it often does not appear in the movies
D. Protagonists in Hindi movies, being ideals for viewers, read only books of aspirational
value.
Answer : B
Solution :
People do not look up to writers of textbooks, English book or high value literature.
8
Civil Engineering
11.What is curl of the vector field 2x
2
yi + 5z
2
j - 4yzk?
A. - 14zi - 2x
2
k
B. 6zi + 4xj - 2x
2
k
C. 6zi + 8xyj + 2x
2
yk
D. -14zi + 6yj + 2x
2
k
Answer : A
Solution :
12.Analysis of a water sample revealed that the sample contains the following species.
9
Concentrations of which of the species will be required to compute alkalinity?
A.
B.
C.
D.
Answer : A
Solution :
H2CO3 and HCO3
-
never come together
13.The value of the function f(x) is given at n distinct values of x and its value is to be
interpolated at the point x
*
using all the n points. The estimate is obtained first by the
Lagrange polynomial, denoted by IL, and then by the Newton polynomial, denoted by IN.
Which one of the following statements is correct?
A. IL is always greater than IN
B. No definite relation exists between IL and IN.
C. IL is always less than IN
D. IL and IN are always equal
Answer : B
Solution :
Lagrange?s form is more efficient when you have to interpolate several data sets on the same
data point.
Newton?s form is more efficient when you have to interpolate data incrementally. So no
relationship between both.
14.If the fineness modulus of a sample of the fine aggregates is 4.3, the mean size of the
particles in the sample is between
10
A. 150 ?m and 300 ?m
B. 2.36 mm and 4.75 mm
C. 300 ?m and 600 ?m
D. 1.18 mm and 2.36 mm
Answer : D
Solution :
150 ?m, 300 ?m, 600 ?m, 1.18 mm,
2.36 mm, 4.75 mm, 10 mm, 20 mm,
40 mm, 80 mm
150 ? 1
300 ? 2
600 ? 3
4.75 - 6
15.The command area of a canal grows only one crop, i.e., wheat. The base period of wheat
is 120 days and its total water requirement, ?, is 40 cm. If the canal discharge is 2 m
3
/s, the
area, in hectares, rounded off to the nearest integer, which could be irrigated (neglecting all
losses) is ______________
Answer :
Solution :
B = 120 days
? = 0.4 m
and ? = 8.64B/D
? D = 2592 ha per (m
3
/s)
? For 2m
3
/sec water, area will be 5184 ha
11
16.The characteristic compressive strength of concrete required in a project is 25 MPa and
standard deviation in the observed compressive strength expected at site is 4 MPa. The
average compressive strength of cubes tested at different water-cement (w/c) ratios using the
same material as is used for the project is given in the table.
The water-cement ratio (in percent, round off to the lower integer) to be used in the mix
is________
Answer :
Solution :
fck = 25 ; ? = 4 MPa
fm = fck + 1.65? = 31.6 MPa
Using interpolation
= 46.7 (Rounded off to the lowest integer).
17.A solid sphere of radius, r, and made of material with density ?s, is moving through the
atmosphere (constant pressure, p) with a velocity, ?. The net force ONLY due to atmospheric
pressure (Fp) acting on the sphere at any time, t, is
A.
B. Zero
C. ?r
2
p
D. 4?r
2
p
Answer : B
Solution :
Force = area ? P
12
Net force will be zero as pressure acts from all sides.
18.An earthen dam of height H is made of cohesive soil whose cohesion and unit weight are c
and ?, respectively. If the factor of safety against cohesion is Fc, the Taylor?s stability
A.
B.
C.
D.
Answer : C
Solution :
Taylor?s stability number,
19.A closed thin walled tube has thickness, t, mean enclosed area within the boundary of the
centrline of tube?s thickness, Am, and shear stress ?. Torsional moment of resistance, T of the
section would be
A.
B.
13
C.
D.
Answer : A
Solution :
20.For a channel section subjected to a downward vertical shear force at its centroid, which
one of the following represents the correct distribution of shear stress in flange and web?
A.
B.
C.
14
D.
Answer : C
Solution :
Standard result
21.The degree of static indeterminancy of the plane frame is shown in the figure is ________
Answer :
Solution :
Ds = 3C ? R'
C = 6
Ds = (3 ? 6 ? 2) ? 1 (due to hinge)
= 15
15
22.Structural failures considered in the mechanistic method of bituminous pavement design
are
A. Shear and slippage
B. Fatique and Rutting
C. Fatique and shear
D. Rutting and shear
Answer : B
Solution :
As per IRC66:2012
23.Which one of the options contains ONLY primary air pollutants?
A. Ozone and peroxyacetyl nitrate
B. Nitrogen oxides and peroxyacetyl nitrate
C. Hydrocarbons and nitrogen oxides
D. Hydrocarbons and ozone
Answer : C
Solution :
Ozone and PAN are secondary air pollutants.
24.The following inequality is true for all x close to 0.
What is the value of
A. 2
B. 1/2
C. 0
16
D. 1
Answer : A
Solution :
It is form
L?s hospital rule (differentiate)
Putting 0 everywhere ? still form.
Differentiating numerator and denominator again,
25.The velocity field in a flow system is given by v = 2i + (x + y)j + (xyz)k. The acceleration
of the fluid at (1, 1, 2) is
A. j + k
B. 2i + 10 k
C. 4j + 10k
D. 4i + 12 k
Answer : C
Solution :
17
and
= 2 + (x + y) + (xyz)(0) + 0
and
= 2(yz) + (x + y)(xz) + (xyz)(xy) + 0
az = 2(1 ? 2) + (1 + 1)(1 ? 2) + (1 ? 1
? 2) (1?1)
= 10k
Therefore,
26.A steel column is restrained against both translation and rotation at one end and is
restrained only against rotation but free to translate at the other end. Theoretical and design
(IS: 800 ? 2007) values, respectively, of effective length factor of the column are
18
A. 1.0 and 1.0
B. 1.2 and 1.0
C. 1.2 and 1.2
D. 1.0 and 1.2
Answer : D
Solution :
As per IS:800-2007
27.Euclindean norm (length) of the vector [4 ?2 ? 6]
T
is
A. ?48
B. ?24
C. ?12
D. ?56
Answer : D
Solution :
The Euclidean norm assigns to each vector the length of its arrow. Because of this,
the Euclidean norm is often known as the magnitude. So,
Length
28.An inflow hydrograph is routed through a reservoir to produce an outflow hydrograph.
The peak flow of the inflow hydrograph is PI and the time of occurrence of the peak is tI. The
peak flow of the outflow hydrograph is P0 and the time of occurance of the peak is t0. Which
one of the following statements is correct?
A. PI < P0 and tI > t0
B. PI > P0 and tI > t0
C. PI < P0 and tI < t0
D. PI > P0 and tI < t0
Answer : D
Solution :
19
Pl > Po ; tl < to
29.Construction of a new building founded on a clayey soil was completed in January In
January 2014, the average consolidation settlement of the foundation in clay was recorded as
10 mm. The ultimate consolidation settlement was estimated in design as 40 mm.
Considering double drainage to occur at the clayey soil site, the expected consolidation
settlement in January 2019 (in mm, round off to the nearest integer) will be _____________
Answer :
Solution :
Ultimate consolidation = 40 mm
Recorded consolidation = 10 mm
? Total recorded consolidation
? 40 ? 0.375
20
30.The notation ?SC? as per Indian standard Soil Classification System refers to
A. Clayey silt
B. Sandy clay
C. Calyey sand
D. Silty clay
Answer : C
Solution :
SC : clayey sand
31.The speed-density relationship in a mid-block section of a highway follows the
Greenshield?s model. If the free flow speed is vf and the jam density is kj, the maximum flow
observed on this ection is
A.
B.
C. fvkj
D.
Answer : D
Solution :
?(1)
21
32.An anisotropic soil deposit has coefficient of permeability in vertical and horizontal
directions as kz and kx, respectively. For constructing a flow net, the horizontal dimension of
the problem?s geometry is transformed by a multiplying factor of
A.
B.
C.
D.
Answer : C
Solution :
Flow net for anisotropic soil.
?(i)
If we transformed geometry in x direction let x cordinate be transformed to the new
coordinate xt by the transformation.
22
?(ii)
From eq. (i) & (ii),
Hence prove
So, multiplied factor
33.The Laplace transform of sinh (at) is
A.
B.
C.
D.
Answer : C
Solution :
Laplace transform of sinh (at) =
23
34.The data from a closed traverse survey PQRS (run in the clockwise direction) are given in
the table
The closing error for the traverse PQRS (in degrees) is________
Answer :
Solution :
n = 4 (number of sides of closed traverse)
(2n ? 4) ? 90? = 360?
so, error in included angle
= (88 + 92 + 94 + 89) ? 360 = +3?
35.A vehicle is moving on a road of grade +4% at a speed of 20 m/s. Consider the coefficient
of rolling friction as 0.46 and acceleration due to gravity as 10 m/s
2
. On applying brakes to
reach a speed of 10 m/s, the required braking distance (in m, round off to nearest integer)
along the horizontal, is ______.
Answer :
Solution :
Given: grade = +4%
V1 = 20 m/sec.
f = 0.46
g = 10 m/sec.
V1 = 10 m/sec.
24
We know,
36.A broad gauge railway line passes through a horizontal curved section (radius = 875 m) of
length 200 m. The allowable speed on this portion is 100 km/h. For calculating the cant,
consider the gauge as centre-to-centre distance between the rail heads, equal to 1750mm, The
maximum permissible cant (in mm, round off to 1 decimal place) with respect to the centreto-
centre distance between the rail heads is ______.
Answer :
Solution :
Given data:
R = 875 mm
Allowable speed = 100 kmph
Gauge length G = 1750 mm
Allowable cant
37.When a specimen of M25 concrete is loaded to a stress level of 12.5 MPa, a strain of 500
? 10
?6
is recorded. If this load is allowed to stand for a long time, the strain increases to 1000
? 10
?6
. In accordance with provisions of IS: 456-2000, considering the long-term effects, the
effective modulus of elasticity of the concrete (in MPa) is ________
Answer :
Solution :
25
Short term strain = 500 ? 10
?6
Long term strain = 1000 ? 10
?6
So, creep coefficient,
? = 1
Long-term effective modulus
= 12500 N/mm
2
= 12500 MPa
or
38.The probability density function of a continuous random variable distributed uniformly
between x and y (for y > x) is
A.
B. x ? y
C. y ? x
D.
Answer : D
Solution :
Probability density function of a uniformly distributed random variable.
26
39.The uniform arrival and uniform service rates observed on an approach road to a
signalized intersection are 20 and 50 vehicles/minutes, respectively. For this signal, the red
time is 30 s, the effective green time is 30 s, and the cycle length is 60s. Assuming that
initially there are no vehicles in the queue, the average delay per vehicle using the approach
road during a cycle length (in s, round off to 2 decimal places) is _______
Answer :
Solution :
Average delay per vehicle
= 12.5 sec
40.A rolled I-section beam is supported on a 75 mm wide bearing plate as shown in the
figure. Thickness of flange and web of the I-section are 20 mm and 8mm, respectively. Root
27
radius of the I-section is 10mm. Assuming: material yield stress,
fy = 250 MPa and partial safety factor for material, ?mo = 1.10
As per IS: 800-2007, the web bearing strength (in kN, round off to 2 decimal places) of the
beam is _______
Answer :
Solution :
Effective area in bearing = [75 + 2.5 (flange thickness + root radius)] ? 8
= [75 + 2.5 (20 + 10)] ? 8
= 1200 mm
2
so, web bearing strength
= 272.73 kN
41.The critical bending compressive stress in the extreme fibre of a structural steel section is
1000 MPa. It is given that the yield strength of the steel is 250 MPa, width of flange is 250
mm and thickness of flange is 15 mm. As per the provisions of IS: 800-2007, the
nondimensional slendeness ratio of the steel crosssection is
28
A. 0.50
B. 2.00
C. 0.25
D. 0.75
Answer : A
Solution :
Non-dimensional slenderness ratio
42.At the foot of a spillyway, water flows at a depth of 23 cm with a velocity of 8.1 m/s, as
shown in the figure.
The flow enters as an M-3 profile in the long wide rectangular channel with bed
slope and Manning?s n = 0.A hydraulic jump is formed at a certain distance from
the foot of the spillway. Assume the acceleration due to gravity, g = 9.81 m/s
2
. Just before the
hydraulic jump, the depth of flow y1 (in m, round off to 2 decimal places) is _________
Answer :
Solution :
Given data:
y = 0.23 m
V = 8.1 m/sec.
Slope,
29
h = 0.015
g = 9.81 m/sec
2
q = yV = 8.1 ? 0.23
= 1.863 m
3
/sec/m
It is given that flow enters as an M-3 profile in the long wide rectangular channel with bed
slope
From manning equation at M3 profile section.
[for wide channel R = y]
The flow profile will follow normal depth (yn) after jump.
For wide rectangular channel,
Here, yn = y 2 = 1.11 m
FirstRanker.com - FirstRanker's Choice
2
GATE CE 2019 Set 2: Questions & Solutions
General Aptitude
1.Daytime temperature in Delhi can ______ 40?C
A. Peak
B. reach
C. get
D. stand
Answer : B
Solution :
Daytime temperature in Delhi can reach 40?C
2.The growth rate of ABC Motors in 2017 was the same ________ XYZ Motors in 2016 .
A. As those of
B. As that off
C. As that of
D. As off
Answer : C
Solution :
The growth rate of ABC Motors in 2017 was the same as that of XYZ Motors in 2016.
3.Suresh wanted to lay a new carpet in his new mansion with an area of 70 55 sq. mts.
However an area of 550 sq. mts had to be left out for flower pots. If the cost of carpet is Rs.
50 per sq. mts, how much money (in Rs.) will be spent by Suresh for the carpet now?
A. Rs. 1,65,000
B. Rs. 1,92,500
C. Rs. 1,27,500
D. Rs. 2,75,000
Answer : A
3
Solution :
Area of mansion = 70 ? 55 = 3850 m
2
Area for flower pots = 550 m
2
? Area left for carpet = 3850 ? 550 = 3300m
2
? Cost = 3300 ? 50 = 165000
4.A retaining wall with measurements 30 m ? 12 m ? 6 m was constructed with bricks of
dimensions 8 cm ? 6 cm. If 60% of the wall consists of bricks used for the construction is
___________ lakhs.
A. 45
B. 30
C. 40
D. 75
Answer : A
Solution :
Volume of wall = 30 ? 12 ? 6 = 2160 m
3
= 2160 ? 106 cm
3
Total volume of bricks required = 2160 ? 106 ? 0.6 cm
3
= 1296 ? 106 cm
3
Volume of one brick = 8 ? 6 ? 6 = 288 cm
3
? No. of bricks required
= 4.5 ? 10
6
= 45 lakhs
5.Hima Das was _______ only Indian athlete to win _____________ gold for India.
A. the, many
B. an, the
C. an, a
4
D. the, a
Answer : D
Solution :
Hima Das was the only Indian athlete to win a gold for India.
6.Population of state X increased by x% and the population of state Y increased by y% from
2001 to 2011. Assume that x is greater than y. Let P be the ratio of the population of state X
to state Y in a given year. The percentage increase in P from 2001 to 2011 is_____________
A. x ? y
B.
C.
D.
Answer : C
Solution :
Let population of X is ?A? in 2001
and Population of Y is ?B? in 2001
? Population of A in 2011
& Population of B in 2011
Given,
5
% increase in P
7.The Newspaper report that over 500 hectares of tribal land spread across 28 tribal
settlements in Mohinitampuram forest division have already been ?alienated?. A top forest
official said, ?First the tribals are duped out of their land holdings. Second, the families thus
rendered landless are often forced to encroach further into the forests?.
On the basis of the information available in the paragraph, _______ is/are responsible for
duping the tribals.
A. The newspaper
B. Landless families
C. forest officials
D. it cannot be inferred who
Answer : D
Solution :
?it cannot be inferred who?
From given information, nobody can be held responsible.
8.An oil tank can be filled by pipe X in 5 hours and pipe Y in 4 hours, each pump working on
its own. When the oil tank is full and the drainage hole is open, the oil is drained in 20 hours.
6
If initially the tank was empty and someone started the two pumps together but left the
drainage hole open, how many hours will it tak for the tank to be filled? (Assume that the rate
of drainage is independent of the head)
A. 2.50
B. 1.50
C. 2.00
D. 4.00
Answer : A
Solution :
Pipe X will fill how much in one hour tank
Pipe Y will fill how much in one hour tank
Drainage will drain out how much water in 1 hour tank
? Total tank filled in one hour
tank gets filled in = 1 hour
? Full (i) tank gets filled in
9.Mohan, the manager, wants his four workers to work in pairs. No paper should work for
more than 5 hours. Ram and Johan have worked together for 5 hours. Krishna and Amir have
7
worked as a team for 2 hours. Krishan does not want to work with Ram whom should mohan
allot to work with Johan, if we wants all the workers to continue working?
A. Amir
B. Krishna
C. Ram
D. None of the three
Answer : B
Solution :
Conditions given:
(i) Ram & John have worked for 5 hours.
(ii) Krishna doesn?t want to work with Ram.
(iii) No pair should work beyond 5 hours.
Hence, Krishna should work with John to satisfy the above conditions.
10.?Popular Hindi fiction, despite ? or perhaps because of ? its wide reach, often does not
appear in our cinema. As ideals that viewers are meant to look up to rather than identify with,
Hindi film protagonisits usually read books of apsirational value: textbooks, English books,
or high value literature?.
Which one of the following CANNOT be inferred from the paragraph above?
A. Textbooks, English books or high literature have apsirational value, but not popular Hindi
fiction
B. People do not look up to writers of textbooks, English book or high value literature
C. Though popular hindi fiction was wide readh, it often does not appear in the movies
D. Protagonists in Hindi movies, being ideals for viewers, read only books of aspirational
value.
Answer : B
Solution :
People do not look up to writers of textbooks, English book or high value literature.
8
Civil Engineering
11.What is curl of the vector field 2x
2
yi + 5z
2
j - 4yzk?
A. - 14zi - 2x
2
k
B. 6zi + 4xj - 2x
2
k
C. 6zi + 8xyj + 2x
2
yk
D. -14zi + 6yj + 2x
2
k
Answer : A
Solution :
12.Analysis of a water sample revealed that the sample contains the following species.
9
Concentrations of which of the species will be required to compute alkalinity?
A.
B.
C.
D.
Answer : A
Solution :
H2CO3 and HCO3
-
never come together
13.The value of the function f(x) is given at n distinct values of x and its value is to be
interpolated at the point x
*
using all the n points. The estimate is obtained first by the
Lagrange polynomial, denoted by IL, and then by the Newton polynomial, denoted by IN.
Which one of the following statements is correct?
A. IL is always greater than IN
B. No definite relation exists between IL and IN.
C. IL is always less than IN
D. IL and IN are always equal
Answer : B
Solution :
Lagrange?s form is more efficient when you have to interpolate several data sets on the same
data point.
Newton?s form is more efficient when you have to interpolate data incrementally. So no
relationship between both.
14.If the fineness modulus of a sample of the fine aggregates is 4.3, the mean size of the
particles in the sample is between
10
A. 150 ?m and 300 ?m
B. 2.36 mm and 4.75 mm
C. 300 ?m and 600 ?m
D. 1.18 mm and 2.36 mm
Answer : D
Solution :
150 ?m, 300 ?m, 600 ?m, 1.18 mm,
2.36 mm, 4.75 mm, 10 mm, 20 mm,
40 mm, 80 mm
150 ? 1
300 ? 2
600 ? 3
4.75 - 6
15.The command area of a canal grows only one crop, i.e., wheat. The base period of wheat
is 120 days and its total water requirement, ?, is 40 cm. If the canal discharge is 2 m
3
/s, the
area, in hectares, rounded off to the nearest integer, which could be irrigated (neglecting all
losses) is ______________
Answer :
Solution :
B = 120 days
? = 0.4 m
and ? = 8.64B/D
? D = 2592 ha per (m
3
/s)
? For 2m
3
/sec water, area will be 5184 ha
11
16.The characteristic compressive strength of concrete required in a project is 25 MPa and
standard deviation in the observed compressive strength expected at site is 4 MPa. The
average compressive strength of cubes tested at different water-cement (w/c) ratios using the
same material as is used for the project is given in the table.
The water-cement ratio (in percent, round off to the lower integer) to be used in the mix
is________
Answer :
Solution :
fck = 25 ; ? = 4 MPa
fm = fck + 1.65? = 31.6 MPa
Using interpolation
= 46.7 (Rounded off to the lowest integer).
17.A solid sphere of radius, r, and made of material with density ?s, is moving through the
atmosphere (constant pressure, p) with a velocity, ?. The net force ONLY due to atmospheric
pressure (Fp) acting on the sphere at any time, t, is
A.
B. Zero
C. ?r
2
p
D. 4?r
2
p
Answer : B
Solution :
Force = area ? P
12
Net force will be zero as pressure acts from all sides.
18.An earthen dam of height H is made of cohesive soil whose cohesion and unit weight are c
and ?, respectively. If the factor of safety against cohesion is Fc, the Taylor?s stability
A.
B.
C.
D.
Answer : C
Solution :
Taylor?s stability number,
19.A closed thin walled tube has thickness, t, mean enclosed area within the boundary of the
centrline of tube?s thickness, Am, and shear stress ?. Torsional moment of resistance, T of the
section would be
A.
B.
13
C.
D.
Answer : A
Solution :
20.For a channel section subjected to a downward vertical shear force at its centroid, which
one of the following represents the correct distribution of shear stress in flange and web?
A.
B.
C.
14
D.
Answer : C
Solution :
Standard result
21.The degree of static indeterminancy of the plane frame is shown in the figure is ________
Answer :
Solution :
Ds = 3C ? R'
C = 6
Ds = (3 ? 6 ? 2) ? 1 (due to hinge)
= 15
15
22.Structural failures considered in the mechanistic method of bituminous pavement design
are
A. Shear and slippage
B. Fatique and Rutting
C. Fatique and shear
D. Rutting and shear
Answer : B
Solution :
As per IRC66:2012
23.Which one of the options contains ONLY primary air pollutants?
A. Ozone and peroxyacetyl nitrate
B. Nitrogen oxides and peroxyacetyl nitrate
C. Hydrocarbons and nitrogen oxides
D. Hydrocarbons and ozone
Answer : C
Solution :
Ozone and PAN are secondary air pollutants.
24.The following inequality is true for all x close to 0.
What is the value of
A. 2
B. 1/2
C. 0
16
D. 1
Answer : A
Solution :
It is form
L?s hospital rule (differentiate)
Putting 0 everywhere ? still form.
Differentiating numerator and denominator again,
25.The velocity field in a flow system is given by v = 2i + (x + y)j + (xyz)k. The acceleration
of the fluid at (1, 1, 2) is
A. j + k
B. 2i + 10 k
C. 4j + 10k
D. 4i + 12 k
Answer : C
Solution :
17
and
= 2 + (x + y) + (xyz)(0) + 0
and
= 2(yz) + (x + y)(xz) + (xyz)(xy) + 0
az = 2(1 ? 2) + (1 + 1)(1 ? 2) + (1 ? 1
? 2) (1?1)
= 10k
Therefore,
26.A steel column is restrained against both translation and rotation at one end and is
restrained only against rotation but free to translate at the other end. Theoretical and design
(IS: 800 ? 2007) values, respectively, of effective length factor of the column are
18
A. 1.0 and 1.0
B. 1.2 and 1.0
C. 1.2 and 1.2
D. 1.0 and 1.2
Answer : D
Solution :
As per IS:800-2007
27.Euclindean norm (length) of the vector [4 ?2 ? 6]
T
is
A. ?48
B. ?24
C. ?12
D. ?56
Answer : D
Solution :
The Euclidean norm assigns to each vector the length of its arrow. Because of this,
the Euclidean norm is often known as the magnitude. So,
Length
28.An inflow hydrograph is routed through a reservoir to produce an outflow hydrograph.
The peak flow of the inflow hydrograph is PI and the time of occurrence of the peak is tI. The
peak flow of the outflow hydrograph is P0 and the time of occurance of the peak is t0. Which
one of the following statements is correct?
A. PI < P0 and tI > t0
B. PI > P0 and tI > t0
C. PI < P0 and tI < t0
D. PI > P0 and tI < t0
Answer : D
Solution :
19
Pl > Po ; tl < to
29.Construction of a new building founded on a clayey soil was completed in January In
January 2014, the average consolidation settlement of the foundation in clay was recorded as
10 mm. The ultimate consolidation settlement was estimated in design as 40 mm.
Considering double drainage to occur at the clayey soil site, the expected consolidation
settlement in January 2019 (in mm, round off to the nearest integer) will be _____________
Answer :
Solution :
Ultimate consolidation = 40 mm
Recorded consolidation = 10 mm
? Total recorded consolidation
? 40 ? 0.375
20
30.The notation ?SC? as per Indian standard Soil Classification System refers to
A. Clayey silt
B. Sandy clay
C. Calyey sand
D. Silty clay
Answer : C
Solution :
SC : clayey sand
31.The speed-density relationship in a mid-block section of a highway follows the
Greenshield?s model. If the free flow speed is vf and the jam density is kj, the maximum flow
observed on this ection is
A.
B.
C. fvkj
D.
Answer : D
Solution :
?(1)
21
32.An anisotropic soil deposit has coefficient of permeability in vertical and horizontal
directions as kz and kx, respectively. For constructing a flow net, the horizontal dimension of
the problem?s geometry is transformed by a multiplying factor of
A.
B.
C.
D.
Answer : C
Solution :
Flow net for anisotropic soil.
?(i)
If we transformed geometry in x direction let x cordinate be transformed to the new
coordinate xt by the transformation.
22
?(ii)
From eq. (i) & (ii),
Hence prove
So, multiplied factor
33.The Laplace transform of sinh (at) is
A.
B.
C.
D.
Answer : C
Solution :
Laplace transform of sinh (at) =
23
34.The data from a closed traverse survey PQRS (run in the clockwise direction) are given in
the table
The closing error for the traverse PQRS (in degrees) is________
Answer :
Solution :
n = 4 (number of sides of closed traverse)
(2n ? 4) ? 90? = 360?
so, error in included angle
= (88 + 92 + 94 + 89) ? 360 = +3?
35.A vehicle is moving on a road of grade +4% at a speed of 20 m/s. Consider the coefficient
of rolling friction as 0.46 and acceleration due to gravity as 10 m/s
2
. On applying brakes to
reach a speed of 10 m/s, the required braking distance (in m, round off to nearest integer)
along the horizontal, is ______.
Answer :
Solution :
Given: grade = +4%
V1 = 20 m/sec.
f = 0.46
g = 10 m/sec.
V1 = 10 m/sec.
24
We know,
36.A broad gauge railway line passes through a horizontal curved section (radius = 875 m) of
length 200 m. The allowable speed on this portion is 100 km/h. For calculating the cant,
consider the gauge as centre-to-centre distance between the rail heads, equal to 1750mm, The
maximum permissible cant (in mm, round off to 1 decimal place) with respect to the centreto-
centre distance between the rail heads is ______.
Answer :
Solution :
Given data:
R = 875 mm
Allowable speed = 100 kmph
Gauge length G = 1750 mm
Allowable cant
37.When a specimen of M25 concrete is loaded to a stress level of 12.5 MPa, a strain of 500
? 10
?6
is recorded. If this load is allowed to stand for a long time, the strain increases to 1000
? 10
?6
. In accordance with provisions of IS: 456-2000, considering the long-term effects, the
effective modulus of elasticity of the concrete (in MPa) is ________
Answer :
Solution :
25
Short term strain = 500 ? 10
?6
Long term strain = 1000 ? 10
?6
So, creep coefficient,
? = 1
Long-term effective modulus
= 12500 N/mm
2
= 12500 MPa
or
38.The probability density function of a continuous random variable distributed uniformly
between x and y (for y > x) is
A.
B. x ? y
C. y ? x
D.
Answer : D
Solution :
Probability density function of a uniformly distributed random variable.
26
39.The uniform arrival and uniform service rates observed on an approach road to a
signalized intersection are 20 and 50 vehicles/minutes, respectively. For this signal, the red
time is 30 s, the effective green time is 30 s, and the cycle length is 60s. Assuming that
initially there are no vehicles in the queue, the average delay per vehicle using the approach
road during a cycle length (in s, round off to 2 decimal places) is _______
Answer :
Solution :
Average delay per vehicle
= 12.5 sec
40.A rolled I-section beam is supported on a 75 mm wide bearing plate as shown in the
figure. Thickness of flange and web of the I-section are 20 mm and 8mm, respectively. Root
27
radius of the I-section is 10mm. Assuming: material yield stress,
fy = 250 MPa and partial safety factor for material, ?mo = 1.10
As per IS: 800-2007, the web bearing strength (in kN, round off to 2 decimal places) of the
beam is _______
Answer :
Solution :
Effective area in bearing = [75 + 2.5 (flange thickness + root radius)] ? 8
= [75 + 2.5 (20 + 10)] ? 8
= 1200 mm
2
so, web bearing strength
= 272.73 kN
41.The critical bending compressive stress in the extreme fibre of a structural steel section is
1000 MPa. It is given that the yield strength of the steel is 250 MPa, width of flange is 250
mm and thickness of flange is 15 mm. As per the provisions of IS: 800-2007, the
nondimensional slendeness ratio of the steel crosssection is
28
A. 0.50
B. 2.00
C. 0.25
D. 0.75
Answer : A
Solution :
Non-dimensional slenderness ratio
42.At the foot of a spillyway, water flows at a depth of 23 cm with a velocity of 8.1 m/s, as
shown in the figure.
The flow enters as an M-3 profile in the long wide rectangular channel with bed
slope and Manning?s n = 0.A hydraulic jump is formed at a certain distance from
the foot of the spillway. Assume the acceleration due to gravity, g = 9.81 m/s
2
. Just before the
hydraulic jump, the depth of flow y1 (in m, round off to 2 decimal places) is _________
Answer :
Solution :
Given data:
y = 0.23 m
V = 8.1 m/sec.
Slope,
29
h = 0.015
g = 9.81 m/sec
2
q = yV = 8.1 ? 0.23
= 1.863 m
3
/sec/m
It is given that flow enters as an M-3 profile in the long wide rectangular channel with bed
slope
From manning equation at M3 profile section.
[for wide channel R = y]
The flow profile will follow normal depth (yn) after jump.
For wide rectangular channel,
Here, yn = y 2 = 1.11 m
30
Again,
? y 1 = 0.417 m < y c [supercritical]
43.Consider the reactor shown in the figure. The concentration (in mg/l) of a compound in
the influent and effluent are C0 and C, flow rate through the reactor is Q m
3
/h respectively.
The compound is degraded in the reactor following the first order reactions. The mixing
condition of the reactor Complete Mix Flow Reactor (CMFR) or a plug-flow reactor (PFR).
The length of the reactor can be adjusted in these two mixing conditions to LCMFR and
LPER while keeping the cross-section of the reactor constant. Assuming steady state and for
C/C0 = 0.8, the value of LCMFR/LPER (round off to 2 decimal places) is _______
Answer :
Solution :
A = constant
Q = AL
For plug flow
[ detention time for plug flow reaction]
For completely mix = C =
[ detention time for completely mix reaction]
FirstRanker.com - FirstRanker's Choice
2
GATE CE 2019 Set 2: Questions & Solutions
General Aptitude
1.Daytime temperature in Delhi can ______ 40?C
A. Peak
B. reach
C. get
D. stand
Answer : B
Solution :
Daytime temperature in Delhi can reach 40?C
2.The growth rate of ABC Motors in 2017 was the same ________ XYZ Motors in 2016 .
A. As those of
B. As that off
C. As that of
D. As off
Answer : C
Solution :
The growth rate of ABC Motors in 2017 was the same as that of XYZ Motors in 2016.
3.Suresh wanted to lay a new carpet in his new mansion with an area of 70 55 sq. mts.
However an area of 550 sq. mts had to be left out for flower pots. If the cost of carpet is Rs.
50 per sq. mts, how much money (in Rs.) will be spent by Suresh for the carpet now?
A. Rs. 1,65,000
B. Rs. 1,92,500
C. Rs. 1,27,500
D. Rs. 2,75,000
Answer : A
3
Solution :
Area of mansion = 70 ? 55 = 3850 m
2
Area for flower pots = 550 m
2
? Area left for carpet = 3850 ? 550 = 3300m
2
? Cost = 3300 ? 50 = 165000
4.A retaining wall with measurements 30 m ? 12 m ? 6 m was constructed with bricks of
dimensions 8 cm ? 6 cm. If 60% of the wall consists of bricks used for the construction is
___________ lakhs.
A. 45
B. 30
C. 40
D. 75
Answer : A
Solution :
Volume of wall = 30 ? 12 ? 6 = 2160 m
3
= 2160 ? 106 cm
3
Total volume of bricks required = 2160 ? 106 ? 0.6 cm
3
= 1296 ? 106 cm
3
Volume of one brick = 8 ? 6 ? 6 = 288 cm
3
? No. of bricks required
= 4.5 ? 10
6
= 45 lakhs
5.Hima Das was _______ only Indian athlete to win _____________ gold for India.
A. the, many
B. an, the
C. an, a
4
D. the, a
Answer : D
Solution :
Hima Das was the only Indian athlete to win a gold for India.
6.Population of state X increased by x% and the population of state Y increased by y% from
2001 to 2011. Assume that x is greater than y. Let P be the ratio of the population of state X
to state Y in a given year. The percentage increase in P from 2001 to 2011 is_____________
A. x ? y
B.
C.
D.
Answer : C
Solution :
Let population of X is ?A? in 2001
and Population of Y is ?B? in 2001
? Population of A in 2011
& Population of B in 2011
Given,
5
% increase in P
7.The Newspaper report that over 500 hectares of tribal land spread across 28 tribal
settlements in Mohinitampuram forest division have already been ?alienated?. A top forest
official said, ?First the tribals are duped out of their land holdings. Second, the families thus
rendered landless are often forced to encroach further into the forests?.
On the basis of the information available in the paragraph, _______ is/are responsible for
duping the tribals.
A. The newspaper
B. Landless families
C. forest officials
D. it cannot be inferred who
Answer : D
Solution :
?it cannot be inferred who?
From given information, nobody can be held responsible.
8.An oil tank can be filled by pipe X in 5 hours and pipe Y in 4 hours, each pump working on
its own. When the oil tank is full and the drainage hole is open, the oil is drained in 20 hours.
6
If initially the tank was empty and someone started the two pumps together but left the
drainage hole open, how many hours will it tak for the tank to be filled? (Assume that the rate
of drainage is independent of the head)
A. 2.50
B. 1.50
C. 2.00
D. 4.00
Answer : A
Solution :
Pipe X will fill how much in one hour tank
Pipe Y will fill how much in one hour tank
Drainage will drain out how much water in 1 hour tank
? Total tank filled in one hour
tank gets filled in = 1 hour
? Full (i) tank gets filled in
9.Mohan, the manager, wants his four workers to work in pairs. No paper should work for
more than 5 hours. Ram and Johan have worked together for 5 hours. Krishna and Amir have
7
worked as a team for 2 hours. Krishan does not want to work with Ram whom should mohan
allot to work with Johan, if we wants all the workers to continue working?
A. Amir
B. Krishna
C. Ram
D. None of the three
Answer : B
Solution :
Conditions given:
(i) Ram & John have worked for 5 hours.
(ii) Krishna doesn?t want to work with Ram.
(iii) No pair should work beyond 5 hours.
Hence, Krishna should work with John to satisfy the above conditions.
10.?Popular Hindi fiction, despite ? or perhaps because of ? its wide reach, often does not
appear in our cinema. As ideals that viewers are meant to look up to rather than identify with,
Hindi film protagonisits usually read books of apsirational value: textbooks, English books,
or high value literature?.
Which one of the following CANNOT be inferred from the paragraph above?
A. Textbooks, English books or high literature have apsirational value, but not popular Hindi
fiction
B. People do not look up to writers of textbooks, English book or high value literature
C. Though popular hindi fiction was wide readh, it often does not appear in the movies
D. Protagonists in Hindi movies, being ideals for viewers, read only books of aspirational
value.
Answer : B
Solution :
People do not look up to writers of textbooks, English book or high value literature.
8
Civil Engineering
11.What is curl of the vector field 2x
2
yi + 5z
2
j - 4yzk?
A. - 14zi - 2x
2
k
B. 6zi + 4xj - 2x
2
k
C. 6zi + 8xyj + 2x
2
yk
D. -14zi + 6yj + 2x
2
k
Answer : A
Solution :
12.Analysis of a water sample revealed that the sample contains the following species.
9
Concentrations of which of the species will be required to compute alkalinity?
A.
B.
C.
D.
Answer : A
Solution :
H2CO3 and HCO3
-
never come together
13.The value of the function f(x) is given at n distinct values of x and its value is to be
interpolated at the point x
*
using all the n points. The estimate is obtained first by the
Lagrange polynomial, denoted by IL, and then by the Newton polynomial, denoted by IN.
Which one of the following statements is correct?
A. IL is always greater than IN
B. No definite relation exists between IL and IN.
C. IL is always less than IN
D. IL and IN are always equal
Answer : B
Solution :
Lagrange?s form is more efficient when you have to interpolate several data sets on the same
data point.
Newton?s form is more efficient when you have to interpolate data incrementally. So no
relationship between both.
14.If the fineness modulus of a sample of the fine aggregates is 4.3, the mean size of the
particles in the sample is between
10
A. 150 ?m and 300 ?m
B. 2.36 mm and 4.75 mm
C. 300 ?m and 600 ?m
D. 1.18 mm and 2.36 mm
Answer : D
Solution :
150 ?m, 300 ?m, 600 ?m, 1.18 mm,
2.36 mm, 4.75 mm, 10 mm, 20 mm,
40 mm, 80 mm
150 ? 1
300 ? 2
600 ? 3
4.75 - 6
15.The command area of a canal grows only one crop, i.e., wheat. The base period of wheat
is 120 days and its total water requirement, ?, is 40 cm. If the canal discharge is 2 m
3
/s, the
area, in hectares, rounded off to the nearest integer, which could be irrigated (neglecting all
losses) is ______________
Answer :
Solution :
B = 120 days
? = 0.4 m
and ? = 8.64B/D
? D = 2592 ha per (m
3
/s)
? For 2m
3
/sec water, area will be 5184 ha
11
16.The characteristic compressive strength of concrete required in a project is 25 MPa and
standard deviation in the observed compressive strength expected at site is 4 MPa. The
average compressive strength of cubes tested at different water-cement (w/c) ratios using the
same material as is used for the project is given in the table.
The water-cement ratio (in percent, round off to the lower integer) to be used in the mix
is________
Answer :
Solution :
fck = 25 ; ? = 4 MPa
fm = fck + 1.65? = 31.6 MPa
Using interpolation
= 46.7 (Rounded off to the lowest integer).
17.A solid sphere of radius, r, and made of material with density ?s, is moving through the
atmosphere (constant pressure, p) with a velocity, ?. The net force ONLY due to atmospheric
pressure (Fp) acting on the sphere at any time, t, is
A.
B. Zero
C. ?r
2
p
D. 4?r
2
p
Answer : B
Solution :
Force = area ? P
12
Net force will be zero as pressure acts from all sides.
18.An earthen dam of height H is made of cohesive soil whose cohesion and unit weight are c
and ?, respectively. If the factor of safety against cohesion is Fc, the Taylor?s stability
A.
B.
C.
D.
Answer : C
Solution :
Taylor?s stability number,
19.A closed thin walled tube has thickness, t, mean enclosed area within the boundary of the
centrline of tube?s thickness, Am, and shear stress ?. Torsional moment of resistance, T of the
section would be
A.
B.
13
C.
D.
Answer : A
Solution :
20.For a channel section subjected to a downward vertical shear force at its centroid, which
one of the following represents the correct distribution of shear stress in flange and web?
A.
B.
C.
14
D.
Answer : C
Solution :
Standard result
21.The degree of static indeterminancy of the plane frame is shown in the figure is ________
Answer :
Solution :
Ds = 3C ? R'
C = 6
Ds = (3 ? 6 ? 2) ? 1 (due to hinge)
= 15
15
22.Structural failures considered in the mechanistic method of bituminous pavement design
are
A. Shear and slippage
B. Fatique and Rutting
C. Fatique and shear
D. Rutting and shear
Answer : B
Solution :
As per IRC66:2012
23.Which one of the options contains ONLY primary air pollutants?
A. Ozone and peroxyacetyl nitrate
B. Nitrogen oxides and peroxyacetyl nitrate
C. Hydrocarbons and nitrogen oxides
D. Hydrocarbons and ozone
Answer : C
Solution :
Ozone and PAN are secondary air pollutants.
24.The following inequality is true for all x close to 0.
What is the value of
A. 2
B. 1/2
C. 0
16
D. 1
Answer : A
Solution :
It is form
L?s hospital rule (differentiate)
Putting 0 everywhere ? still form.
Differentiating numerator and denominator again,
25.The velocity field in a flow system is given by v = 2i + (x + y)j + (xyz)k. The acceleration
of the fluid at (1, 1, 2) is
A. j + k
B. 2i + 10 k
C. 4j + 10k
D. 4i + 12 k
Answer : C
Solution :
17
and
= 2 + (x + y) + (xyz)(0) + 0
and
= 2(yz) + (x + y)(xz) + (xyz)(xy) + 0
az = 2(1 ? 2) + (1 + 1)(1 ? 2) + (1 ? 1
? 2) (1?1)
= 10k
Therefore,
26.A steel column is restrained against both translation and rotation at one end and is
restrained only against rotation but free to translate at the other end. Theoretical and design
(IS: 800 ? 2007) values, respectively, of effective length factor of the column are
18
A. 1.0 and 1.0
B. 1.2 and 1.0
C. 1.2 and 1.2
D. 1.0 and 1.2
Answer : D
Solution :
As per IS:800-2007
27.Euclindean norm (length) of the vector [4 ?2 ? 6]
T
is
A. ?48
B. ?24
C. ?12
D. ?56
Answer : D
Solution :
The Euclidean norm assigns to each vector the length of its arrow. Because of this,
the Euclidean norm is often known as the magnitude. So,
Length
28.An inflow hydrograph is routed through a reservoir to produce an outflow hydrograph.
The peak flow of the inflow hydrograph is PI and the time of occurrence of the peak is tI. The
peak flow of the outflow hydrograph is P0 and the time of occurance of the peak is t0. Which
one of the following statements is correct?
A. PI < P0 and tI > t0
B. PI > P0 and tI > t0
C. PI < P0 and tI < t0
D. PI > P0 and tI < t0
Answer : D
Solution :
19
Pl > Po ; tl < to
29.Construction of a new building founded on a clayey soil was completed in January In
January 2014, the average consolidation settlement of the foundation in clay was recorded as
10 mm. The ultimate consolidation settlement was estimated in design as 40 mm.
Considering double drainage to occur at the clayey soil site, the expected consolidation
settlement in January 2019 (in mm, round off to the nearest integer) will be _____________
Answer :
Solution :
Ultimate consolidation = 40 mm
Recorded consolidation = 10 mm
? Total recorded consolidation
? 40 ? 0.375
20
30.The notation ?SC? as per Indian standard Soil Classification System refers to
A. Clayey silt
B. Sandy clay
C. Calyey sand
D. Silty clay
Answer : C
Solution :
SC : clayey sand
31.The speed-density relationship in a mid-block section of a highway follows the
Greenshield?s model. If the free flow speed is vf and the jam density is kj, the maximum flow
observed on this ection is
A.
B.
C. fvkj
D.
Answer : D
Solution :
?(1)
21
32.An anisotropic soil deposit has coefficient of permeability in vertical and horizontal
directions as kz and kx, respectively. For constructing a flow net, the horizontal dimension of
the problem?s geometry is transformed by a multiplying factor of
A.
B.
C.
D.
Answer : C
Solution :
Flow net for anisotropic soil.
?(i)
If we transformed geometry in x direction let x cordinate be transformed to the new
coordinate xt by the transformation.
22
?(ii)
From eq. (i) & (ii),
Hence prove
So, multiplied factor
33.The Laplace transform of sinh (at) is
A.
B.
C.
D.
Answer : C
Solution :
Laplace transform of sinh (at) =
23
34.The data from a closed traverse survey PQRS (run in the clockwise direction) are given in
the table
The closing error for the traverse PQRS (in degrees) is________
Answer :
Solution :
n = 4 (number of sides of closed traverse)
(2n ? 4) ? 90? = 360?
so, error in included angle
= (88 + 92 + 94 + 89) ? 360 = +3?
35.A vehicle is moving on a road of grade +4% at a speed of 20 m/s. Consider the coefficient
of rolling friction as 0.46 and acceleration due to gravity as 10 m/s
2
. On applying brakes to
reach a speed of 10 m/s, the required braking distance (in m, round off to nearest integer)
along the horizontal, is ______.
Answer :
Solution :
Given: grade = +4%
V1 = 20 m/sec.
f = 0.46
g = 10 m/sec.
V1 = 10 m/sec.
24
We know,
36.A broad gauge railway line passes through a horizontal curved section (radius = 875 m) of
length 200 m. The allowable speed on this portion is 100 km/h. For calculating the cant,
consider the gauge as centre-to-centre distance between the rail heads, equal to 1750mm, The
maximum permissible cant (in mm, round off to 1 decimal place) with respect to the centreto-
centre distance between the rail heads is ______.
Answer :
Solution :
Given data:
R = 875 mm
Allowable speed = 100 kmph
Gauge length G = 1750 mm
Allowable cant
37.When a specimen of M25 concrete is loaded to a stress level of 12.5 MPa, a strain of 500
? 10
?6
is recorded. If this load is allowed to stand for a long time, the strain increases to 1000
? 10
?6
. In accordance with provisions of IS: 456-2000, considering the long-term effects, the
effective modulus of elasticity of the concrete (in MPa) is ________
Answer :
Solution :
25
Short term strain = 500 ? 10
?6
Long term strain = 1000 ? 10
?6
So, creep coefficient,
? = 1
Long-term effective modulus
= 12500 N/mm
2
= 12500 MPa
or
38.The probability density function of a continuous random variable distributed uniformly
between x and y (for y > x) is
A.
B. x ? y
C. y ? x
D.
Answer : D
Solution :
Probability density function of a uniformly distributed random variable.
26
39.The uniform arrival and uniform service rates observed on an approach road to a
signalized intersection are 20 and 50 vehicles/minutes, respectively. For this signal, the red
time is 30 s, the effective green time is 30 s, and the cycle length is 60s. Assuming that
initially there are no vehicles in the queue, the average delay per vehicle using the approach
road during a cycle length (in s, round off to 2 decimal places) is _______
Answer :
Solution :
Average delay per vehicle
= 12.5 sec
40.A rolled I-section beam is supported on a 75 mm wide bearing plate as shown in the
figure. Thickness of flange and web of the I-section are 20 mm and 8mm, respectively. Root
27
radius of the I-section is 10mm. Assuming: material yield stress,
fy = 250 MPa and partial safety factor for material, ?mo = 1.10
As per IS: 800-2007, the web bearing strength (in kN, round off to 2 decimal places) of the
beam is _______
Answer :
Solution :
Effective area in bearing = [75 + 2.5 (flange thickness + root radius)] ? 8
= [75 + 2.5 (20 + 10)] ? 8
= 1200 mm
2
so, web bearing strength
= 272.73 kN
41.The critical bending compressive stress in the extreme fibre of a structural steel section is
1000 MPa. It is given that the yield strength of the steel is 250 MPa, width of flange is 250
mm and thickness of flange is 15 mm. As per the provisions of IS: 800-2007, the
nondimensional slendeness ratio of the steel crosssection is
28
A. 0.50
B. 2.00
C. 0.25
D. 0.75
Answer : A
Solution :
Non-dimensional slenderness ratio
42.At the foot of a spillyway, water flows at a depth of 23 cm with a velocity of 8.1 m/s, as
shown in the figure.
The flow enters as an M-3 profile in the long wide rectangular channel with bed
slope and Manning?s n = 0.A hydraulic jump is formed at a certain distance from
the foot of the spillway. Assume the acceleration due to gravity, g = 9.81 m/s
2
. Just before the
hydraulic jump, the depth of flow y1 (in m, round off to 2 decimal places) is _________
Answer :
Solution :
Given data:
y = 0.23 m
V = 8.1 m/sec.
Slope,
29
h = 0.015
g = 9.81 m/sec
2
q = yV = 8.1 ? 0.23
= 1.863 m
3
/sec/m
It is given that flow enters as an M-3 profile in the long wide rectangular channel with bed
slope
From manning equation at M3 profile section.
[for wide channel R = y]
The flow profile will follow normal depth (yn) after jump.
For wide rectangular channel,
Here, yn = y 2 = 1.11 m
30
Again,
? y 1 = 0.417 m < y c [supercritical]
43.Consider the reactor shown in the figure. The concentration (in mg/l) of a compound in
the influent and effluent are C0 and C, flow rate through the reactor is Q m
3
/h respectively.
The compound is degraded in the reactor following the first order reactions. The mixing
condition of the reactor Complete Mix Flow Reactor (CMFR) or a plug-flow reactor (PFR).
The length of the reactor can be adjusted in these two mixing conditions to LCMFR and
LPER while keeping the cross-section of the reactor constant. Assuming steady state and for
C/C0 = 0.8, the value of LCMFR/LPER (round off to 2 decimal places) is _______
Answer :
Solution :
A = constant
Q = AL
For plug flow
[ detention time for plug flow reaction]
For completely mix = C =
[ detention time for completely mix reaction]
31
Also,
44.A series of perpendicular offsets taken from a curved boundary wall to a straight survey
line at an interval of 6 m are 1.22, 1.67, 2.04, 2.34, 2.14, 1.87, and 1.15 m. The area (in m2,
round off to 2 decimal places) boundary by the survey line, curved boundary wall, the first
and the last offsets, determined using Simpson?s rule, is _______.
Answer :
Solution :
Area by simpson?s rule
45.A water treatment plant treats 6000 m
3
of water per day. As a part of the treatment
process, discrete particles are required to be settled in a clarifier. A column test indicates that
an overflow rate of 1.5 m per hour would produce the desired removal of particles through
FirstRanker.com - FirstRanker's Choice
2
GATE CE 2019 Set 2: Questions & Solutions
General Aptitude
1.Daytime temperature in Delhi can ______ 40?C
A. Peak
B. reach
C. get
D. stand
Answer : B
Solution :
Daytime temperature in Delhi can reach 40?C
2.The growth rate of ABC Motors in 2017 was the same ________ XYZ Motors in 2016 .
A. As those of
B. As that off
C. As that of
D. As off
Answer : C
Solution :
The growth rate of ABC Motors in 2017 was the same as that of XYZ Motors in 2016.
3.Suresh wanted to lay a new carpet in his new mansion with an area of 70 55 sq. mts.
However an area of 550 sq. mts had to be left out for flower pots. If the cost of carpet is Rs.
50 per sq. mts, how much money (in Rs.) will be spent by Suresh for the carpet now?
A. Rs. 1,65,000
B. Rs. 1,92,500
C. Rs. 1,27,500
D. Rs. 2,75,000
Answer : A
3
Solution :
Area of mansion = 70 ? 55 = 3850 m
2
Area for flower pots = 550 m
2
? Area left for carpet = 3850 ? 550 = 3300m
2
? Cost = 3300 ? 50 = 165000
4.A retaining wall with measurements 30 m ? 12 m ? 6 m was constructed with bricks of
dimensions 8 cm ? 6 cm. If 60% of the wall consists of bricks used for the construction is
___________ lakhs.
A. 45
B. 30
C. 40
D. 75
Answer : A
Solution :
Volume of wall = 30 ? 12 ? 6 = 2160 m
3
= 2160 ? 106 cm
3
Total volume of bricks required = 2160 ? 106 ? 0.6 cm
3
= 1296 ? 106 cm
3
Volume of one brick = 8 ? 6 ? 6 = 288 cm
3
? No. of bricks required
= 4.5 ? 10
6
= 45 lakhs
5.Hima Das was _______ only Indian athlete to win _____________ gold for India.
A. the, many
B. an, the
C. an, a
4
D. the, a
Answer : D
Solution :
Hima Das was the only Indian athlete to win a gold for India.
6.Population of state X increased by x% and the population of state Y increased by y% from
2001 to 2011. Assume that x is greater than y. Let P be the ratio of the population of state X
to state Y in a given year. The percentage increase in P from 2001 to 2011 is_____________
A. x ? y
B.
C.
D.
Answer : C
Solution :
Let population of X is ?A? in 2001
and Population of Y is ?B? in 2001
? Population of A in 2011
& Population of B in 2011
Given,
5
% increase in P
7.The Newspaper report that over 500 hectares of tribal land spread across 28 tribal
settlements in Mohinitampuram forest division have already been ?alienated?. A top forest
official said, ?First the tribals are duped out of their land holdings. Second, the families thus
rendered landless are often forced to encroach further into the forests?.
On the basis of the information available in the paragraph, _______ is/are responsible for
duping the tribals.
A. The newspaper
B. Landless families
C. forest officials
D. it cannot be inferred who
Answer : D
Solution :
?it cannot be inferred who?
From given information, nobody can be held responsible.
8.An oil tank can be filled by pipe X in 5 hours and pipe Y in 4 hours, each pump working on
its own. When the oil tank is full and the drainage hole is open, the oil is drained in 20 hours.
6
If initially the tank was empty and someone started the two pumps together but left the
drainage hole open, how many hours will it tak for the tank to be filled? (Assume that the rate
of drainage is independent of the head)
A. 2.50
B. 1.50
C. 2.00
D. 4.00
Answer : A
Solution :
Pipe X will fill how much in one hour tank
Pipe Y will fill how much in one hour tank
Drainage will drain out how much water in 1 hour tank
? Total tank filled in one hour
tank gets filled in = 1 hour
? Full (i) tank gets filled in
9.Mohan, the manager, wants his four workers to work in pairs. No paper should work for
more than 5 hours. Ram and Johan have worked together for 5 hours. Krishna and Amir have
7
worked as a team for 2 hours. Krishan does not want to work with Ram whom should mohan
allot to work with Johan, if we wants all the workers to continue working?
A. Amir
B. Krishna
C. Ram
D. None of the three
Answer : B
Solution :
Conditions given:
(i) Ram & John have worked for 5 hours.
(ii) Krishna doesn?t want to work with Ram.
(iii) No pair should work beyond 5 hours.
Hence, Krishna should work with John to satisfy the above conditions.
10.?Popular Hindi fiction, despite ? or perhaps because of ? its wide reach, often does not
appear in our cinema. As ideals that viewers are meant to look up to rather than identify with,
Hindi film protagonisits usually read books of apsirational value: textbooks, English books,
or high value literature?.
Which one of the following CANNOT be inferred from the paragraph above?
A. Textbooks, English books or high literature have apsirational value, but not popular Hindi
fiction
B. People do not look up to writers of textbooks, English book or high value literature
C. Though popular hindi fiction was wide readh, it often does not appear in the movies
D. Protagonists in Hindi movies, being ideals for viewers, read only books of aspirational
value.
Answer : B
Solution :
People do not look up to writers of textbooks, English book or high value literature.
8
Civil Engineering
11.What is curl of the vector field 2x
2
yi + 5z
2
j - 4yzk?
A. - 14zi - 2x
2
k
B. 6zi + 4xj - 2x
2
k
C. 6zi + 8xyj + 2x
2
yk
D. -14zi + 6yj + 2x
2
k
Answer : A
Solution :
12.Analysis of a water sample revealed that the sample contains the following species.
9
Concentrations of which of the species will be required to compute alkalinity?
A.
B.
C.
D.
Answer : A
Solution :
H2CO3 and HCO3
-
never come together
13.The value of the function f(x) is given at n distinct values of x and its value is to be
interpolated at the point x
*
using all the n points. The estimate is obtained first by the
Lagrange polynomial, denoted by IL, and then by the Newton polynomial, denoted by IN.
Which one of the following statements is correct?
A. IL is always greater than IN
B. No definite relation exists between IL and IN.
C. IL is always less than IN
D. IL and IN are always equal
Answer : B
Solution :
Lagrange?s form is more efficient when you have to interpolate several data sets on the same
data point.
Newton?s form is more efficient when you have to interpolate data incrementally. So no
relationship between both.
14.If the fineness modulus of a sample of the fine aggregates is 4.3, the mean size of the
particles in the sample is between
10
A. 150 ?m and 300 ?m
B. 2.36 mm and 4.75 mm
C. 300 ?m and 600 ?m
D. 1.18 mm and 2.36 mm
Answer : D
Solution :
150 ?m, 300 ?m, 600 ?m, 1.18 mm,
2.36 mm, 4.75 mm, 10 mm, 20 mm,
40 mm, 80 mm
150 ? 1
300 ? 2
600 ? 3
4.75 - 6
15.The command area of a canal grows only one crop, i.e., wheat. The base period of wheat
is 120 days and its total water requirement, ?, is 40 cm. If the canal discharge is 2 m
3
/s, the
area, in hectares, rounded off to the nearest integer, which could be irrigated (neglecting all
losses) is ______________
Answer :
Solution :
B = 120 days
? = 0.4 m
and ? = 8.64B/D
? D = 2592 ha per (m
3
/s)
? For 2m
3
/sec water, area will be 5184 ha
11
16.The characteristic compressive strength of concrete required in a project is 25 MPa and
standard deviation in the observed compressive strength expected at site is 4 MPa. The
average compressive strength of cubes tested at different water-cement (w/c) ratios using the
same material as is used for the project is given in the table.
The water-cement ratio (in percent, round off to the lower integer) to be used in the mix
is________
Answer :
Solution :
fck = 25 ; ? = 4 MPa
fm = fck + 1.65? = 31.6 MPa
Using interpolation
= 46.7 (Rounded off to the lowest integer).
17.A solid sphere of radius, r, and made of material with density ?s, is moving through the
atmosphere (constant pressure, p) with a velocity, ?. The net force ONLY due to atmospheric
pressure (Fp) acting on the sphere at any time, t, is
A.
B. Zero
C. ?r
2
p
D. 4?r
2
p
Answer : B
Solution :
Force = area ? P
12
Net force will be zero as pressure acts from all sides.
18.An earthen dam of height H is made of cohesive soil whose cohesion and unit weight are c
and ?, respectively. If the factor of safety against cohesion is Fc, the Taylor?s stability
A.
B.
C.
D.
Answer : C
Solution :
Taylor?s stability number,
19.A closed thin walled tube has thickness, t, mean enclosed area within the boundary of the
centrline of tube?s thickness, Am, and shear stress ?. Torsional moment of resistance, T of the
section would be
A.
B.
13
C.
D.
Answer : A
Solution :
20.For a channel section subjected to a downward vertical shear force at its centroid, which
one of the following represents the correct distribution of shear stress in flange and web?
A.
B.
C.
14
D.
Answer : C
Solution :
Standard result
21.The degree of static indeterminancy of the plane frame is shown in the figure is ________
Answer :
Solution :
Ds = 3C ? R'
C = 6
Ds = (3 ? 6 ? 2) ? 1 (due to hinge)
= 15
15
22.Structural failures considered in the mechanistic method of bituminous pavement design
are
A. Shear and slippage
B. Fatique and Rutting
C. Fatique and shear
D. Rutting and shear
Answer : B
Solution :
As per IRC66:2012
23.Which one of the options contains ONLY primary air pollutants?
A. Ozone and peroxyacetyl nitrate
B. Nitrogen oxides and peroxyacetyl nitrate
C. Hydrocarbons and nitrogen oxides
D. Hydrocarbons and ozone
Answer : C
Solution :
Ozone and PAN are secondary air pollutants.
24.The following inequality is true for all x close to 0.
What is the value of
A. 2
B. 1/2
C. 0
16
D. 1
Answer : A
Solution :
It is form
L?s hospital rule (differentiate)
Putting 0 everywhere ? still form.
Differentiating numerator and denominator again,
25.The velocity field in a flow system is given by v = 2i + (x + y)j + (xyz)k. The acceleration
of the fluid at (1, 1, 2) is
A. j + k
B. 2i + 10 k
C. 4j + 10k
D. 4i + 12 k
Answer : C
Solution :
17
and
= 2 + (x + y) + (xyz)(0) + 0
and
= 2(yz) + (x + y)(xz) + (xyz)(xy) + 0
az = 2(1 ? 2) + (1 + 1)(1 ? 2) + (1 ? 1
? 2) (1?1)
= 10k
Therefore,
26.A steel column is restrained against both translation and rotation at one end and is
restrained only against rotation but free to translate at the other end. Theoretical and design
(IS: 800 ? 2007) values, respectively, of effective length factor of the column are
18
A. 1.0 and 1.0
B. 1.2 and 1.0
C. 1.2 and 1.2
D. 1.0 and 1.2
Answer : D
Solution :
As per IS:800-2007
27.Euclindean norm (length) of the vector [4 ?2 ? 6]
T
is
A. ?48
B. ?24
C. ?12
D. ?56
Answer : D
Solution :
The Euclidean norm assigns to each vector the length of its arrow. Because of this,
the Euclidean norm is often known as the magnitude. So,
Length
28.An inflow hydrograph is routed through a reservoir to produce an outflow hydrograph.
The peak flow of the inflow hydrograph is PI and the time of occurrence of the peak is tI. The
peak flow of the outflow hydrograph is P0 and the time of occurance of the peak is t0. Which
one of the following statements is correct?
A. PI < P0 and tI > t0
B. PI > P0 and tI > t0
C. PI < P0 and tI < t0
D. PI > P0 and tI < t0
Answer : D
Solution :
19
Pl > Po ; tl < to
29.Construction of a new building founded on a clayey soil was completed in January In
January 2014, the average consolidation settlement of the foundation in clay was recorded as
10 mm. The ultimate consolidation settlement was estimated in design as 40 mm.
Considering double drainage to occur at the clayey soil site, the expected consolidation
settlement in January 2019 (in mm, round off to the nearest integer) will be _____________
Answer :
Solution :
Ultimate consolidation = 40 mm
Recorded consolidation = 10 mm
? Total recorded consolidation
? 40 ? 0.375
20
30.The notation ?SC? as per Indian standard Soil Classification System refers to
A. Clayey silt
B. Sandy clay
C. Calyey sand
D. Silty clay
Answer : C
Solution :
SC : clayey sand
31.The speed-density relationship in a mid-block section of a highway follows the
Greenshield?s model. If the free flow speed is vf and the jam density is kj, the maximum flow
observed on this ection is
A.
B.
C. fvkj
D.
Answer : D
Solution :
?(1)
21
32.An anisotropic soil deposit has coefficient of permeability in vertical and horizontal
directions as kz and kx, respectively. For constructing a flow net, the horizontal dimension of
the problem?s geometry is transformed by a multiplying factor of
A.
B.
C.
D.
Answer : C
Solution :
Flow net for anisotropic soil.
?(i)
If we transformed geometry in x direction let x cordinate be transformed to the new
coordinate xt by the transformation.
22
?(ii)
From eq. (i) & (ii),
Hence prove
So, multiplied factor
33.The Laplace transform of sinh (at) is
A.
B.
C.
D.
Answer : C
Solution :
Laplace transform of sinh (at) =
23
34.The data from a closed traverse survey PQRS (run in the clockwise direction) are given in
the table
The closing error for the traverse PQRS (in degrees) is________
Answer :
Solution :
n = 4 (number of sides of closed traverse)
(2n ? 4) ? 90? = 360?
so, error in included angle
= (88 + 92 + 94 + 89) ? 360 = +3?
35.A vehicle is moving on a road of grade +4% at a speed of 20 m/s. Consider the coefficient
of rolling friction as 0.46 and acceleration due to gravity as 10 m/s
2
. On applying brakes to
reach a speed of 10 m/s, the required braking distance (in m, round off to nearest integer)
along the horizontal, is ______.
Answer :
Solution :
Given: grade = +4%
V1 = 20 m/sec.
f = 0.46
g = 10 m/sec.
V1 = 10 m/sec.
24
We know,
36.A broad gauge railway line passes through a horizontal curved section (radius = 875 m) of
length 200 m. The allowable speed on this portion is 100 km/h. For calculating the cant,
consider the gauge as centre-to-centre distance between the rail heads, equal to 1750mm, The
maximum permissible cant (in mm, round off to 1 decimal place) with respect to the centreto-
centre distance between the rail heads is ______.
Answer :
Solution :
Given data:
R = 875 mm
Allowable speed = 100 kmph
Gauge length G = 1750 mm
Allowable cant
37.When a specimen of M25 concrete is loaded to a stress level of 12.5 MPa, a strain of 500
? 10
?6
is recorded. If this load is allowed to stand for a long time, the strain increases to 1000
? 10
?6
. In accordance with provisions of IS: 456-2000, considering the long-term effects, the
effective modulus of elasticity of the concrete (in MPa) is ________
Answer :
Solution :
25
Short term strain = 500 ? 10
?6
Long term strain = 1000 ? 10
?6
So, creep coefficient,
? = 1
Long-term effective modulus
= 12500 N/mm
2
= 12500 MPa
or
38.The probability density function of a continuous random variable distributed uniformly
between x and y (for y > x) is
A.
B. x ? y
C. y ? x
D.
Answer : D
Solution :
Probability density function of a uniformly distributed random variable.
26
39.The uniform arrival and uniform service rates observed on an approach road to a
signalized intersection are 20 and 50 vehicles/minutes, respectively. For this signal, the red
time is 30 s, the effective green time is 30 s, and the cycle length is 60s. Assuming that
initially there are no vehicles in the queue, the average delay per vehicle using the approach
road during a cycle length (in s, round off to 2 decimal places) is _______
Answer :
Solution :
Average delay per vehicle
= 12.5 sec
40.A rolled I-section beam is supported on a 75 mm wide bearing plate as shown in the
figure. Thickness of flange and web of the I-section are 20 mm and 8mm, respectively. Root
27
radius of the I-section is 10mm. Assuming: material yield stress,
fy = 250 MPa and partial safety factor for material, ?mo = 1.10
As per IS: 800-2007, the web bearing strength (in kN, round off to 2 decimal places) of the
beam is _______
Answer :
Solution :
Effective area in bearing = [75 + 2.5 (flange thickness + root radius)] ? 8
= [75 + 2.5 (20 + 10)] ? 8
= 1200 mm
2
so, web bearing strength
= 272.73 kN
41.The critical bending compressive stress in the extreme fibre of a structural steel section is
1000 MPa. It is given that the yield strength of the steel is 250 MPa, width of flange is 250
mm and thickness of flange is 15 mm. As per the provisions of IS: 800-2007, the
nondimensional slendeness ratio of the steel crosssection is
28
A. 0.50
B. 2.00
C. 0.25
D. 0.75
Answer : A
Solution :
Non-dimensional slenderness ratio
42.At the foot of a spillyway, water flows at a depth of 23 cm with a velocity of 8.1 m/s, as
shown in the figure.
The flow enters as an M-3 profile in the long wide rectangular channel with bed
slope and Manning?s n = 0.A hydraulic jump is formed at a certain distance from
the foot of the spillway. Assume the acceleration due to gravity, g = 9.81 m/s
2
. Just before the
hydraulic jump, the depth of flow y1 (in m, round off to 2 decimal places) is _________
Answer :
Solution :
Given data:
y = 0.23 m
V = 8.1 m/sec.
Slope,
29
h = 0.015
g = 9.81 m/sec
2
q = yV = 8.1 ? 0.23
= 1.863 m
3
/sec/m
It is given that flow enters as an M-3 profile in the long wide rectangular channel with bed
slope
From manning equation at M3 profile section.
[for wide channel R = y]
The flow profile will follow normal depth (yn) after jump.
For wide rectangular channel,
Here, yn = y 2 = 1.11 m
30
Again,
? y 1 = 0.417 m < y c [supercritical]
43.Consider the reactor shown in the figure. The concentration (in mg/l) of a compound in
the influent and effluent are C0 and C, flow rate through the reactor is Q m
3
/h respectively.
The compound is degraded in the reactor following the first order reactions. The mixing
condition of the reactor Complete Mix Flow Reactor (CMFR) or a plug-flow reactor (PFR).
The length of the reactor can be adjusted in these two mixing conditions to LCMFR and
LPER while keeping the cross-section of the reactor constant. Assuming steady state and for
C/C0 = 0.8, the value of LCMFR/LPER (round off to 2 decimal places) is _______
Answer :
Solution :
A = constant
Q = AL
For plug flow
[ detention time for plug flow reaction]
For completely mix = C =
[ detention time for completely mix reaction]
31
Also,
44.A series of perpendicular offsets taken from a curved boundary wall to a straight survey
line at an interval of 6 m are 1.22, 1.67, 2.04, 2.34, 2.14, 1.87, and 1.15 m. The area (in m2,
round off to 2 decimal places) boundary by the survey line, curved boundary wall, the first
and the last offsets, determined using Simpson?s rule, is _______.
Answer :
Solution :
Area by simpson?s rule
45.A water treatment plant treats 6000 m
3
of water per day. As a part of the treatment
process, discrete particles are required to be settled in a clarifier. A column test indicates that
an overflow rate of 1.5 m per hour would produce the desired removal of particles through
32
settling in the clarifier having a depth of 3.0 m. The volume of the required clarifier, (in m
3
,
round off to 1 decimal place) would be
Answer :
Solution :
Given data:
Flow rate = 6000 m
3
/day
Over flow rate = 1.5 m/hour
= 1.5 ? 24 m/day = 36 m/day
Flow area
= 166.67 m
2
Volume required for clarifier = Flow area ? depth
= 166.67 ? 3 = 500 m
3
46.A flexible pavement has the following class of loads during a particular hour of the day.
i. 80 buses with 2-axles (each axle load of 40 kN);
ii. 160 trucks with 2-axles (front and rear axle loads of 40 kN and 80 kN, respectively)
The equivalent standard axle load repetitions for this vehicle combination as per IRC:37-2012
would be
A. 320
B. 250
C. 240
D. 180
Answer : D
Solution :
FirstRanker.com - FirstRanker's Choice
2
GATE CE 2019 Set 2: Questions & Solutions
General Aptitude
1.Daytime temperature in Delhi can ______ 40?C
A. Peak
B. reach
C. get
D. stand
Answer : B
Solution :
Daytime temperature in Delhi can reach 40?C
2.The growth rate of ABC Motors in 2017 was the same ________ XYZ Motors in 2016 .
A. As those of
B. As that off
C. As that of
D. As off
Answer : C
Solution :
The growth rate of ABC Motors in 2017 was the same as that of XYZ Motors in 2016.
3.Suresh wanted to lay a new carpet in his new mansion with an area of 70 55 sq. mts.
However an area of 550 sq. mts had to be left out for flower pots. If the cost of carpet is Rs.
50 per sq. mts, how much money (in Rs.) will be spent by Suresh for the carpet now?
A. Rs. 1,65,000
B. Rs. 1,92,500
C. Rs. 1,27,500
D. Rs. 2,75,000
Answer : A
3
Solution :
Area of mansion = 70 ? 55 = 3850 m
2
Area for flower pots = 550 m
2
? Area left for carpet = 3850 ? 550 = 3300m
2
? Cost = 3300 ? 50 = 165000
4.A retaining wall with measurements 30 m ? 12 m ? 6 m was constructed with bricks of
dimensions 8 cm ? 6 cm. If 60% of the wall consists of bricks used for the construction is
___________ lakhs.
A. 45
B. 30
C. 40
D. 75
Answer : A
Solution :
Volume of wall = 30 ? 12 ? 6 = 2160 m
3
= 2160 ? 106 cm
3
Total volume of bricks required = 2160 ? 106 ? 0.6 cm
3
= 1296 ? 106 cm
3
Volume of one brick = 8 ? 6 ? 6 = 288 cm
3
? No. of bricks required
= 4.5 ? 10
6
= 45 lakhs
5.Hima Das was _______ only Indian athlete to win _____________ gold for India.
A. the, many
B. an, the
C. an, a
4
D. the, a
Answer : D
Solution :
Hima Das was the only Indian athlete to win a gold for India.
6.Population of state X increased by x% and the population of state Y increased by y% from
2001 to 2011. Assume that x is greater than y. Let P be the ratio of the population of state X
to state Y in a given year. The percentage increase in P from 2001 to 2011 is_____________
A. x ? y
B.
C.
D.
Answer : C
Solution :
Let population of X is ?A? in 2001
and Population of Y is ?B? in 2001
? Population of A in 2011
& Population of B in 2011
Given,
5
% increase in P
7.The Newspaper report that over 500 hectares of tribal land spread across 28 tribal
settlements in Mohinitampuram forest division have already been ?alienated?. A top forest
official said, ?First the tribals are duped out of their land holdings. Second, the families thus
rendered landless are often forced to encroach further into the forests?.
On the basis of the information available in the paragraph, _______ is/are responsible for
duping the tribals.
A. The newspaper
B. Landless families
C. forest officials
D. it cannot be inferred who
Answer : D
Solution :
?it cannot be inferred who?
From given information, nobody can be held responsible.
8.An oil tank can be filled by pipe X in 5 hours and pipe Y in 4 hours, each pump working on
its own. When the oil tank is full and the drainage hole is open, the oil is drained in 20 hours.
6
If initially the tank was empty and someone started the two pumps together but left the
drainage hole open, how many hours will it tak for the tank to be filled? (Assume that the rate
of drainage is independent of the head)
A. 2.50
B. 1.50
C. 2.00
D. 4.00
Answer : A
Solution :
Pipe X will fill how much in one hour tank
Pipe Y will fill how much in one hour tank
Drainage will drain out how much water in 1 hour tank
? Total tank filled in one hour
tank gets filled in = 1 hour
? Full (i) tank gets filled in
9.Mohan, the manager, wants his four workers to work in pairs. No paper should work for
more than 5 hours. Ram and Johan have worked together for 5 hours. Krishna and Amir have
7
worked as a team for 2 hours. Krishan does not want to work with Ram whom should mohan
allot to work with Johan, if we wants all the workers to continue working?
A. Amir
B. Krishna
C. Ram
D. None of the three
Answer : B
Solution :
Conditions given:
(i) Ram & John have worked for 5 hours.
(ii) Krishna doesn?t want to work with Ram.
(iii) No pair should work beyond 5 hours.
Hence, Krishna should work with John to satisfy the above conditions.
10.?Popular Hindi fiction, despite ? or perhaps because of ? its wide reach, often does not
appear in our cinema. As ideals that viewers are meant to look up to rather than identify with,
Hindi film protagonisits usually read books of apsirational value: textbooks, English books,
or high value literature?.
Which one of the following CANNOT be inferred from the paragraph above?
A. Textbooks, English books or high literature have apsirational value, but not popular Hindi
fiction
B. People do not look up to writers of textbooks, English book or high value literature
C. Though popular hindi fiction was wide readh, it often does not appear in the movies
D. Protagonists in Hindi movies, being ideals for viewers, read only books of aspirational
value.
Answer : B
Solution :
People do not look up to writers of textbooks, English book or high value literature.
8
Civil Engineering
11.What is curl of the vector field 2x
2
yi + 5z
2
j - 4yzk?
A. - 14zi - 2x
2
k
B. 6zi + 4xj - 2x
2
k
C. 6zi + 8xyj + 2x
2
yk
D. -14zi + 6yj + 2x
2
k
Answer : A
Solution :
12.Analysis of a water sample revealed that the sample contains the following species.
9
Concentrations of which of the species will be required to compute alkalinity?
A.
B.
C.
D.
Answer : A
Solution :
H2CO3 and HCO3
-
never come together
13.The value of the function f(x) is given at n distinct values of x and its value is to be
interpolated at the point x
*
using all the n points. The estimate is obtained first by the
Lagrange polynomial, denoted by IL, and then by the Newton polynomial, denoted by IN.
Which one of the following statements is correct?
A. IL is always greater than IN
B. No definite relation exists between IL and IN.
C. IL is always less than IN
D. IL and IN are always equal
Answer : B
Solution :
Lagrange?s form is more efficient when you have to interpolate several data sets on the same
data point.
Newton?s form is more efficient when you have to interpolate data incrementally. So no
relationship between both.
14.If the fineness modulus of a sample of the fine aggregates is 4.3, the mean size of the
particles in the sample is between
10
A. 150 ?m and 300 ?m
B. 2.36 mm and 4.75 mm
C. 300 ?m and 600 ?m
D. 1.18 mm and 2.36 mm
Answer : D
Solution :
150 ?m, 300 ?m, 600 ?m, 1.18 mm,
2.36 mm, 4.75 mm, 10 mm, 20 mm,
40 mm, 80 mm
150 ? 1
300 ? 2
600 ? 3
4.75 - 6
15.The command area of a canal grows only one crop, i.e., wheat. The base period of wheat
is 120 days and its total water requirement, ?, is 40 cm. If the canal discharge is 2 m
3
/s, the
area, in hectares, rounded off to the nearest integer, which could be irrigated (neglecting all
losses) is ______________
Answer :
Solution :
B = 120 days
? = 0.4 m
and ? = 8.64B/D
? D = 2592 ha per (m
3
/s)
? For 2m
3
/sec water, area will be 5184 ha
11
16.The characteristic compressive strength of concrete required in a project is 25 MPa and
standard deviation in the observed compressive strength expected at site is 4 MPa. The
average compressive strength of cubes tested at different water-cement (w/c) ratios using the
same material as is used for the project is given in the table.
The water-cement ratio (in percent, round off to the lower integer) to be used in the mix
is________
Answer :
Solution :
fck = 25 ; ? = 4 MPa
fm = fck + 1.65? = 31.6 MPa
Using interpolation
= 46.7 (Rounded off to the lowest integer).
17.A solid sphere of radius, r, and made of material with density ?s, is moving through the
atmosphere (constant pressure, p) with a velocity, ?. The net force ONLY due to atmospheric
pressure (Fp) acting on the sphere at any time, t, is
A.
B. Zero
C. ?r
2
p
D. 4?r
2
p
Answer : B
Solution :
Force = area ? P
12
Net force will be zero as pressure acts from all sides.
18.An earthen dam of height H is made of cohesive soil whose cohesion and unit weight are c
and ?, respectively. If the factor of safety against cohesion is Fc, the Taylor?s stability
A.
B.
C.
D.
Answer : C
Solution :
Taylor?s stability number,
19.A closed thin walled tube has thickness, t, mean enclosed area within the boundary of the
centrline of tube?s thickness, Am, and shear stress ?. Torsional moment of resistance, T of the
section would be
A.
B.
13
C.
D.
Answer : A
Solution :
20.For a channel section subjected to a downward vertical shear force at its centroid, which
one of the following represents the correct distribution of shear stress in flange and web?
A.
B.
C.
14
D.
Answer : C
Solution :
Standard result
21.The degree of static indeterminancy of the plane frame is shown in the figure is ________
Answer :
Solution :
Ds = 3C ? R'
C = 6
Ds = (3 ? 6 ? 2) ? 1 (due to hinge)
= 15
15
22.Structural failures considered in the mechanistic method of bituminous pavement design
are
A. Shear and slippage
B. Fatique and Rutting
C. Fatique and shear
D. Rutting and shear
Answer : B
Solution :
As per IRC66:2012
23.Which one of the options contains ONLY primary air pollutants?
A. Ozone and peroxyacetyl nitrate
B. Nitrogen oxides and peroxyacetyl nitrate
C. Hydrocarbons and nitrogen oxides
D. Hydrocarbons and ozone
Answer : C
Solution :
Ozone and PAN are secondary air pollutants.
24.The following inequality is true for all x close to 0.
What is the value of
A. 2
B. 1/2
C. 0
16
D. 1
Answer : A
Solution :
It is form
L?s hospital rule (differentiate)
Putting 0 everywhere ? still form.
Differentiating numerator and denominator again,
25.The velocity field in a flow system is given by v = 2i + (x + y)j + (xyz)k. The acceleration
of the fluid at (1, 1, 2) is
A. j + k
B. 2i + 10 k
C. 4j + 10k
D. 4i + 12 k
Answer : C
Solution :
17
and
= 2 + (x + y) + (xyz)(0) + 0
and
= 2(yz) + (x + y)(xz) + (xyz)(xy) + 0
az = 2(1 ? 2) + (1 + 1)(1 ? 2) + (1 ? 1
? 2) (1?1)
= 10k
Therefore,
26.A steel column is restrained against both translation and rotation at one end and is
restrained only against rotation but free to translate at the other end. Theoretical and design
(IS: 800 ? 2007) values, respectively, of effective length factor of the column are
18
A. 1.0 and 1.0
B. 1.2 and 1.0
C. 1.2 and 1.2
D. 1.0 and 1.2
Answer : D
Solution :
As per IS:800-2007
27.Euclindean norm (length) of the vector [4 ?2 ? 6]
T
is
A. ?48
B. ?24
C. ?12
D. ?56
Answer : D
Solution :
The Euclidean norm assigns to each vector the length of its arrow. Because of this,
the Euclidean norm is often known as the magnitude. So,
Length
28.An inflow hydrograph is routed through a reservoir to produce an outflow hydrograph.
The peak flow of the inflow hydrograph is PI and the time of occurrence of the peak is tI. The
peak flow of the outflow hydrograph is P0 and the time of occurance of the peak is t0. Which
one of the following statements is correct?
A. PI < P0 and tI > t0
B. PI > P0 and tI > t0
C. PI < P0 and tI < t0
D. PI > P0 and tI < t0
Answer : D
Solution :
19
Pl > Po ; tl < to
29.Construction of a new building founded on a clayey soil was completed in January In
January 2014, the average consolidation settlement of the foundation in clay was recorded as
10 mm. The ultimate consolidation settlement was estimated in design as 40 mm.
Considering double drainage to occur at the clayey soil site, the expected consolidation
settlement in January 2019 (in mm, round off to the nearest integer) will be _____________
Answer :
Solution :
Ultimate consolidation = 40 mm
Recorded consolidation = 10 mm
? Total recorded consolidation
? 40 ? 0.375
20
30.The notation ?SC? as per Indian standard Soil Classification System refers to
A. Clayey silt
B. Sandy clay
C. Calyey sand
D. Silty clay
Answer : C
Solution :
SC : clayey sand
31.The speed-density relationship in a mid-block section of a highway follows the
Greenshield?s model. If the free flow speed is vf and the jam density is kj, the maximum flow
observed on this ection is
A.
B.
C. fvkj
D.
Answer : D
Solution :
?(1)
21
32.An anisotropic soil deposit has coefficient of permeability in vertical and horizontal
directions as kz and kx, respectively. For constructing a flow net, the horizontal dimension of
the problem?s geometry is transformed by a multiplying factor of
A.
B.
C.
D.
Answer : C
Solution :
Flow net for anisotropic soil.
?(i)
If we transformed geometry in x direction let x cordinate be transformed to the new
coordinate xt by the transformation.
22
?(ii)
From eq. (i) & (ii),
Hence prove
So, multiplied factor
33.The Laplace transform of sinh (at) is
A.
B.
C.
D.
Answer : C
Solution :
Laplace transform of sinh (at) =
23
34.The data from a closed traverse survey PQRS (run in the clockwise direction) are given in
the table
The closing error for the traverse PQRS (in degrees) is________
Answer :
Solution :
n = 4 (number of sides of closed traverse)
(2n ? 4) ? 90? = 360?
so, error in included angle
= (88 + 92 + 94 + 89) ? 360 = +3?
35.A vehicle is moving on a road of grade +4% at a speed of 20 m/s. Consider the coefficient
of rolling friction as 0.46 and acceleration due to gravity as 10 m/s
2
. On applying brakes to
reach a speed of 10 m/s, the required braking distance (in m, round off to nearest integer)
along the horizontal, is ______.
Answer :
Solution :
Given: grade = +4%
V1 = 20 m/sec.
f = 0.46
g = 10 m/sec.
V1 = 10 m/sec.
24
We know,
36.A broad gauge railway line passes through a horizontal curved section (radius = 875 m) of
length 200 m. The allowable speed on this portion is 100 km/h. For calculating the cant,
consider the gauge as centre-to-centre distance between the rail heads, equal to 1750mm, The
maximum permissible cant (in mm, round off to 1 decimal place) with respect to the centreto-
centre distance between the rail heads is ______.
Answer :
Solution :
Given data:
R = 875 mm
Allowable speed = 100 kmph
Gauge length G = 1750 mm
Allowable cant
37.When a specimen of M25 concrete is loaded to a stress level of 12.5 MPa, a strain of 500
? 10
?6
is recorded. If this load is allowed to stand for a long time, the strain increases to 1000
? 10
?6
. In accordance with provisions of IS: 456-2000, considering the long-term effects, the
effective modulus of elasticity of the concrete (in MPa) is ________
Answer :
Solution :
25
Short term strain = 500 ? 10
?6
Long term strain = 1000 ? 10
?6
So, creep coefficient,
? = 1
Long-term effective modulus
= 12500 N/mm
2
= 12500 MPa
or
38.The probability density function of a continuous random variable distributed uniformly
between x and y (for y > x) is
A.
B. x ? y
C. y ? x
D.
Answer : D
Solution :
Probability density function of a uniformly distributed random variable.
26
39.The uniform arrival and uniform service rates observed on an approach road to a
signalized intersection are 20 and 50 vehicles/minutes, respectively. For this signal, the red
time is 30 s, the effective green time is 30 s, and the cycle length is 60s. Assuming that
initially there are no vehicles in the queue, the average delay per vehicle using the approach
road during a cycle length (in s, round off to 2 decimal places) is _______
Answer :
Solution :
Average delay per vehicle
= 12.5 sec
40.A rolled I-section beam is supported on a 75 mm wide bearing plate as shown in the
figure. Thickness of flange and web of the I-section are 20 mm and 8mm, respectively. Root
27
radius of the I-section is 10mm. Assuming: material yield stress,
fy = 250 MPa and partial safety factor for material, ?mo = 1.10
As per IS: 800-2007, the web bearing strength (in kN, round off to 2 decimal places) of the
beam is _______
Answer :
Solution :
Effective area in bearing = [75 + 2.5 (flange thickness + root radius)] ? 8
= [75 + 2.5 (20 + 10)] ? 8
= 1200 mm
2
so, web bearing strength
= 272.73 kN
41.The critical bending compressive stress in the extreme fibre of a structural steel section is
1000 MPa. It is given that the yield strength of the steel is 250 MPa, width of flange is 250
mm and thickness of flange is 15 mm. As per the provisions of IS: 800-2007, the
nondimensional slendeness ratio of the steel crosssection is
28
A. 0.50
B. 2.00
C. 0.25
D. 0.75
Answer : A
Solution :
Non-dimensional slenderness ratio
42.At the foot of a spillyway, water flows at a depth of 23 cm with a velocity of 8.1 m/s, as
shown in the figure.
The flow enters as an M-3 profile in the long wide rectangular channel with bed
slope and Manning?s n = 0.A hydraulic jump is formed at a certain distance from
the foot of the spillway. Assume the acceleration due to gravity, g = 9.81 m/s
2
. Just before the
hydraulic jump, the depth of flow y1 (in m, round off to 2 decimal places) is _________
Answer :
Solution :
Given data:
y = 0.23 m
V = 8.1 m/sec.
Slope,
29
h = 0.015
g = 9.81 m/sec
2
q = yV = 8.1 ? 0.23
= 1.863 m
3
/sec/m
It is given that flow enters as an M-3 profile in the long wide rectangular channel with bed
slope
From manning equation at M3 profile section.
[for wide channel R = y]
The flow profile will follow normal depth (yn) after jump.
For wide rectangular channel,
Here, yn = y 2 = 1.11 m
30
Again,
? y 1 = 0.417 m < y c [supercritical]
43.Consider the reactor shown in the figure. The concentration (in mg/l) of a compound in
the influent and effluent are C0 and C, flow rate through the reactor is Q m
3
/h respectively.
The compound is degraded in the reactor following the first order reactions. The mixing
condition of the reactor Complete Mix Flow Reactor (CMFR) or a plug-flow reactor (PFR).
The length of the reactor can be adjusted in these two mixing conditions to LCMFR and
LPER while keeping the cross-section of the reactor constant. Assuming steady state and for
C/C0 = 0.8, the value of LCMFR/LPER (round off to 2 decimal places) is _______
Answer :
Solution :
A = constant
Q = AL
For plug flow
[ detention time for plug flow reaction]
For completely mix = C =
[ detention time for completely mix reaction]
31
Also,
44.A series of perpendicular offsets taken from a curved boundary wall to a straight survey
line at an interval of 6 m are 1.22, 1.67, 2.04, 2.34, 2.14, 1.87, and 1.15 m. The area (in m2,
round off to 2 decimal places) boundary by the survey line, curved boundary wall, the first
and the last offsets, determined using Simpson?s rule, is _______.
Answer :
Solution :
Area by simpson?s rule
45.A water treatment plant treats 6000 m
3
of water per day. As a part of the treatment
process, discrete particles are required to be settled in a clarifier. A column test indicates that
an overflow rate of 1.5 m per hour would produce the desired removal of particles through
32
settling in the clarifier having a depth of 3.0 m. The volume of the required clarifier, (in m
3
,
round off to 1 decimal place) would be
Answer :
Solution :
Given data:
Flow rate = 6000 m
3
/day
Over flow rate = 1.5 m/hour
= 1.5 ? 24 m/day = 36 m/day
Flow area
= 166.67 m
2
Volume required for clarifier = Flow area ? depth
= 166.67 ? 3 = 500 m
3
46.A flexible pavement has the following class of loads during a particular hour of the day.
i. 80 buses with 2-axles (each axle load of 40 kN);
ii. 160 trucks with 2-axles (front and rear axle loads of 40 kN and 80 kN, respectively)
The equivalent standard axle load repetitions for this vehicle combination as per IRC:37-2012
would be
A. 320
B. 250
C. 240
D. 180
Answer : D
Solution :
33
= 5 + 5 + 10 + 160
= 180
47.Constant head permeability tests were performed on two soil specimens, S1 and SThe
ratio of height of the two specimens (LS1: LS2) is 1.5, the ratio of the diameter of specimens
(DS1:DS2) is 0.5, and the ratio of the constant head (hs1:hs2) applied on the specimens is 2.0. If
the discharge from both the specimens is equal, the ratio of the permeability of the soil
specimens (ks1:ks2) is ________
Answer :
Solution :
For constant head permeability test,
Q ? discharge
L ? length of specimen
a ? area of cross-section of specimen
h ? constant head
Given,
FirstRanker.com - FirstRanker's Choice
2
GATE CE 2019 Set 2: Questions & Solutions
General Aptitude
1.Daytime temperature in Delhi can ______ 40?C
A. Peak
B. reach
C. get
D. stand
Answer : B
Solution :
Daytime temperature in Delhi can reach 40?C
2.The growth rate of ABC Motors in 2017 was the same ________ XYZ Motors in 2016 .
A. As those of
B. As that off
C. As that of
D. As off
Answer : C
Solution :
The growth rate of ABC Motors in 2017 was the same as that of XYZ Motors in 2016.
3.Suresh wanted to lay a new carpet in his new mansion with an area of 70 55 sq. mts.
However an area of 550 sq. mts had to be left out for flower pots. If the cost of carpet is Rs.
50 per sq. mts, how much money (in Rs.) will be spent by Suresh for the carpet now?
A. Rs. 1,65,000
B. Rs. 1,92,500
C. Rs. 1,27,500
D. Rs. 2,75,000
Answer : A
3
Solution :
Area of mansion = 70 ? 55 = 3850 m
2
Area for flower pots = 550 m
2
? Area left for carpet = 3850 ? 550 = 3300m
2
? Cost = 3300 ? 50 = 165000
4.A retaining wall with measurements 30 m ? 12 m ? 6 m was constructed with bricks of
dimensions 8 cm ? 6 cm. If 60% of the wall consists of bricks used for the construction is
___________ lakhs.
A. 45
B. 30
C. 40
D. 75
Answer : A
Solution :
Volume of wall = 30 ? 12 ? 6 = 2160 m
3
= 2160 ? 106 cm
3
Total volume of bricks required = 2160 ? 106 ? 0.6 cm
3
= 1296 ? 106 cm
3
Volume of one brick = 8 ? 6 ? 6 = 288 cm
3
? No. of bricks required
= 4.5 ? 10
6
= 45 lakhs
5.Hima Das was _______ only Indian athlete to win _____________ gold for India.
A. the, many
B. an, the
C. an, a
4
D. the, a
Answer : D
Solution :
Hima Das was the only Indian athlete to win a gold for India.
6.Population of state X increased by x% and the population of state Y increased by y% from
2001 to 2011. Assume that x is greater than y. Let P be the ratio of the population of state X
to state Y in a given year. The percentage increase in P from 2001 to 2011 is_____________
A. x ? y
B.
C.
D.
Answer : C
Solution :
Let population of X is ?A? in 2001
and Population of Y is ?B? in 2001
? Population of A in 2011
& Population of B in 2011
Given,
5
% increase in P
7.The Newspaper report that over 500 hectares of tribal land spread across 28 tribal
settlements in Mohinitampuram forest division have already been ?alienated?. A top forest
official said, ?First the tribals are duped out of their land holdings. Second, the families thus
rendered landless are often forced to encroach further into the forests?.
On the basis of the information available in the paragraph, _______ is/are responsible for
duping the tribals.
A. The newspaper
B. Landless families
C. forest officials
D. it cannot be inferred who
Answer : D
Solution :
?it cannot be inferred who?
From given information, nobody can be held responsible.
8.An oil tank can be filled by pipe X in 5 hours and pipe Y in 4 hours, each pump working on
its own. When the oil tank is full and the drainage hole is open, the oil is drained in 20 hours.
6
If initially the tank was empty and someone started the two pumps together but left the
drainage hole open, how many hours will it tak for the tank to be filled? (Assume that the rate
of drainage is independent of the head)
A. 2.50
B. 1.50
C. 2.00
D. 4.00
Answer : A
Solution :
Pipe X will fill how much in one hour tank
Pipe Y will fill how much in one hour tank
Drainage will drain out how much water in 1 hour tank
? Total tank filled in one hour
tank gets filled in = 1 hour
? Full (i) tank gets filled in
9.Mohan, the manager, wants his four workers to work in pairs. No paper should work for
more than 5 hours. Ram and Johan have worked together for 5 hours. Krishna and Amir have
7
worked as a team for 2 hours. Krishan does not want to work with Ram whom should mohan
allot to work with Johan, if we wants all the workers to continue working?
A. Amir
B. Krishna
C. Ram
D. None of the three
Answer : B
Solution :
Conditions given:
(i) Ram & John have worked for 5 hours.
(ii) Krishna doesn?t want to work with Ram.
(iii) No pair should work beyond 5 hours.
Hence, Krishna should work with John to satisfy the above conditions.
10.?Popular Hindi fiction, despite ? or perhaps because of ? its wide reach, often does not
appear in our cinema. As ideals that viewers are meant to look up to rather than identify with,
Hindi film protagonisits usually read books of apsirational value: textbooks, English books,
or high value literature?.
Which one of the following CANNOT be inferred from the paragraph above?
A. Textbooks, English books or high literature have apsirational value, but not popular Hindi
fiction
B. People do not look up to writers of textbooks, English book or high value literature
C. Though popular hindi fiction was wide readh, it often does not appear in the movies
D. Protagonists in Hindi movies, being ideals for viewers, read only books of aspirational
value.
Answer : B
Solution :
People do not look up to writers of textbooks, English book or high value literature.
8
Civil Engineering
11.What is curl of the vector field 2x
2
yi + 5z
2
j - 4yzk?
A. - 14zi - 2x
2
k
B. 6zi + 4xj - 2x
2
k
C. 6zi + 8xyj + 2x
2
yk
D. -14zi + 6yj + 2x
2
k
Answer : A
Solution :
12.Analysis of a water sample revealed that the sample contains the following species.
9
Concentrations of which of the species will be required to compute alkalinity?
A.
B.
C.
D.
Answer : A
Solution :
H2CO3 and HCO3
-
never come together
13.The value of the function f(x) is given at n distinct values of x and its value is to be
interpolated at the point x
*
using all the n points. The estimate is obtained first by the
Lagrange polynomial, denoted by IL, and then by the Newton polynomial, denoted by IN.
Which one of the following statements is correct?
A. IL is always greater than IN
B. No definite relation exists between IL and IN.
C. IL is always less than IN
D. IL and IN are always equal
Answer : B
Solution :
Lagrange?s form is more efficient when you have to interpolate several data sets on the same
data point.
Newton?s form is more efficient when you have to interpolate data incrementally. So no
relationship between both.
14.If the fineness modulus of a sample of the fine aggregates is 4.3, the mean size of the
particles in the sample is between
10
A. 150 ?m and 300 ?m
B. 2.36 mm and 4.75 mm
C. 300 ?m and 600 ?m
D. 1.18 mm and 2.36 mm
Answer : D
Solution :
150 ?m, 300 ?m, 600 ?m, 1.18 mm,
2.36 mm, 4.75 mm, 10 mm, 20 mm,
40 mm, 80 mm
150 ? 1
300 ? 2
600 ? 3
4.75 - 6
15.The command area of a canal grows only one crop, i.e., wheat. The base period of wheat
is 120 days and its total water requirement, ?, is 40 cm. If the canal discharge is 2 m
3
/s, the
area, in hectares, rounded off to the nearest integer, which could be irrigated (neglecting all
losses) is ______________
Answer :
Solution :
B = 120 days
? = 0.4 m
and ? = 8.64B/D
? D = 2592 ha per (m
3
/s)
? For 2m
3
/sec water, area will be 5184 ha
11
16.The characteristic compressive strength of concrete required in a project is 25 MPa and
standard deviation in the observed compressive strength expected at site is 4 MPa. The
average compressive strength of cubes tested at different water-cement (w/c) ratios using the
same material as is used for the project is given in the table.
The water-cement ratio (in percent, round off to the lower integer) to be used in the mix
is________
Answer :
Solution :
fck = 25 ; ? = 4 MPa
fm = fck + 1.65? = 31.6 MPa
Using interpolation
= 46.7 (Rounded off to the lowest integer).
17.A solid sphere of radius, r, and made of material with density ?s, is moving through the
atmosphere (constant pressure, p) with a velocity, ?. The net force ONLY due to atmospheric
pressure (Fp) acting on the sphere at any time, t, is
A.
B. Zero
C. ?r
2
p
D. 4?r
2
p
Answer : B
Solution :
Force = area ? P
12
Net force will be zero as pressure acts from all sides.
18.An earthen dam of height H is made of cohesive soil whose cohesion and unit weight are c
and ?, respectively. If the factor of safety against cohesion is Fc, the Taylor?s stability
A.
B.
C.
D.
Answer : C
Solution :
Taylor?s stability number,
19.A closed thin walled tube has thickness, t, mean enclosed area within the boundary of the
centrline of tube?s thickness, Am, and shear stress ?. Torsional moment of resistance, T of the
section would be
A.
B.
13
C.
D.
Answer : A
Solution :
20.For a channel section subjected to a downward vertical shear force at its centroid, which
one of the following represents the correct distribution of shear stress in flange and web?
A.
B.
C.
14
D.
Answer : C
Solution :
Standard result
21.The degree of static indeterminancy of the plane frame is shown in the figure is ________
Answer :
Solution :
Ds = 3C ? R'
C = 6
Ds = (3 ? 6 ? 2) ? 1 (due to hinge)
= 15
15
22.Structural failures considered in the mechanistic method of bituminous pavement design
are
A. Shear and slippage
B. Fatique and Rutting
C. Fatique and shear
D. Rutting and shear
Answer : B
Solution :
As per IRC66:2012
23.Which one of the options contains ONLY primary air pollutants?
A. Ozone and peroxyacetyl nitrate
B. Nitrogen oxides and peroxyacetyl nitrate
C. Hydrocarbons and nitrogen oxides
D. Hydrocarbons and ozone
Answer : C
Solution :
Ozone and PAN are secondary air pollutants.
24.The following inequality is true for all x close to 0.
What is the value of
A. 2
B. 1/2
C. 0
16
D. 1
Answer : A
Solution :
It is form
L?s hospital rule (differentiate)
Putting 0 everywhere ? still form.
Differentiating numerator and denominator again,
25.The velocity field in a flow system is given by v = 2i + (x + y)j + (xyz)k. The acceleration
of the fluid at (1, 1, 2) is
A. j + k
B. 2i + 10 k
C. 4j + 10k
D. 4i + 12 k
Answer : C
Solution :
17
and
= 2 + (x + y) + (xyz)(0) + 0
and
= 2(yz) + (x + y)(xz) + (xyz)(xy) + 0
az = 2(1 ? 2) + (1 + 1)(1 ? 2) + (1 ? 1
? 2) (1?1)
= 10k
Therefore,
26.A steel column is restrained against both translation and rotation at one end and is
restrained only against rotation but free to translate at the other end. Theoretical and design
(IS: 800 ? 2007) values, respectively, of effective length factor of the column are
18
A. 1.0 and 1.0
B. 1.2 and 1.0
C. 1.2 and 1.2
D. 1.0 and 1.2
Answer : D
Solution :
As per IS:800-2007
27.Euclindean norm (length) of the vector [4 ?2 ? 6]
T
is
A. ?48
B. ?24
C. ?12
D. ?56
Answer : D
Solution :
The Euclidean norm assigns to each vector the length of its arrow. Because of this,
the Euclidean norm is often known as the magnitude. So,
Length
28.An inflow hydrograph is routed through a reservoir to produce an outflow hydrograph.
The peak flow of the inflow hydrograph is PI and the time of occurrence of the peak is tI. The
peak flow of the outflow hydrograph is P0 and the time of occurance of the peak is t0. Which
one of the following statements is correct?
A. PI < P0 and tI > t0
B. PI > P0 and tI > t0
C. PI < P0 and tI < t0
D. PI > P0 and tI < t0
Answer : D
Solution :
19
Pl > Po ; tl < to
29.Construction of a new building founded on a clayey soil was completed in January In
January 2014, the average consolidation settlement of the foundation in clay was recorded as
10 mm. The ultimate consolidation settlement was estimated in design as 40 mm.
Considering double drainage to occur at the clayey soil site, the expected consolidation
settlement in January 2019 (in mm, round off to the nearest integer) will be _____________
Answer :
Solution :
Ultimate consolidation = 40 mm
Recorded consolidation = 10 mm
? Total recorded consolidation
? 40 ? 0.375
20
30.The notation ?SC? as per Indian standard Soil Classification System refers to
A. Clayey silt
B. Sandy clay
C. Calyey sand
D. Silty clay
Answer : C
Solution :
SC : clayey sand
31.The speed-density relationship in a mid-block section of a highway follows the
Greenshield?s model. If the free flow speed is vf and the jam density is kj, the maximum flow
observed on this ection is
A.
B.
C. fvkj
D.
Answer : D
Solution :
?(1)
21
32.An anisotropic soil deposit has coefficient of permeability in vertical and horizontal
directions as kz and kx, respectively. For constructing a flow net, the horizontal dimension of
the problem?s geometry is transformed by a multiplying factor of
A.
B.
C.
D.
Answer : C
Solution :
Flow net for anisotropic soil.
?(i)
If we transformed geometry in x direction let x cordinate be transformed to the new
coordinate xt by the transformation.
22
?(ii)
From eq. (i) & (ii),
Hence prove
So, multiplied factor
33.The Laplace transform of sinh (at) is
A.
B.
C.
D.
Answer : C
Solution :
Laplace transform of sinh (at) =
23
34.The data from a closed traverse survey PQRS (run in the clockwise direction) are given in
the table
The closing error for the traverse PQRS (in degrees) is________
Answer :
Solution :
n = 4 (number of sides of closed traverse)
(2n ? 4) ? 90? = 360?
so, error in included angle
= (88 + 92 + 94 + 89) ? 360 = +3?
35.A vehicle is moving on a road of grade +4% at a speed of 20 m/s. Consider the coefficient
of rolling friction as 0.46 and acceleration due to gravity as 10 m/s
2
. On applying brakes to
reach a speed of 10 m/s, the required braking distance (in m, round off to nearest integer)
along the horizontal, is ______.
Answer :
Solution :
Given: grade = +4%
V1 = 20 m/sec.
f = 0.46
g = 10 m/sec.
V1 = 10 m/sec.
24
We know,
36.A broad gauge railway line passes through a horizontal curved section (radius = 875 m) of
length 200 m. The allowable speed on this portion is 100 km/h. For calculating the cant,
consider the gauge as centre-to-centre distance between the rail heads, equal to 1750mm, The
maximum permissible cant (in mm, round off to 1 decimal place) with respect to the centreto-
centre distance between the rail heads is ______.
Answer :
Solution :
Given data:
R = 875 mm
Allowable speed = 100 kmph
Gauge length G = 1750 mm
Allowable cant
37.When a specimen of M25 concrete is loaded to a stress level of 12.5 MPa, a strain of 500
? 10
?6
is recorded. If this load is allowed to stand for a long time, the strain increases to 1000
? 10
?6
. In accordance with provisions of IS: 456-2000, considering the long-term effects, the
effective modulus of elasticity of the concrete (in MPa) is ________
Answer :
Solution :
25
Short term strain = 500 ? 10
?6
Long term strain = 1000 ? 10
?6
So, creep coefficient,
? = 1
Long-term effective modulus
= 12500 N/mm
2
= 12500 MPa
or
38.The probability density function of a continuous random variable distributed uniformly
between x and y (for y > x) is
A.
B. x ? y
C. y ? x
D.
Answer : D
Solution :
Probability density function of a uniformly distributed random variable.
26
39.The uniform arrival and uniform service rates observed on an approach road to a
signalized intersection are 20 and 50 vehicles/minutes, respectively. For this signal, the red
time is 30 s, the effective green time is 30 s, and the cycle length is 60s. Assuming that
initially there are no vehicles in the queue, the average delay per vehicle using the approach
road during a cycle length (in s, round off to 2 decimal places) is _______
Answer :
Solution :
Average delay per vehicle
= 12.5 sec
40.A rolled I-section beam is supported on a 75 mm wide bearing plate as shown in the
figure. Thickness of flange and web of the I-section are 20 mm and 8mm, respectively. Root
27
radius of the I-section is 10mm. Assuming: material yield stress,
fy = 250 MPa and partial safety factor for material, ?mo = 1.10
As per IS: 800-2007, the web bearing strength (in kN, round off to 2 decimal places) of the
beam is _______
Answer :
Solution :
Effective area in bearing = [75 + 2.5 (flange thickness + root radius)] ? 8
= [75 + 2.5 (20 + 10)] ? 8
= 1200 mm
2
so, web bearing strength
= 272.73 kN
41.The critical bending compressive stress in the extreme fibre of a structural steel section is
1000 MPa. It is given that the yield strength of the steel is 250 MPa, width of flange is 250
mm and thickness of flange is 15 mm. As per the provisions of IS: 800-2007, the
nondimensional slendeness ratio of the steel crosssection is
28
A. 0.50
B. 2.00
C. 0.25
D. 0.75
Answer : A
Solution :
Non-dimensional slenderness ratio
42.At the foot of a spillyway, water flows at a depth of 23 cm with a velocity of 8.1 m/s, as
shown in the figure.
The flow enters as an M-3 profile in the long wide rectangular channel with bed
slope and Manning?s n = 0.A hydraulic jump is formed at a certain distance from
the foot of the spillway. Assume the acceleration due to gravity, g = 9.81 m/s
2
. Just before the
hydraulic jump, the depth of flow y1 (in m, round off to 2 decimal places) is _________
Answer :
Solution :
Given data:
y = 0.23 m
V = 8.1 m/sec.
Slope,
29
h = 0.015
g = 9.81 m/sec
2
q = yV = 8.1 ? 0.23
= 1.863 m
3
/sec/m
It is given that flow enters as an M-3 profile in the long wide rectangular channel with bed
slope
From manning equation at M3 profile section.
[for wide channel R = y]
The flow profile will follow normal depth (yn) after jump.
For wide rectangular channel,
Here, yn = y 2 = 1.11 m
30
Again,
? y 1 = 0.417 m < y c [supercritical]
43.Consider the reactor shown in the figure. The concentration (in mg/l) of a compound in
the influent and effluent are C0 and C, flow rate through the reactor is Q m
3
/h respectively.
The compound is degraded in the reactor following the first order reactions. The mixing
condition of the reactor Complete Mix Flow Reactor (CMFR) or a plug-flow reactor (PFR).
The length of the reactor can be adjusted in these two mixing conditions to LCMFR and
LPER while keeping the cross-section of the reactor constant. Assuming steady state and for
C/C0 = 0.8, the value of LCMFR/LPER (round off to 2 decimal places) is _______
Answer :
Solution :
A = constant
Q = AL
For plug flow
[ detention time for plug flow reaction]
For completely mix = C =
[ detention time for completely mix reaction]
31
Also,
44.A series of perpendicular offsets taken from a curved boundary wall to a straight survey
line at an interval of 6 m are 1.22, 1.67, 2.04, 2.34, 2.14, 1.87, and 1.15 m. The area (in m2,
round off to 2 decimal places) boundary by the survey line, curved boundary wall, the first
and the last offsets, determined using Simpson?s rule, is _______.
Answer :
Solution :
Area by simpson?s rule
45.A water treatment plant treats 6000 m
3
of water per day. As a part of the treatment
process, discrete particles are required to be settled in a clarifier. A column test indicates that
an overflow rate of 1.5 m per hour would produce the desired removal of particles through
32
settling in the clarifier having a depth of 3.0 m. The volume of the required clarifier, (in m
3
,
round off to 1 decimal place) would be
Answer :
Solution :
Given data:
Flow rate = 6000 m
3
/day
Over flow rate = 1.5 m/hour
= 1.5 ? 24 m/day = 36 m/day
Flow area
= 166.67 m
2
Volume required for clarifier = Flow area ? depth
= 166.67 ? 3 = 500 m
3
46.A flexible pavement has the following class of loads during a particular hour of the day.
i. 80 buses with 2-axles (each axle load of 40 kN);
ii. 160 trucks with 2-axles (front and rear axle loads of 40 kN and 80 kN, respectively)
The equivalent standard axle load repetitions for this vehicle combination as per IRC:37-2012
would be
A. 320
B. 250
C. 240
D. 180
Answer : D
Solution :
33
= 5 + 5 + 10 + 160
= 180
47.Constant head permeability tests were performed on two soil specimens, S1 and SThe
ratio of height of the two specimens (LS1: LS2) is 1.5, the ratio of the diameter of specimens
(DS1:DS2) is 0.5, and the ratio of the constant head (hs1:hs2) applied on the specimens is 2.0. If
the discharge from both the specimens is equal, the ratio of the permeability of the soil
specimens (ks1:ks2) is ________
Answer :
Solution :
For constant head permeability test,
Q ? discharge
L ? length of specimen
a ? area of cross-section of specimen
h ? constant head
Given,
34
48.A long uniformly distributed load of 10 kN/m and a concentrated load of 60 kN are
moving together on the beam ABCD shown in the figure (not drawn to scale). The relative
positions of the two loads are not fixed. The maximum shear force (in kN, round off to the
nearest integer) caused at the internal hinge B due to the two loads is __________
Answer :
Solution :
FirstRanker.com - FirstRanker's Choice
2
GATE CE 2019 Set 2: Questions & Solutions
General Aptitude
1.Daytime temperature in Delhi can ______ 40?C
A. Peak
B. reach
C. get
D. stand
Answer : B
Solution :
Daytime temperature in Delhi can reach 40?C
2.The growth rate of ABC Motors in 2017 was the same ________ XYZ Motors in 2016 .
A. As those of
B. As that off
C. As that of
D. As off
Answer : C
Solution :
The growth rate of ABC Motors in 2017 was the same as that of XYZ Motors in 2016.
3.Suresh wanted to lay a new carpet in his new mansion with an area of 70 55 sq. mts.
However an area of 550 sq. mts had to be left out for flower pots. If the cost of carpet is Rs.
50 per sq. mts, how much money (in Rs.) will be spent by Suresh for the carpet now?
A. Rs. 1,65,000
B. Rs. 1,92,500
C. Rs. 1,27,500
D. Rs. 2,75,000
Answer : A
3
Solution :
Area of mansion = 70 ? 55 = 3850 m
2
Area for flower pots = 550 m
2
? Area left for carpet = 3850 ? 550 = 3300m
2
? Cost = 3300 ? 50 = 165000
4.A retaining wall with measurements 30 m ? 12 m ? 6 m was constructed with bricks of
dimensions 8 cm ? 6 cm. If 60% of the wall consists of bricks used for the construction is
___________ lakhs.
A. 45
B. 30
C. 40
D. 75
Answer : A
Solution :
Volume of wall = 30 ? 12 ? 6 = 2160 m
3
= 2160 ? 106 cm
3
Total volume of bricks required = 2160 ? 106 ? 0.6 cm
3
= 1296 ? 106 cm
3
Volume of one brick = 8 ? 6 ? 6 = 288 cm
3
? No. of bricks required
= 4.5 ? 10
6
= 45 lakhs
5.Hima Das was _______ only Indian athlete to win _____________ gold for India.
A. the, many
B. an, the
C. an, a
4
D. the, a
Answer : D
Solution :
Hima Das was the only Indian athlete to win a gold for India.
6.Population of state X increased by x% and the population of state Y increased by y% from
2001 to 2011. Assume that x is greater than y. Let P be the ratio of the population of state X
to state Y in a given year. The percentage increase in P from 2001 to 2011 is_____________
A. x ? y
B.
C.
D.
Answer : C
Solution :
Let population of X is ?A? in 2001
and Population of Y is ?B? in 2001
? Population of A in 2011
& Population of B in 2011
Given,
5
% increase in P
7.The Newspaper report that over 500 hectares of tribal land spread across 28 tribal
settlements in Mohinitampuram forest division have already been ?alienated?. A top forest
official said, ?First the tribals are duped out of their land holdings. Second, the families thus
rendered landless are often forced to encroach further into the forests?.
On the basis of the information available in the paragraph, _______ is/are responsible for
duping the tribals.
A. The newspaper
B. Landless families
C. forest officials
D. it cannot be inferred who
Answer : D
Solution :
?it cannot be inferred who?
From given information, nobody can be held responsible.
8.An oil tank can be filled by pipe X in 5 hours and pipe Y in 4 hours, each pump working on
its own. When the oil tank is full and the drainage hole is open, the oil is drained in 20 hours.
6
If initially the tank was empty and someone started the two pumps together but left the
drainage hole open, how many hours will it tak for the tank to be filled? (Assume that the rate
of drainage is independent of the head)
A. 2.50
B. 1.50
C. 2.00
D. 4.00
Answer : A
Solution :
Pipe X will fill how much in one hour tank
Pipe Y will fill how much in one hour tank
Drainage will drain out how much water in 1 hour tank
? Total tank filled in one hour
tank gets filled in = 1 hour
? Full (i) tank gets filled in
9.Mohan, the manager, wants his four workers to work in pairs. No paper should work for
more than 5 hours. Ram and Johan have worked together for 5 hours. Krishna and Amir have
7
worked as a team for 2 hours. Krishan does not want to work with Ram whom should mohan
allot to work with Johan, if we wants all the workers to continue working?
A. Amir
B. Krishna
C. Ram
D. None of the three
Answer : B
Solution :
Conditions given:
(i) Ram & John have worked for 5 hours.
(ii) Krishna doesn?t want to work with Ram.
(iii) No pair should work beyond 5 hours.
Hence, Krishna should work with John to satisfy the above conditions.
10.?Popular Hindi fiction, despite ? or perhaps because of ? its wide reach, often does not
appear in our cinema. As ideals that viewers are meant to look up to rather than identify with,
Hindi film protagonisits usually read books of apsirational value: textbooks, English books,
or high value literature?.
Which one of the following CANNOT be inferred from the paragraph above?
A. Textbooks, English books or high literature have apsirational value, but not popular Hindi
fiction
B. People do not look up to writers of textbooks, English book or high value literature
C. Though popular hindi fiction was wide readh, it often does not appear in the movies
D. Protagonists in Hindi movies, being ideals for viewers, read only books of aspirational
value.
Answer : B
Solution :
People do not look up to writers of textbooks, English book or high value literature.
8
Civil Engineering
11.What is curl of the vector field 2x
2
yi + 5z
2
j - 4yzk?
A. - 14zi - 2x
2
k
B. 6zi + 4xj - 2x
2
k
C. 6zi + 8xyj + 2x
2
yk
D. -14zi + 6yj + 2x
2
k
Answer : A
Solution :
12.Analysis of a water sample revealed that the sample contains the following species.
9
Concentrations of which of the species will be required to compute alkalinity?
A.
B.
C.
D.
Answer : A
Solution :
H2CO3 and HCO3
-
never come together
13.The value of the function f(x) is given at n distinct values of x and its value is to be
interpolated at the point x
*
using all the n points. The estimate is obtained first by the
Lagrange polynomial, denoted by IL, and then by the Newton polynomial, denoted by IN.
Which one of the following statements is correct?
A. IL is always greater than IN
B. No definite relation exists between IL and IN.
C. IL is always less than IN
D. IL and IN are always equal
Answer : B
Solution :
Lagrange?s form is more efficient when you have to interpolate several data sets on the same
data point.
Newton?s form is more efficient when you have to interpolate data incrementally. So no
relationship between both.
14.If the fineness modulus of a sample of the fine aggregates is 4.3, the mean size of the
particles in the sample is between
10
A. 150 ?m and 300 ?m
B. 2.36 mm and 4.75 mm
C. 300 ?m and 600 ?m
D. 1.18 mm and 2.36 mm
Answer : D
Solution :
150 ?m, 300 ?m, 600 ?m, 1.18 mm,
2.36 mm, 4.75 mm, 10 mm, 20 mm,
40 mm, 80 mm
150 ? 1
300 ? 2
600 ? 3
4.75 - 6
15.The command area of a canal grows only one crop, i.e., wheat. The base period of wheat
is 120 days and its total water requirement, ?, is 40 cm. If the canal discharge is 2 m
3
/s, the
area, in hectares, rounded off to the nearest integer, which could be irrigated (neglecting all
losses) is ______________
Answer :
Solution :
B = 120 days
? = 0.4 m
and ? = 8.64B/D
? D = 2592 ha per (m
3
/s)
? For 2m
3
/sec water, area will be 5184 ha
11
16.The characteristic compressive strength of concrete required in a project is 25 MPa and
standard deviation in the observed compressive strength expected at site is 4 MPa. The
average compressive strength of cubes tested at different water-cement (w/c) ratios using the
same material as is used for the project is given in the table.
The water-cement ratio (in percent, round off to the lower integer) to be used in the mix
is________
Answer :
Solution :
fck = 25 ; ? = 4 MPa
fm = fck + 1.65? = 31.6 MPa
Using interpolation
= 46.7 (Rounded off to the lowest integer).
17.A solid sphere of radius, r, and made of material with density ?s, is moving through the
atmosphere (constant pressure, p) with a velocity, ?. The net force ONLY due to atmospheric
pressure (Fp) acting on the sphere at any time, t, is
A.
B. Zero
C. ?r
2
p
D. 4?r
2
p
Answer : B
Solution :
Force = area ? P
12
Net force will be zero as pressure acts from all sides.
18.An earthen dam of height H is made of cohesive soil whose cohesion and unit weight are c
and ?, respectively. If the factor of safety against cohesion is Fc, the Taylor?s stability
A.
B.
C.
D.
Answer : C
Solution :
Taylor?s stability number,
19.A closed thin walled tube has thickness, t, mean enclosed area within the boundary of the
centrline of tube?s thickness, Am, and shear stress ?. Torsional moment of resistance, T of the
section would be
A.
B.
13
C.
D.
Answer : A
Solution :
20.For a channel section subjected to a downward vertical shear force at its centroid, which
one of the following represents the correct distribution of shear stress in flange and web?
A.
B.
C.
14
D.
Answer : C
Solution :
Standard result
21.The degree of static indeterminancy of the plane frame is shown in the figure is ________
Answer :
Solution :
Ds = 3C ? R'
C = 6
Ds = (3 ? 6 ? 2) ? 1 (due to hinge)
= 15
15
22.Structural failures considered in the mechanistic method of bituminous pavement design
are
A. Shear and slippage
B. Fatique and Rutting
C. Fatique and shear
D. Rutting and shear
Answer : B
Solution :
As per IRC66:2012
23.Which one of the options contains ONLY primary air pollutants?
A. Ozone and peroxyacetyl nitrate
B. Nitrogen oxides and peroxyacetyl nitrate
C. Hydrocarbons and nitrogen oxides
D. Hydrocarbons and ozone
Answer : C
Solution :
Ozone and PAN are secondary air pollutants.
24.The following inequality is true for all x close to 0.
What is the value of
A. 2
B. 1/2
C. 0
16
D. 1
Answer : A
Solution :
It is form
L?s hospital rule (differentiate)
Putting 0 everywhere ? still form.
Differentiating numerator and denominator again,
25.The velocity field in a flow system is given by v = 2i + (x + y)j + (xyz)k. The acceleration
of the fluid at (1, 1, 2) is
A. j + k
B. 2i + 10 k
C. 4j + 10k
D. 4i + 12 k
Answer : C
Solution :
17
and
= 2 + (x + y) + (xyz)(0) + 0
and
= 2(yz) + (x + y)(xz) + (xyz)(xy) + 0
az = 2(1 ? 2) + (1 + 1)(1 ? 2) + (1 ? 1
? 2) (1?1)
= 10k
Therefore,
26.A steel column is restrained against both translation and rotation at one end and is
restrained only against rotation but free to translate at the other end. Theoretical and design
(IS: 800 ? 2007) values, respectively, of effective length factor of the column are
18
A. 1.0 and 1.0
B. 1.2 and 1.0
C. 1.2 and 1.2
D. 1.0 and 1.2
Answer : D
Solution :
As per IS:800-2007
27.Euclindean norm (length) of the vector [4 ?2 ? 6]
T
is
A. ?48
B. ?24
C. ?12
D. ?56
Answer : D
Solution :
The Euclidean norm assigns to each vector the length of its arrow. Because of this,
the Euclidean norm is often known as the magnitude. So,
Length
28.An inflow hydrograph is routed through a reservoir to produce an outflow hydrograph.
The peak flow of the inflow hydrograph is PI and the time of occurrence of the peak is tI. The
peak flow of the outflow hydrograph is P0 and the time of occurance of the peak is t0. Which
one of the following statements is correct?
A. PI < P0 and tI > t0
B. PI > P0 and tI > t0
C. PI < P0 and tI < t0
D. PI > P0 and tI < t0
Answer : D
Solution :
19
Pl > Po ; tl < to
29.Construction of a new building founded on a clayey soil was completed in January In
January 2014, the average consolidation settlement of the foundation in clay was recorded as
10 mm. The ultimate consolidation settlement was estimated in design as 40 mm.
Considering double drainage to occur at the clayey soil site, the expected consolidation
settlement in January 2019 (in mm, round off to the nearest integer) will be _____________
Answer :
Solution :
Ultimate consolidation = 40 mm
Recorded consolidation = 10 mm
? Total recorded consolidation
? 40 ? 0.375
20
30.The notation ?SC? as per Indian standard Soil Classification System refers to
A. Clayey silt
B. Sandy clay
C. Calyey sand
D. Silty clay
Answer : C
Solution :
SC : clayey sand
31.The speed-density relationship in a mid-block section of a highway follows the
Greenshield?s model. If the free flow speed is vf and the jam density is kj, the maximum flow
observed on this ection is
A.
B.
C. fvkj
D.
Answer : D
Solution :
?(1)
21
32.An anisotropic soil deposit has coefficient of permeability in vertical and horizontal
directions as kz and kx, respectively. For constructing a flow net, the horizontal dimension of
the problem?s geometry is transformed by a multiplying factor of
A.
B.
C.
D.
Answer : C
Solution :
Flow net for anisotropic soil.
?(i)
If we transformed geometry in x direction let x cordinate be transformed to the new
coordinate xt by the transformation.
22
?(ii)
From eq. (i) & (ii),
Hence prove
So, multiplied factor
33.The Laplace transform of sinh (at) is
A.
B.
C.
D.
Answer : C
Solution :
Laplace transform of sinh (at) =
23
34.The data from a closed traverse survey PQRS (run in the clockwise direction) are given in
the table
The closing error for the traverse PQRS (in degrees) is________
Answer :
Solution :
n = 4 (number of sides of closed traverse)
(2n ? 4) ? 90? = 360?
so, error in included angle
= (88 + 92 + 94 + 89) ? 360 = +3?
35.A vehicle is moving on a road of grade +4% at a speed of 20 m/s. Consider the coefficient
of rolling friction as 0.46 and acceleration due to gravity as 10 m/s
2
. On applying brakes to
reach a speed of 10 m/s, the required braking distance (in m, round off to nearest integer)
along the horizontal, is ______.
Answer :
Solution :
Given: grade = +4%
V1 = 20 m/sec.
f = 0.46
g = 10 m/sec.
V1 = 10 m/sec.
24
We know,
36.A broad gauge railway line passes through a horizontal curved section (radius = 875 m) of
length 200 m. The allowable speed on this portion is 100 km/h. For calculating the cant,
consider the gauge as centre-to-centre distance between the rail heads, equal to 1750mm, The
maximum permissible cant (in mm, round off to 1 decimal place) with respect to the centreto-
centre distance between the rail heads is ______.
Answer :
Solution :
Given data:
R = 875 mm
Allowable speed = 100 kmph
Gauge length G = 1750 mm
Allowable cant
37.When a specimen of M25 concrete is loaded to a stress level of 12.5 MPa, a strain of 500
? 10
?6
is recorded. If this load is allowed to stand for a long time, the strain increases to 1000
? 10
?6
. In accordance with provisions of IS: 456-2000, considering the long-term effects, the
effective modulus of elasticity of the concrete (in MPa) is ________
Answer :
Solution :
25
Short term strain = 500 ? 10
?6
Long term strain = 1000 ? 10
?6
So, creep coefficient,
? = 1
Long-term effective modulus
= 12500 N/mm
2
= 12500 MPa
or
38.The probability density function of a continuous random variable distributed uniformly
between x and y (for y > x) is
A.
B. x ? y
C. y ? x
D.
Answer : D
Solution :
Probability density function of a uniformly distributed random variable.
26
39.The uniform arrival and uniform service rates observed on an approach road to a
signalized intersection are 20 and 50 vehicles/minutes, respectively. For this signal, the red
time is 30 s, the effective green time is 30 s, and the cycle length is 60s. Assuming that
initially there are no vehicles in the queue, the average delay per vehicle using the approach
road during a cycle length (in s, round off to 2 decimal places) is _______
Answer :
Solution :
Average delay per vehicle
= 12.5 sec
40.A rolled I-section beam is supported on a 75 mm wide bearing plate as shown in the
figure. Thickness of flange and web of the I-section are 20 mm and 8mm, respectively. Root
27
radius of the I-section is 10mm. Assuming: material yield stress,
fy = 250 MPa and partial safety factor for material, ?mo = 1.10
As per IS: 800-2007, the web bearing strength (in kN, round off to 2 decimal places) of the
beam is _______
Answer :
Solution :
Effective area in bearing = [75 + 2.5 (flange thickness + root radius)] ? 8
= [75 + 2.5 (20 + 10)] ? 8
= 1200 mm
2
so, web bearing strength
= 272.73 kN
41.The critical bending compressive stress in the extreme fibre of a structural steel section is
1000 MPa. It is given that the yield strength of the steel is 250 MPa, width of flange is 250
mm and thickness of flange is 15 mm. As per the provisions of IS: 800-2007, the
nondimensional slendeness ratio of the steel crosssection is
28
A. 0.50
B. 2.00
C. 0.25
D. 0.75
Answer : A
Solution :
Non-dimensional slenderness ratio
42.At the foot of a spillyway, water flows at a depth of 23 cm with a velocity of 8.1 m/s, as
shown in the figure.
The flow enters as an M-3 profile in the long wide rectangular channel with bed
slope and Manning?s n = 0.A hydraulic jump is formed at a certain distance from
the foot of the spillway. Assume the acceleration due to gravity, g = 9.81 m/s
2
. Just before the
hydraulic jump, the depth of flow y1 (in m, round off to 2 decimal places) is _________
Answer :
Solution :
Given data:
y = 0.23 m
V = 8.1 m/sec.
Slope,
29
h = 0.015
g = 9.81 m/sec
2
q = yV = 8.1 ? 0.23
= 1.863 m
3
/sec/m
It is given that flow enters as an M-3 profile in the long wide rectangular channel with bed
slope
From manning equation at M3 profile section.
[for wide channel R = y]
The flow profile will follow normal depth (yn) after jump.
For wide rectangular channel,
Here, yn = y 2 = 1.11 m
30
Again,
? y 1 = 0.417 m < y c [supercritical]
43.Consider the reactor shown in the figure. The concentration (in mg/l) of a compound in
the influent and effluent are C0 and C, flow rate through the reactor is Q m
3
/h respectively.
The compound is degraded in the reactor following the first order reactions. The mixing
condition of the reactor Complete Mix Flow Reactor (CMFR) or a plug-flow reactor (PFR).
The length of the reactor can be adjusted in these two mixing conditions to LCMFR and
LPER while keeping the cross-section of the reactor constant. Assuming steady state and for
C/C0 = 0.8, the value of LCMFR/LPER (round off to 2 decimal places) is _______
Answer :
Solution :
A = constant
Q = AL
For plug flow
[ detention time for plug flow reaction]
For completely mix = C =
[ detention time for completely mix reaction]
31
Also,
44.A series of perpendicular offsets taken from a curved boundary wall to a straight survey
line at an interval of 6 m are 1.22, 1.67, 2.04, 2.34, 2.14, 1.87, and 1.15 m. The area (in m2,
round off to 2 decimal places) boundary by the survey line, curved boundary wall, the first
and the last offsets, determined using Simpson?s rule, is _______.
Answer :
Solution :
Area by simpson?s rule
45.A water treatment plant treats 6000 m
3
of water per day. As a part of the treatment
process, discrete particles are required to be settled in a clarifier. A column test indicates that
an overflow rate of 1.5 m per hour would produce the desired removal of particles through
32
settling in the clarifier having a depth of 3.0 m. The volume of the required clarifier, (in m
3
,
round off to 1 decimal place) would be
Answer :
Solution :
Given data:
Flow rate = 6000 m
3
/day
Over flow rate = 1.5 m/hour
= 1.5 ? 24 m/day = 36 m/day
Flow area
= 166.67 m
2
Volume required for clarifier = Flow area ? depth
= 166.67 ? 3 = 500 m
3
46.A flexible pavement has the following class of loads during a particular hour of the day.
i. 80 buses with 2-axles (each axle load of 40 kN);
ii. 160 trucks with 2-axles (front and rear axle loads of 40 kN and 80 kN, respectively)
The equivalent standard axle load repetitions for this vehicle combination as per IRC:37-2012
would be
A. 320
B. 250
C. 240
D. 180
Answer : D
Solution :
33
= 5 + 5 + 10 + 160
= 180
47.Constant head permeability tests were performed on two soil specimens, S1 and SThe
ratio of height of the two specimens (LS1: LS2) is 1.5, the ratio of the diameter of specimens
(DS1:DS2) is 0.5, and the ratio of the constant head (hs1:hs2) applied on the specimens is 2.0. If
the discharge from both the specimens is equal, the ratio of the permeability of the soil
specimens (ks1:ks2) is ________
Answer :
Solution :
For constant head permeability test,
Q ? discharge
L ? length of specimen
a ? area of cross-section of specimen
h ? constant head
Given,
34
48.A long uniformly distributed load of 10 kN/m and a concentrated load of 60 kN are
moving together on the beam ABCD shown in the figure (not drawn to scale). The relative
positions of the two loads are not fixed. The maximum shear force (in kN, round off to the
nearest integer) caused at the internal hinge B due to the two loads is __________
Answer :
Solution :
35
Maximum
49.A square footing of 2m sides rests on the surface of a homogeneous soil bed having the
properties: cohesion c = 24 kPa, angle of internal friction ? = 25?, and unit weight ? = 18
kN/m
3
. Terzaghi?s bearing capacity factor ? = 25? are Nc = 25.1, Nq = 12.7, N? = 9.7, N?c =
14.8, N?q = 5.6, and N?? = 3.The ultimate bearing capacity of the foundation (in kPa, round
off to 2 decimal places) is ______.
Answer :
Solution :
Here, ? < 29
o
Footing rests on the ground
Hence, q = 0
so,
use, accordingly.
50.The dimensions of a soil sampler are given in the table.
FirstRanker.com - FirstRanker's Choice
2
GATE CE 2019 Set 2: Questions & Solutions
General Aptitude
1.Daytime temperature in Delhi can ______ 40?C
A. Peak
B. reach
C. get
D. stand
Answer : B
Solution :
Daytime temperature in Delhi can reach 40?C
2.The growth rate of ABC Motors in 2017 was the same ________ XYZ Motors in 2016 .
A. As those of
B. As that off
C. As that of
D. As off
Answer : C
Solution :
The growth rate of ABC Motors in 2017 was the same as that of XYZ Motors in 2016.
3.Suresh wanted to lay a new carpet in his new mansion with an area of 70 55 sq. mts.
However an area of 550 sq. mts had to be left out for flower pots. If the cost of carpet is Rs.
50 per sq. mts, how much money (in Rs.) will be spent by Suresh for the carpet now?
A. Rs. 1,65,000
B. Rs. 1,92,500
C. Rs. 1,27,500
D. Rs. 2,75,000
Answer : A
3
Solution :
Area of mansion = 70 ? 55 = 3850 m
2
Area for flower pots = 550 m
2
? Area left for carpet = 3850 ? 550 = 3300m
2
? Cost = 3300 ? 50 = 165000
4.A retaining wall with measurements 30 m ? 12 m ? 6 m was constructed with bricks of
dimensions 8 cm ? 6 cm. If 60% of the wall consists of bricks used for the construction is
___________ lakhs.
A. 45
B. 30
C. 40
D. 75
Answer : A
Solution :
Volume of wall = 30 ? 12 ? 6 = 2160 m
3
= 2160 ? 106 cm
3
Total volume of bricks required = 2160 ? 106 ? 0.6 cm
3
= 1296 ? 106 cm
3
Volume of one brick = 8 ? 6 ? 6 = 288 cm
3
? No. of bricks required
= 4.5 ? 10
6
= 45 lakhs
5.Hima Das was _______ only Indian athlete to win _____________ gold for India.
A. the, many
B. an, the
C. an, a
4
D. the, a
Answer : D
Solution :
Hima Das was the only Indian athlete to win a gold for India.
6.Population of state X increased by x% and the population of state Y increased by y% from
2001 to 2011. Assume that x is greater than y. Let P be the ratio of the population of state X
to state Y in a given year. The percentage increase in P from 2001 to 2011 is_____________
A. x ? y
B.
C.
D.
Answer : C
Solution :
Let population of X is ?A? in 2001
and Population of Y is ?B? in 2001
? Population of A in 2011
& Population of B in 2011
Given,
5
% increase in P
7.The Newspaper report that over 500 hectares of tribal land spread across 28 tribal
settlements in Mohinitampuram forest division have already been ?alienated?. A top forest
official said, ?First the tribals are duped out of their land holdings. Second, the families thus
rendered landless are often forced to encroach further into the forests?.
On the basis of the information available in the paragraph, _______ is/are responsible for
duping the tribals.
A. The newspaper
B. Landless families
C. forest officials
D. it cannot be inferred who
Answer : D
Solution :
?it cannot be inferred who?
From given information, nobody can be held responsible.
8.An oil tank can be filled by pipe X in 5 hours and pipe Y in 4 hours, each pump working on
its own. When the oil tank is full and the drainage hole is open, the oil is drained in 20 hours.
6
If initially the tank was empty and someone started the two pumps together but left the
drainage hole open, how many hours will it tak for the tank to be filled? (Assume that the rate
of drainage is independent of the head)
A. 2.50
B. 1.50
C. 2.00
D. 4.00
Answer : A
Solution :
Pipe X will fill how much in one hour tank
Pipe Y will fill how much in one hour tank
Drainage will drain out how much water in 1 hour tank
? Total tank filled in one hour
tank gets filled in = 1 hour
? Full (i) tank gets filled in
9.Mohan, the manager, wants his four workers to work in pairs. No paper should work for
more than 5 hours. Ram and Johan have worked together for 5 hours. Krishna and Amir have
7
worked as a team for 2 hours. Krishan does not want to work with Ram whom should mohan
allot to work with Johan, if we wants all the workers to continue working?
A. Amir
B. Krishna
C. Ram
D. None of the three
Answer : B
Solution :
Conditions given:
(i) Ram & John have worked for 5 hours.
(ii) Krishna doesn?t want to work with Ram.
(iii) No pair should work beyond 5 hours.
Hence, Krishna should work with John to satisfy the above conditions.
10.?Popular Hindi fiction, despite ? or perhaps because of ? its wide reach, often does not
appear in our cinema. As ideals that viewers are meant to look up to rather than identify with,
Hindi film protagonisits usually read books of apsirational value: textbooks, English books,
or high value literature?.
Which one of the following CANNOT be inferred from the paragraph above?
A. Textbooks, English books or high literature have apsirational value, but not popular Hindi
fiction
B. People do not look up to writers of textbooks, English book or high value literature
C. Though popular hindi fiction was wide readh, it often does not appear in the movies
D. Protagonists in Hindi movies, being ideals for viewers, read only books of aspirational
value.
Answer : B
Solution :
People do not look up to writers of textbooks, English book or high value literature.
8
Civil Engineering
11.What is curl of the vector field 2x
2
yi + 5z
2
j - 4yzk?
A. - 14zi - 2x
2
k
B. 6zi + 4xj - 2x
2
k
C. 6zi + 8xyj + 2x
2
yk
D. -14zi + 6yj + 2x
2
k
Answer : A
Solution :
12.Analysis of a water sample revealed that the sample contains the following species.
9
Concentrations of which of the species will be required to compute alkalinity?
A.
B.
C.
D.
Answer : A
Solution :
H2CO3 and HCO3
-
never come together
13.The value of the function f(x) is given at n distinct values of x and its value is to be
interpolated at the point x
*
using all the n points. The estimate is obtained first by the
Lagrange polynomial, denoted by IL, and then by the Newton polynomial, denoted by IN.
Which one of the following statements is correct?
A. IL is always greater than IN
B. No definite relation exists between IL and IN.
C. IL is always less than IN
D. IL and IN are always equal
Answer : B
Solution :
Lagrange?s form is more efficient when you have to interpolate several data sets on the same
data point.
Newton?s form is more efficient when you have to interpolate data incrementally. So no
relationship between both.
14.If the fineness modulus of a sample of the fine aggregates is 4.3, the mean size of the
particles in the sample is between
10
A. 150 ?m and 300 ?m
B. 2.36 mm and 4.75 mm
C. 300 ?m and 600 ?m
D. 1.18 mm and 2.36 mm
Answer : D
Solution :
150 ?m, 300 ?m, 600 ?m, 1.18 mm,
2.36 mm, 4.75 mm, 10 mm, 20 mm,
40 mm, 80 mm
150 ? 1
300 ? 2
600 ? 3
4.75 - 6
15.The command area of a canal grows only one crop, i.e., wheat. The base period of wheat
is 120 days and its total water requirement, ?, is 40 cm. If the canal discharge is 2 m
3
/s, the
area, in hectares, rounded off to the nearest integer, which could be irrigated (neglecting all
losses) is ______________
Answer :
Solution :
B = 120 days
? = 0.4 m
and ? = 8.64B/D
? D = 2592 ha per (m
3
/s)
? For 2m
3
/sec water, area will be 5184 ha
11
16.The characteristic compressive strength of concrete required in a project is 25 MPa and
standard deviation in the observed compressive strength expected at site is 4 MPa. The
average compressive strength of cubes tested at different water-cement (w/c) ratios using the
same material as is used for the project is given in the table.
The water-cement ratio (in percent, round off to the lower integer) to be used in the mix
is________
Answer :
Solution :
fck = 25 ; ? = 4 MPa
fm = fck + 1.65? = 31.6 MPa
Using interpolation
= 46.7 (Rounded off to the lowest integer).
17.A solid sphere of radius, r, and made of material with density ?s, is moving through the
atmosphere (constant pressure, p) with a velocity, ?. The net force ONLY due to atmospheric
pressure (Fp) acting on the sphere at any time, t, is
A.
B. Zero
C. ?r
2
p
D. 4?r
2
p
Answer : B
Solution :
Force = area ? P
12
Net force will be zero as pressure acts from all sides.
18.An earthen dam of height H is made of cohesive soil whose cohesion and unit weight are c
and ?, respectively. If the factor of safety against cohesion is Fc, the Taylor?s stability
A.
B.
C.
D.
Answer : C
Solution :
Taylor?s stability number,
19.A closed thin walled tube has thickness, t, mean enclosed area within the boundary of the
centrline of tube?s thickness, Am, and shear stress ?. Torsional moment of resistance, T of the
section would be
A.
B.
13
C.
D.
Answer : A
Solution :
20.For a channel section subjected to a downward vertical shear force at its centroid, which
one of the following represents the correct distribution of shear stress in flange and web?
A.
B.
C.
14
D.
Answer : C
Solution :
Standard result
21.The degree of static indeterminancy of the plane frame is shown in the figure is ________
Answer :
Solution :
Ds = 3C ? R'
C = 6
Ds = (3 ? 6 ? 2) ? 1 (due to hinge)
= 15
15
22.Structural failures considered in the mechanistic method of bituminous pavement design
are
A. Shear and slippage
B. Fatique and Rutting
C. Fatique and shear
D. Rutting and shear
Answer : B
Solution :
As per IRC66:2012
23.Which one of the options contains ONLY primary air pollutants?
A. Ozone and peroxyacetyl nitrate
B. Nitrogen oxides and peroxyacetyl nitrate
C. Hydrocarbons and nitrogen oxides
D. Hydrocarbons and ozone
Answer : C
Solution :
Ozone and PAN are secondary air pollutants.
24.The following inequality is true for all x close to 0.
What is the value of
A. 2
B. 1/2
C. 0
16
D. 1
Answer : A
Solution :
It is form
L?s hospital rule (differentiate)
Putting 0 everywhere ? still form.
Differentiating numerator and denominator again,
25.The velocity field in a flow system is given by v = 2i + (x + y)j + (xyz)k. The acceleration
of the fluid at (1, 1, 2) is
A. j + k
B. 2i + 10 k
C. 4j + 10k
D. 4i + 12 k
Answer : C
Solution :
17
and
= 2 + (x + y) + (xyz)(0) + 0
and
= 2(yz) + (x + y)(xz) + (xyz)(xy) + 0
az = 2(1 ? 2) + (1 + 1)(1 ? 2) + (1 ? 1
? 2) (1?1)
= 10k
Therefore,
26.A steel column is restrained against both translation and rotation at one end and is
restrained only against rotation but free to translate at the other end. Theoretical and design
(IS: 800 ? 2007) values, respectively, of effective length factor of the column are
18
A. 1.0 and 1.0
B. 1.2 and 1.0
C. 1.2 and 1.2
D. 1.0 and 1.2
Answer : D
Solution :
As per IS:800-2007
27.Euclindean norm (length) of the vector [4 ?2 ? 6]
T
is
A. ?48
B. ?24
C. ?12
D. ?56
Answer : D
Solution :
The Euclidean norm assigns to each vector the length of its arrow. Because of this,
the Euclidean norm is often known as the magnitude. So,
Length
28.An inflow hydrograph is routed through a reservoir to produce an outflow hydrograph.
The peak flow of the inflow hydrograph is PI and the time of occurrence of the peak is tI. The
peak flow of the outflow hydrograph is P0 and the time of occurance of the peak is t0. Which
one of the following statements is correct?
A. PI < P0 and tI > t0
B. PI > P0 and tI > t0
C. PI < P0 and tI < t0
D. PI > P0 and tI < t0
Answer : D
Solution :
19
Pl > Po ; tl < to
29.Construction of a new building founded on a clayey soil was completed in January In
January 2014, the average consolidation settlement of the foundation in clay was recorded as
10 mm. The ultimate consolidation settlement was estimated in design as 40 mm.
Considering double drainage to occur at the clayey soil site, the expected consolidation
settlement in January 2019 (in mm, round off to the nearest integer) will be _____________
Answer :
Solution :
Ultimate consolidation = 40 mm
Recorded consolidation = 10 mm
? Total recorded consolidation
? 40 ? 0.375
20
30.The notation ?SC? as per Indian standard Soil Classification System refers to
A. Clayey silt
B. Sandy clay
C. Calyey sand
D. Silty clay
Answer : C
Solution :
SC : clayey sand
31.The speed-density relationship in a mid-block section of a highway follows the
Greenshield?s model. If the free flow speed is vf and the jam density is kj, the maximum flow
observed on this ection is
A.
B.
C. fvkj
D.
Answer : D
Solution :
?(1)
21
32.An anisotropic soil deposit has coefficient of permeability in vertical and horizontal
directions as kz and kx, respectively. For constructing a flow net, the horizontal dimension of
the problem?s geometry is transformed by a multiplying factor of
A.
B.
C.
D.
Answer : C
Solution :
Flow net for anisotropic soil.
?(i)
If we transformed geometry in x direction let x cordinate be transformed to the new
coordinate xt by the transformation.
22
?(ii)
From eq. (i) & (ii),
Hence prove
So, multiplied factor
33.The Laplace transform of sinh (at) is
A.
B.
C.
D.
Answer : C
Solution :
Laplace transform of sinh (at) =
23
34.The data from a closed traverse survey PQRS (run in the clockwise direction) are given in
the table
The closing error for the traverse PQRS (in degrees) is________
Answer :
Solution :
n = 4 (number of sides of closed traverse)
(2n ? 4) ? 90? = 360?
so, error in included angle
= (88 + 92 + 94 + 89) ? 360 = +3?
35.A vehicle is moving on a road of grade +4% at a speed of 20 m/s. Consider the coefficient
of rolling friction as 0.46 and acceleration due to gravity as 10 m/s
2
. On applying brakes to
reach a speed of 10 m/s, the required braking distance (in m, round off to nearest integer)
along the horizontal, is ______.
Answer :
Solution :
Given: grade = +4%
V1 = 20 m/sec.
f = 0.46
g = 10 m/sec.
V1 = 10 m/sec.
24
We know,
36.A broad gauge railway line passes through a horizontal curved section (radius = 875 m) of
length 200 m. The allowable speed on this portion is 100 km/h. For calculating the cant,
consider the gauge as centre-to-centre distance between the rail heads, equal to 1750mm, The
maximum permissible cant (in mm, round off to 1 decimal place) with respect to the centreto-
centre distance between the rail heads is ______.
Answer :
Solution :
Given data:
R = 875 mm
Allowable speed = 100 kmph
Gauge length G = 1750 mm
Allowable cant
37.When a specimen of M25 concrete is loaded to a stress level of 12.5 MPa, a strain of 500
? 10
?6
is recorded. If this load is allowed to stand for a long time, the strain increases to 1000
? 10
?6
. In accordance with provisions of IS: 456-2000, considering the long-term effects, the
effective modulus of elasticity of the concrete (in MPa) is ________
Answer :
Solution :
25
Short term strain = 500 ? 10
?6
Long term strain = 1000 ? 10
?6
So, creep coefficient,
? = 1
Long-term effective modulus
= 12500 N/mm
2
= 12500 MPa
or
38.The probability density function of a continuous random variable distributed uniformly
between x and y (for y > x) is
A.
B. x ? y
C. y ? x
D.
Answer : D
Solution :
Probability density function of a uniformly distributed random variable.
26
39.The uniform arrival and uniform service rates observed on an approach road to a
signalized intersection are 20 and 50 vehicles/minutes, respectively. For this signal, the red
time is 30 s, the effective green time is 30 s, and the cycle length is 60s. Assuming that
initially there are no vehicles in the queue, the average delay per vehicle using the approach
road during a cycle length (in s, round off to 2 decimal places) is _______
Answer :
Solution :
Average delay per vehicle
= 12.5 sec
40.A rolled I-section beam is supported on a 75 mm wide bearing plate as shown in the
figure. Thickness of flange and web of the I-section are 20 mm and 8mm, respectively. Root
27
radius of the I-section is 10mm. Assuming: material yield stress,
fy = 250 MPa and partial safety factor for material, ?mo = 1.10
As per IS: 800-2007, the web bearing strength (in kN, round off to 2 decimal places) of the
beam is _______
Answer :
Solution :
Effective area in bearing = [75 + 2.5 (flange thickness + root radius)] ? 8
= [75 + 2.5 (20 + 10)] ? 8
= 1200 mm
2
so, web bearing strength
= 272.73 kN
41.The critical bending compressive stress in the extreme fibre of a structural steel section is
1000 MPa. It is given that the yield strength of the steel is 250 MPa, width of flange is 250
mm and thickness of flange is 15 mm. As per the provisions of IS: 800-2007, the
nondimensional slendeness ratio of the steel crosssection is
28
A. 0.50
B. 2.00
C. 0.25
D. 0.75
Answer : A
Solution :
Non-dimensional slenderness ratio
42.At the foot of a spillyway, water flows at a depth of 23 cm with a velocity of 8.1 m/s, as
shown in the figure.
The flow enters as an M-3 profile in the long wide rectangular channel with bed
slope and Manning?s n = 0.A hydraulic jump is formed at a certain distance from
the foot of the spillway. Assume the acceleration due to gravity, g = 9.81 m/s
2
. Just before the
hydraulic jump, the depth of flow y1 (in m, round off to 2 decimal places) is _________
Answer :
Solution :
Given data:
y = 0.23 m
V = 8.1 m/sec.
Slope,
29
h = 0.015
g = 9.81 m/sec
2
q = yV = 8.1 ? 0.23
= 1.863 m
3
/sec/m
It is given that flow enters as an M-3 profile in the long wide rectangular channel with bed
slope
From manning equation at M3 profile section.
[for wide channel R = y]
The flow profile will follow normal depth (yn) after jump.
For wide rectangular channel,
Here, yn = y 2 = 1.11 m
30
Again,
? y 1 = 0.417 m < y c [supercritical]
43.Consider the reactor shown in the figure. The concentration (in mg/l) of a compound in
the influent and effluent are C0 and C, flow rate through the reactor is Q m
3
/h respectively.
The compound is degraded in the reactor following the first order reactions. The mixing
condition of the reactor Complete Mix Flow Reactor (CMFR) or a plug-flow reactor (PFR).
The length of the reactor can be adjusted in these two mixing conditions to LCMFR and
LPER while keeping the cross-section of the reactor constant. Assuming steady state and for
C/C0 = 0.8, the value of LCMFR/LPER (round off to 2 decimal places) is _______
Answer :
Solution :
A = constant
Q = AL
For plug flow
[ detention time for plug flow reaction]
For completely mix = C =
[ detention time for completely mix reaction]
31
Also,
44.A series of perpendicular offsets taken from a curved boundary wall to a straight survey
line at an interval of 6 m are 1.22, 1.67, 2.04, 2.34, 2.14, 1.87, and 1.15 m. The area (in m2,
round off to 2 decimal places) boundary by the survey line, curved boundary wall, the first
and the last offsets, determined using Simpson?s rule, is _______.
Answer :
Solution :
Area by simpson?s rule
45.A water treatment plant treats 6000 m
3
of water per day. As a part of the treatment
process, discrete particles are required to be settled in a clarifier. A column test indicates that
an overflow rate of 1.5 m per hour would produce the desired removal of particles through
32
settling in the clarifier having a depth of 3.0 m. The volume of the required clarifier, (in m
3
,
round off to 1 decimal place) would be
Answer :
Solution :
Given data:
Flow rate = 6000 m
3
/day
Over flow rate = 1.5 m/hour
= 1.5 ? 24 m/day = 36 m/day
Flow area
= 166.67 m
2
Volume required for clarifier = Flow area ? depth
= 166.67 ? 3 = 500 m
3
46.A flexible pavement has the following class of loads during a particular hour of the day.
i. 80 buses with 2-axles (each axle load of 40 kN);
ii. 160 trucks with 2-axles (front and rear axle loads of 40 kN and 80 kN, respectively)
The equivalent standard axle load repetitions for this vehicle combination as per IRC:37-2012
would be
A. 320
B. 250
C. 240
D. 180
Answer : D
Solution :
33
= 5 + 5 + 10 + 160
= 180
47.Constant head permeability tests were performed on two soil specimens, S1 and SThe
ratio of height of the two specimens (LS1: LS2) is 1.5, the ratio of the diameter of specimens
(DS1:DS2) is 0.5, and the ratio of the constant head (hs1:hs2) applied on the specimens is 2.0. If
the discharge from both the specimens is equal, the ratio of the permeability of the soil
specimens (ks1:ks2) is ________
Answer :
Solution :
For constant head permeability test,
Q ? discharge
L ? length of specimen
a ? area of cross-section of specimen
h ? constant head
Given,
34
48.A long uniformly distributed load of 10 kN/m and a concentrated load of 60 kN are
moving together on the beam ABCD shown in the figure (not drawn to scale). The relative
positions of the two loads are not fixed. The maximum shear force (in kN, round off to the
nearest integer) caused at the internal hinge B due to the two loads is __________
Answer :
Solution :
35
Maximum
49.A square footing of 2m sides rests on the surface of a homogeneous soil bed having the
properties: cohesion c = 24 kPa, angle of internal friction ? = 25?, and unit weight ? = 18
kN/m
3
. Terzaghi?s bearing capacity factor ? = 25? are Nc = 25.1, Nq = 12.7, N? = 9.7, N?c =
14.8, N?q = 5.6, and N?? = 3.The ultimate bearing capacity of the foundation (in kPa, round
off to 2 decimal places) is ______.
Answer :
Solution :
Here, ? < 29
o
Footing rests on the ground
Hence, q = 0
so,
use, accordingly.
50.The dimensions of a soil sampler are given in the table.
36
For this sampler, the outside clearance ratio (in percent, round off to 2 decimal places) is
_________.
Answer :
Solution :
Given:
D4 = 90 mm
D2 = 100 mm
51.A plane frame shown in the figure (not to scale) has linear elastic springs at node H. The
spring constants are kx = ky = 5 ? 10
5
kN/m
3
and k? = 3 ? 10
5
kNm/rad.
For the externally applied moment of 30 kNm at node F, the rotation (in degrees, round off to
3 decimals) observed in the rotational spring at node H is ________
Answer :
FirstRanker.com - FirstRanker's Choice
2
GATE CE 2019 Set 2: Questions & Solutions
General Aptitude
1.Daytime temperature in Delhi can ______ 40?C
A. Peak
B. reach
C. get
D. stand
Answer : B
Solution :
Daytime temperature in Delhi can reach 40?C
2.The growth rate of ABC Motors in 2017 was the same ________ XYZ Motors in 2016 .
A. As those of
B. As that off
C. As that of
D. As off
Answer : C
Solution :
The growth rate of ABC Motors in 2017 was the same as that of XYZ Motors in 2016.
3.Suresh wanted to lay a new carpet in his new mansion with an area of 70 55 sq. mts.
However an area of 550 sq. mts had to be left out for flower pots. If the cost of carpet is Rs.
50 per sq. mts, how much money (in Rs.) will be spent by Suresh for the carpet now?
A. Rs. 1,65,000
B. Rs. 1,92,500
C. Rs. 1,27,500
D. Rs. 2,75,000
Answer : A
3
Solution :
Area of mansion = 70 ? 55 = 3850 m
2
Area for flower pots = 550 m
2
? Area left for carpet = 3850 ? 550 = 3300m
2
? Cost = 3300 ? 50 = 165000
4.A retaining wall with measurements 30 m ? 12 m ? 6 m was constructed with bricks of
dimensions 8 cm ? 6 cm. If 60% of the wall consists of bricks used for the construction is
___________ lakhs.
A. 45
B. 30
C. 40
D. 75
Answer : A
Solution :
Volume of wall = 30 ? 12 ? 6 = 2160 m
3
= 2160 ? 106 cm
3
Total volume of bricks required = 2160 ? 106 ? 0.6 cm
3
= 1296 ? 106 cm
3
Volume of one brick = 8 ? 6 ? 6 = 288 cm
3
? No. of bricks required
= 4.5 ? 10
6
= 45 lakhs
5.Hima Das was _______ only Indian athlete to win _____________ gold for India.
A. the, many
B. an, the
C. an, a
4
D. the, a
Answer : D
Solution :
Hima Das was the only Indian athlete to win a gold for India.
6.Population of state X increased by x% and the population of state Y increased by y% from
2001 to 2011. Assume that x is greater than y. Let P be the ratio of the population of state X
to state Y in a given year. The percentage increase in P from 2001 to 2011 is_____________
A. x ? y
B.
C.
D.
Answer : C
Solution :
Let population of X is ?A? in 2001
and Population of Y is ?B? in 2001
? Population of A in 2011
& Population of B in 2011
Given,
5
% increase in P
7.The Newspaper report that over 500 hectares of tribal land spread across 28 tribal
settlements in Mohinitampuram forest division have already been ?alienated?. A top forest
official said, ?First the tribals are duped out of their land holdings. Second, the families thus
rendered landless are often forced to encroach further into the forests?.
On the basis of the information available in the paragraph, _______ is/are responsible for
duping the tribals.
A. The newspaper
B. Landless families
C. forest officials
D. it cannot be inferred who
Answer : D
Solution :
?it cannot be inferred who?
From given information, nobody can be held responsible.
8.An oil tank can be filled by pipe X in 5 hours and pipe Y in 4 hours, each pump working on
its own. When the oil tank is full and the drainage hole is open, the oil is drained in 20 hours.
6
If initially the tank was empty and someone started the two pumps together but left the
drainage hole open, how many hours will it tak for the tank to be filled? (Assume that the rate
of drainage is independent of the head)
A. 2.50
B. 1.50
C. 2.00
D. 4.00
Answer : A
Solution :
Pipe X will fill how much in one hour tank
Pipe Y will fill how much in one hour tank
Drainage will drain out how much water in 1 hour tank
? Total tank filled in one hour
tank gets filled in = 1 hour
? Full (i) tank gets filled in
9.Mohan, the manager, wants his four workers to work in pairs. No paper should work for
more than 5 hours. Ram and Johan have worked together for 5 hours. Krishna and Amir have
7
worked as a team for 2 hours. Krishan does not want to work with Ram whom should mohan
allot to work with Johan, if we wants all the workers to continue working?
A. Amir
B. Krishna
C. Ram
D. None of the three
Answer : B
Solution :
Conditions given:
(i) Ram & John have worked for 5 hours.
(ii) Krishna doesn?t want to work with Ram.
(iii) No pair should work beyond 5 hours.
Hence, Krishna should work with John to satisfy the above conditions.
10.?Popular Hindi fiction, despite ? or perhaps because of ? its wide reach, often does not
appear in our cinema. As ideals that viewers are meant to look up to rather than identify with,
Hindi film protagonisits usually read books of apsirational value: textbooks, English books,
or high value literature?.
Which one of the following CANNOT be inferred from the paragraph above?
A. Textbooks, English books or high literature have apsirational value, but not popular Hindi
fiction
B. People do not look up to writers of textbooks, English book or high value literature
C. Though popular hindi fiction was wide readh, it often does not appear in the movies
D. Protagonists in Hindi movies, being ideals for viewers, read only books of aspirational
value.
Answer : B
Solution :
People do not look up to writers of textbooks, English book or high value literature.
8
Civil Engineering
11.What is curl of the vector field 2x
2
yi + 5z
2
j - 4yzk?
A. - 14zi - 2x
2
k
B. 6zi + 4xj - 2x
2
k
C. 6zi + 8xyj + 2x
2
yk
D. -14zi + 6yj + 2x
2
k
Answer : A
Solution :
12.Analysis of a water sample revealed that the sample contains the following species.
9
Concentrations of which of the species will be required to compute alkalinity?
A.
B.
C.
D.
Answer : A
Solution :
H2CO3 and HCO3
-
never come together
13.The value of the function f(x) is given at n distinct values of x and its value is to be
interpolated at the point x
*
using all the n points. The estimate is obtained first by the
Lagrange polynomial, denoted by IL, and then by the Newton polynomial, denoted by IN.
Which one of the following statements is correct?
A. IL is always greater than IN
B. No definite relation exists between IL and IN.
C. IL is always less than IN
D. IL and IN are always equal
Answer : B
Solution :
Lagrange?s form is more efficient when you have to interpolate several data sets on the same
data point.
Newton?s form is more efficient when you have to interpolate data incrementally. So no
relationship between both.
14.If the fineness modulus of a sample of the fine aggregates is 4.3, the mean size of the
particles in the sample is between
10
A. 150 ?m and 300 ?m
B. 2.36 mm and 4.75 mm
C. 300 ?m and 600 ?m
D. 1.18 mm and 2.36 mm
Answer : D
Solution :
150 ?m, 300 ?m, 600 ?m, 1.18 mm,
2.36 mm, 4.75 mm, 10 mm, 20 mm,
40 mm, 80 mm
150 ? 1
300 ? 2
600 ? 3
4.75 - 6
15.The command area of a canal grows only one crop, i.e., wheat. The base period of wheat
is 120 days and its total water requirement, ?, is 40 cm. If the canal discharge is 2 m
3
/s, the
area, in hectares, rounded off to the nearest integer, which could be irrigated (neglecting all
losses) is ______________
Answer :
Solution :
B = 120 days
? = 0.4 m
and ? = 8.64B/D
? D = 2592 ha per (m
3
/s)
? For 2m
3
/sec water, area will be 5184 ha
11
16.The characteristic compressive strength of concrete required in a project is 25 MPa and
standard deviation in the observed compressive strength expected at site is 4 MPa. The
average compressive strength of cubes tested at different water-cement (w/c) ratios using the
same material as is used for the project is given in the table.
The water-cement ratio (in percent, round off to the lower integer) to be used in the mix
is________
Answer :
Solution :
fck = 25 ; ? = 4 MPa
fm = fck + 1.65? = 31.6 MPa
Using interpolation
= 46.7 (Rounded off to the lowest integer).
17.A solid sphere of radius, r, and made of material with density ?s, is moving through the
atmosphere (constant pressure, p) with a velocity, ?. The net force ONLY due to atmospheric
pressure (Fp) acting on the sphere at any time, t, is
A.
B. Zero
C. ?r
2
p
D. 4?r
2
p
Answer : B
Solution :
Force = area ? P
12
Net force will be zero as pressure acts from all sides.
18.An earthen dam of height H is made of cohesive soil whose cohesion and unit weight are c
and ?, respectively. If the factor of safety against cohesion is Fc, the Taylor?s stability
A.
B.
C.
D.
Answer : C
Solution :
Taylor?s stability number,
19.A closed thin walled tube has thickness, t, mean enclosed area within the boundary of the
centrline of tube?s thickness, Am, and shear stress ?. Torsional moment of resistance, T of the
section would be
A.
B.
13
C.
D.
Answer : A
Solution :
20.For a channel section subjected to a downward vertical shear force at its centroid, which
one of the following represents the correct distribution of shear stress in flange and web?
A.
B.
C.
14
D.
Answer : C
Solution :
Standard result
21.The degree of static indeterminancy of the plane frame is shown in the figure is ________
Answer :
Solution :
Ds = 3C ? R'
C = 6
Ds = (3 ? 6 ? 2) ? 1 (due to hinge)
= 15
15
22.Structural failures considered in the mechanistic method of bituminous pavement design
are
A. Shear and slippage
B. Fatique and Rutting
C. Fatique and shear
D. Rutting and shear
Answer : B
Solution :
As per IRC66:2012
23.Which one of the options contains ONLY primary air pollutants?
A. Ozone and peroxyacetyl nitrate
B. Nitrogen oxides and peroxyacetyl nitrate
C. Hydrocarbons and nitrogen oxides
D. Hydrocarbons and ozone
Answer : C
Solution :
Ozone and PAN are secondary air pollutants.
24.The following inequality is true for all x close to 0.
What is the value of
A. 2
B. 1/2
C. 0
16
D. 1
Answer : A
Solution :
It is form
L?s hospital rule (differentiate)
Putting 0 everywhere ? still form.
Differentiating numerator and denominator again,
25.The velocity field in a flow system is given by v = 2i + (x + y)j + (xyz)k. The acceleration
of the fluid at (1, 1, 2) is
A. j + k
B. 2i + 10 k
C. 4j + 10k
D. 4i + 12 k
Answer : C
Solution :
17
and
= 2 + (x + y) + (xyz)(0) + 0
and
= 2(yz) + (x + y)(xz) + (xyz)(xy) + 0
az = 2(1 ? 2) + (1 + 1)(1 ? 2) + (1 ? 1
? 2) (1?1)
= 10k
Therefore,
26.A steel column is restrained against both translation and rotation at one end and is
restrained only against rotation but free to translate at the other end. Theoretical and design
(IS: 800 ? 2007) values, respectively, of effective length factor of the column are
18
A. 1.0 and 1.0
B. 1.2 and 1.0
C. 1.2 and 1.2
D. 1.0 and 1.2
Answer : D
Solution :
As per IS:800-2007
27.Euclindean norm (length) of the vector [4 ?2 ? 6]
T
is
A. ?48
B. ?24
C. ?12
D. ?56
Answer : D
Solution :
The Euclidean norm assigns to each vector the length of its arrow. Because of this,
the Euclidean norm is often known as the magnitude. So,
Length
28.An inflow hydrograph is routed through a reservoir to produce an outflow hydrograph.
The peak flow of the inflow hydrograph is PI and the time of occurrence of the peak is tI. The
peak flow of the outflow hydrograph is P0 and the time of occurance of the peak is t0. Which
one of the following statements is correct?
A. PI < P0 and tI > t0
B. PI > P0 and tI > t0
C. PI < P0 and tI < t0
D. PI > P0 and tI < t0
Answer : D
Solution :
19
Pl > Po ; tl < to
29.Construction of a new building founded on a clayey soil was completed in January In
January 2014, the average consolidation settlement of the foundation in clay was recorded as
10 mm. The ultimate consolidation settlement was estimated in design as 40 mm.
Considering double drainage to occur at the clayey soil site, the expected consolidation
settlement in January 2019 (in mm, round off to the nearest integer) will be _____________
Answer :
Solution :
Ultimate consolidation = 40 mm
Recorded consolidation = 10 mm
? Total recorded consolidation
? 40 ? 0.375
20
30.The notation ?SC? as per Indian standard Soil Classification System refers to
A. Clayey silt
B. Sandy clay
C. Calyey sand
D. Silty clay
Answer : C
Solution :
SC : clayey sand
31.The speed-density relationship in a mid-block section of a highway follows the
Greenshield?s model. If the free flow speed is vf and the jam density is kj, the maximum flow
observed on this ection is
A.
B.
C. fvkj
D.
Answer : D
Solution :
?(1)
21
32.An anisotropic soil deposit has coefficient of permeability in vertical and horizontal
directions as kz and kx, respectively. For constructing a flow net, the horizontal dimension of
the problem?s geometry is transformed by a multiplying factor of
A.
B.
C.
D.
Answer : C
Solution :
Flow net for anisotropic soil.
?(i)
If we transformed geometry in x direction let x cordinate be transformed to the new
coordinate xt by the transformation.
22
?(ii)
From eq. (i) & (ii),
Hence prove
So, multiplied factor
33.The Laplace transform of sinh (at) is
A.
B.
C.
D.
Answer : C
Solution :
Laplace transform of sinh (at) =
23
34.The data from a closed traverse survey PQRS (run in the clockwise direction) are given in
the table
The closing error for the traverse PQRS (in degrees) is________
Answer :
Solution :
n = 4 (number of sides of closed traverse)
(2n ? 4) ? 90? = 360?
so, error in included angle
= (88 + 92 + 94 + 89) ? 360 = +3?
35.A vehicle is moving on a road of grade +4% at a speed of 20 m/s. Consider the coefficient
of rolling friction as 0.46 and acceleration due to gravity as 10 m/s
2
. On applying brakes to
reach a speed of 10 m/s, the required braking distance (in m, round off to nearest integer)
along the horizontal, is ______.
Answer :
Solution :
Given: grade = +4%
V1 = 20 m/sec.
f = 0.46
g = 10 m/sec.
V1 = 10 m/sec.
24
We know,
36.A broad gauge railway line passes through a horizontal curved section (radius = 875 m) of
length 200 m. The allowable speed on this portion is 100 km/h. For calculating the cant,
consider the gauge as centre-to-centre distance between the rail heads, equal to 1750mm, The
maximum permissible cant (in mm, round off to 1 decimal place) with respect to the centreto-
centre distance between the rail heads is ______.
Answer :
Solution :
Given data:
R = 875 mm
Allowable speed = 100 kmph
Gauge length G = 1750 mm
Allowable cant
37.When a specimen of M25 concrete is loaded to a stress level of 12.5 MPa, a strain of 500
? 10
?6
is recorded. If this load is allowed to stand for a long time, the strain increases to 1000
? 10
?6
. In accordance with provisions of IS: 456-2000, considering the long-term effects, the
effective modulus of elasticity of the concrete (in MPa) is ________
Answer :
Solution :
25
Short term strain = 500 ? 10
?6
Long term strain = 1000 ? 10
?6
So, creep coefficient,
? = 1
Long-term effective modulus
= 12500 N/mm
2
= 12500 MPa
or
38.The probability density function of a continuous random variable distributed uniformly
between x and y (for y > x) is
A.
B. x ? y
C. y ? x
D.
Answer : D
Solution :
Probability density function of a uniformly distributed random variable.
26
39.The uniform arrival and uniform service rates observed on an approach road to a
signalized intersection are 20 and 50 vehicles/minutes, respectively. For this signal, the red
time is 30 s, the effective green time is 30 s, and the cycle length is 60s. Assuming that
initially there are no vehicles in the queue, the average delay per vehicle using the approach
road during a cycle length (in s, round off to 2 decimal places) is _______
Answer :
Solution :
Average delay per vehicle
= 12.5 sec
40.A rolled I-section beam is supported on a 75 mm wide bearing plate as shown in the
figure. Thickness of flange and web of the I-section are 20 mm and 8mm, respectively. Root
27
radius of the I-section is 10mm. Assuming: material yield stress,
fy = 250 MPa and partial safety factor for material, ?mo = 1.10
As per IS: 800-2007, the web bearing strength (in kN, round off to 2 decimal places) of the
beam is _______
Answer :
Solution :
Effective area in bearing = [75 + 2.5 (flange thickness + root radius)] ? 8
= [75 + 2.5 (20 + 10)] ? 8
= 1200 mm
2
so, web bearing strength
= 272.73 kN
41.The critical bending compressive stress in the extreme fibre of a structural steel section is
1000 MPa. It is given that the yield strength of the steel is 250 MPa, width of flange is 250
mm and thickness of flange is 15 mm. As per the provisions of IS: 800-2007, the
nondimensional slendeness ratio of the steel crosssection is
28
A. 0.50
B. 2.00
C. 0.25
D. 0.75
Answer : A
Solution :
Non-dimensional slenderness ratio
42.At the foot of a spillyway, water flows at a depth of 23 cm with a velocity of 8.1 m/s, as
shown in the figure.
The flow enters as an M-3 profile in the long wide rectangular channel with bed
slope and Manning?s n = 0.A hydraulic jump is formed at a certain distance from
the foot of the spillway. Assume the acceleration due to gravity, g = 9.81 m/s
2
. Just before the
hydraulic jump, the depth of flow y1 (in m, round off to 2 decimal places) is _________
Answer :
Solution :
Given data:
y = 0.23 m
V = 8.1 m/sec.
Slope,
29
h = 0.015
g = 9.81 m/sec
2
q = yV = 8.1 ? 0.23
= 1.863 m
3
/sec/m
It is given that flow enters as an M-3 profile in the long wide rectangular channel with bed
slope
From manning equation at M3 profile section.
[for wide channel R = y]
The flow profile will follow normal depth (yn) after jump.
For wide rectangular channel,
Here, yn = y 2 = 1.11 m
30
Again,
? y 1 = 0.417 m < y c [supercritical]
43.Consider the reactor shown in the figure. The concentration (in mg/l) of a compound in
the influent and effluent are C0 and C, flow rate through the reactor is Q m
3
/h respectively.
The compound is degraded in the reactor following the first order reactions. The mixing
condition of the reactor Complete Mix Flow Reactor (CMFR) or a plug-flow reactor (PFR).
The length of the reactor can be adjusted in these two mixing conditions to LCMFR and
LPER while keeping the cross-section of the reactor constant. Assuming steady state and for
C/C0 = 0.8, the value of LCMFR/LPER (round off to 2 decimal places) is _______
Answer :
Solution :
A = constant
Q = AL
For plug flow
[ detention time for plug flow reaction]
For completely mix = C =
[ detention time for completely mix reaction]
31
Also,
44.A series of perpendicular offsets taken from a curved boundary wall to a straight survey
line at an interval of 6 m are 1.22, 1.67, 2.04, 2.34, 2.14, 1.87, and 1.15 m. The area (in m2,
round off to 2 decimal places) boundary by the survey line, curved boundary wall, the first
and the last offsets, determined using Simpson?s rule, is _______.
Answer :
Solution :
Area by simpson?s rule
45.A water treatment plant treats 6000 m
3
of water per day. As a part of the treatment
process, discrete particles are required to be settled in a clarifier. A column test indicates that
an overflow rate of 1.5 m per hour would produce the desired removal of particles through
32
settling in the clarifier having a depth of 3.0 m. The volume of the required clarifier, (in m
3
,
round off to 1 decimal place) would be
Answer :
Solution :
Given data:
Flow rate = 6000 m
3
/day
Over flow rate = 1.5 m/hour
= 1.5 ? 24 m/day = 36 m/day
Flow area
= 166.67 m
2
Volume required for clarifier = Flow area ? depth
= 166.67 ? 3 = 500 m
3
46.A flexible pavement has the following class of loads during a particular hour of the day.
i. 80 buses with 2-axles (each axle load of 40 kN);
ii. 160 trucks with 2-axles (front and rear axle loads of 40 kN and 80 kN, respectively)
The equivalent standard axle load repetitions for this vehicle combination as per IRC:37-2012
would be
A. 320
B. 250
C. 240
D. 180
Answer : D
Solution :
33
= 5 + 5 + 10 + 160
= 180
47.Constant head permeability tests were performed on two soil specimens, S1 and SThe
ratio of height of the two specimens (LS1: LS2) is 1.5, the ratio of the diameter of specimens
(DS1:DS2) is 0.5, and the ratio of the constant head (hs1:hs2) applied on the specimens is 2.0. If
the discharge from both the specimens is equal, the ratio of the permeability of the soil
specimens (ks1:ks2) is ________
Answer :
Solution :
For constant head permeability test,
Q ? discharge
L ? length of specimen
a ? area of cross-section of specimen
h ? constant head
Given,
34
48.A long uniformly distributed load of 10 kN/m and a concentrated load of 60 kN are
moving together on the beam ABCD shown in the figure (not drawn to scale). The relative
positions of the two loads are not fixed. The maximum shear force (in kN, round off to the
nearest integer) caused at the internal hinge B due to the two loads is __________
Answer :
Solution :
35
Maximum
49.A square footing of 2m sides rests on the surface of a homogeneous soil bed having the
properties: cohesion c = 24 kPa, angle of internal friction ? = 25?, and unit weight ? = 18
kN/m
3
. Terzaghi?s bearing capacity factor ? = 25? are Nc = 25.1, Nq = 12.7, N? = 9.7, N?c =
14.8, N?q = 5.6, and N?? = 3.The ultimate bearing capacity of the foundation (in kPa, round
off to 2 decimal places) is ______.
Answer :
Solution :
Here, ? < 29
o
Footing rests on the ground
Hence, q = 0
so,
use, accordingly.
50.The dimensions of a soil sampler are given in the table.
36
For this sampler, the outside clearance ratio (in percent, round off to 2 decimal places) is
_________.
Answer :
Solution :
Given:
D4 = 90 mm
D2 = 100 mm
51.A plane frame shown in the figure (not to scale) has linear elastic springs at node H. The
spring constants are kx = ky = 5 ? 10
5
kN/m
3
and k? = 3 ? 10
5
kNm/rad.
For the externally applied moment of 30 kNm at node F, the rotation (in degrees, round off to
3 decimals) observed in the rotational spring at node H is ________
Answer :
37
Solution :
R ? 3 = 30
? R = 10 kN
From right side of FBD
R ? 3 = K? . ?
= 10
?4
rad = 0.0057
= 0.006 degree
52.Chlorine is used as the disinfectant in a municipal water treatment plant. It achieves 50
percent of disinfection efficiency measured in terms of killing the indicator microorganisms
(E-Coli) in 3 minutes. The minimum time required to achieve 99 percent disinfection
efficiency would be
A. 9.93 minutes
B. 11.93 minutes
C. 21.93 minutes
D. 19.93 minutes
Answer : D
Solution :
Disinfection eff.
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2
GATE CE 2019 Set 2: Questions & Solutions
General Aptitude
1.Daytime temperature in Delhi can ______ 40?C
A. Peak
B. reach
C. get
D. stand
Answer : B
Solution :
Daytime temperature in Delhi can reach 40?C
2.The growth rate of ABC Motors in 2017 was the same ________ XYZ Motors in 2016 .
A. As those of
B. As that off
C. As that of
D. As off
Answer : C
Solution :
The growth rate of ABC Motors in 2017 was the same as that of XYZ Motors in 2016.
3.Suresh wanted to lay a new carpet in his new mansion with an area of 70 55 sq. mts.
However an area of 550 sq. mts had to be left out for flower pots. If the cost of carpet is Rs.
50 per sq. mts, how much money (in Rs.) will be spent by Suresh for the carpet now?
A. Rs. 1,65,000
B. Rs. 1,92,500
C. Rs. 1,27,500
D. Rs. 2,75,000
Answer : A
3
Solution :
Area of mansion = 70 ? 55 = 3850 m
2
Area for flower pots = 550 m
2
? Area left for carpet = 3850 ? 550 = 3300m
2
? Cost = 3300 ? 50 = 165000
4.A retaining wall with measurements 30 m ? 12 m ? 6 m was constructed with bricks of
dimensions 8 cm ? 6 cm. If 60% of the wall consists of bricks used for the construction is
___________ lakhs.
A. 45
B. 30
C. 40
D. 75
Answer : A
Solution :
Volume of wall = 30 ? 12 ? 6 = 2160 m
3
= 2160 ? 106 cm
3
Total volume of bricks required = 2160 ? 106 ? 0.6 cm
3
= 1296 ? 106 cm
3
Volume of one brick = 8 ? 6 ? 6 = 288 cm
3
? No. of bricks required
= 4.5 ? 10
6
= 45 lakhs
5.Hima Das was _______ only Indian athlete to win _____________ gold for India.
A. the, many
B. an, the
C. an, a
4
D. the, a
Answer : D
Solution :
Hima Das was the only Indian athlete to win a gold for India.
6.Population of state X increased by x% and the population of state Y increased by y% from
2001 to 2011. Assume that x is greater than y. Let P be the ratio of the population of state X
to state Y in a given year. The percentage increase in P from 2001 to 2011 is_____________
A. x ? y
B.
C.
D.
Answer : C
Solution :
Let population of X is ?A? in 2001
and Population of Y is ?B? in 2001
? Population of A in 2011
& Population of B in 2011
Given,
5
% increase in P
7.The Newspaper report that over 500 hectares of tribal land spread across 28 tribal
settlements in Mohinitampuram forest division have already been ?alienated?. A top forest
official said, ?First the tribals are duped out of their land holdings. Second, the families thus
rendered landless are often forced to encroach further into the forests?.
On the basis of the information available in the paragraph, _______ is/are responsible for
duping the tribals.
A. The newspaper
B. Landless families
C. forest officials
D. it cannot be inferred who
Answer : D
Solution :
?it cannot be inferred who?
From given information, nobody can be held responsible.
8.An oil tank can be filled by pipe X in 5 hours and pipe Y in 4 hours, each pump working on
its own. When the oil tank is full and the drainage hole is open, the oil is drained in 20 hours.
6
If initially the tank was empty and someone started the two pumps together but left the
drainage hole open, how many hours will it tak for the tank to be filled? (Assume that the rate
of drainage is independent of the head)
A. 2.50
B. 1.50
C. 2.00
D. 4.00
Answer : A
Solution :
Pipe X will fill how much in one hour tank
Pipe Y will fill how much in one hour tank
Drainage will drain out how much water in 1 hour tank
? Total tank filled in one hour
tank gets filled in = 1 hour
? Full (i) tank gets filled in
9.Mohan, the manager, wants his four workers to work in pairs. No paper should work for
more than 5 hours. Ram and Johan have worked together for 5 hours. Krishna and Amir have
7
worked as a team for 2 hours. Krishan does not want to work with Ram whom should mohan
allot to work with Johan, if we wants all the workers to continue working?
A. Amir
B. Krishna
C. Ram
D. None of the three
Answer : B
Solution :
Conditions given:
(i) Ram & John have worked for 5 hours.
(ii) Krishna doesn?t want to work with Ram.
(iii) No pair should work beyond 5 hours.
Hence, Krishna should work with John to satisfy the above conditions.
10.?Popular Hindi fiction, despite ? or perhaps because of ? its wide reach, often does not
appear in our cinema. As ideals that viewers are meant to look up to rather than identify with,
Hindi film protagonisits usually read books of apsirational value: textbooks, English books,
or high value literature?.
Which one of the following CANNOT be inferred from the paragraph above?
A. Textbooks, English books or high literature have apsirational value, but not popular Hindi
fiction
B. People do not look up to writers of textbooks, English book or high value literature
C. Though popular hindi fiction was wide readh, it often does not appear in the movies
D. Protagonists in Hindi movies, being ideals for viewers, read only books of aspirational
value.
Answer : B
Solution :
People do not look up to writers of textbooks, English book or high value literature.
8
Civil Engineering
11.What is curl of the vector field 2x
2
yi + 5z
2
j - 4yzk?
A. - 14zi - 2x
2
k
B. 6zi + 4xj - 2x
2
k
C. 6zi + 8xyj + 2x
2
yk
D. -14zi + 6yj + 2x
2
k
Answer : A
Solution :
12.Analysis of a water sample revealed that the sample contains the following species.
9
Concentrations of which of the species will be required to compute alkalinity?
A.
B.
C.
D.
Answer : A
Solution :
H2CO3 and HCO3
-
never come together
13.The value of the function f(x) is given at n distinct values of x and its value is to be
interpolated at the point x
*
using all the n points. The estimate is obtained first by the
Lagrange polynomial, denoted by IL, and then by the Newton polynomial, denoted by IN.
Which one of the following statements is correct?
A. IL is always greater than IN
B. No definite relation exists between IL and IN.
C. IL is always less than IN
D. IL and IN are always equal
Answer : B
Solution :
Lagrange?s form is more efficient when you have to interpolate several data sets on the same
data point.
Newton?s form is more efficient when you have to interpolate data incrementally. So no
relationship between both.
14.If the fineness modulus of a sample of the fine aggregates is 4.3, the mean size of the
particles in the sample is between
10
A. 150 ?m and 300 ?m
B. 2.36 mm and 4.75 mm
C. 300 ?m and 600 ?m
D. 1.18 mm and 2.36 mm
Answer : D
Solution :
150 ?m, 300 ?m, 600 ?m, 1.18 mm,
2.36 mm, 4.75 mm, 10 mm, 20 mm,
40 mm, 80 mm
150 ? 1
300 ? 2
600 ? 3
4.75 - 6
15.The command area of a canal grows only one crop, i.e., wheat. The base period of wheat
is 120 days and its total water requirement, ?, is 40 cm. If the canal discharge is 2 m
3
/s, the
area, in hectares, rounded off to the nearest integer, which could be irrigated (neglecting all
losses) is ______________
Answer :
Solution :
B = 120 days
? = 0.4 m
and ? = 8.64B/D
? D = 2592 ha per (m
3
/s)
? For 2m
3
/sec water, area will be 5184 ha
11
16.The characteristic compressive strength of concrete required in a project is 25 MPa and
standard deviation in the observed compressive strength expected at site is 4 MPa. The
average compressive strength of cubes tested at different water-cement (w/c) ratios using the
same material as is used for the project is given in the table.
The water-cement ratio (in percent, round off to the lower integer) to be used in the mix
is________
Answer :
Solution :
fck = 25 ; ? = 4 MPa
fm = fck + 1.65? = 31.6 MPa
Using interpolation
= 46.7 (Rounded off to the lowest integer).
17.A solid sphere of radius, r, and made of material with density ?s, is moving through the
atmosphere (constant pressure, p) with a velocity, ?. The net force ONLY due to atmospheric
pressure (Fp) acting on the sphere at any time, t, is
A.
B. Zero
C. ?r
2
p
D. 4?r
2
p
Answer : B
Solution :
Force = area ? P
12
Net force will be zero as pressure acts from all sides.
18.An earthen dam of height H is made of cohesive soil whose cohesion and unit weight are c
and ?, respectively. If the factor of safety against cohesion is Fc, the Taylor?s stability
A.
B.
C.
D.
Answer : C
Solution :
Taylor?s stability number,
19.A closed thin walled tube has thickness, t, mean enclosed area within the boundary of the
centrline of tube?s thickness, Am, and shear stress ?. Torsional moment of resistance, T of the
section would be
A.
B.
13
C.
D.
Answer : A
Solution :
20.For a channel section subjected to a downward vertical shear force at its centroid, which
one of the following represents the correct distribution of shear stress in flange and web?
A.
B.
C.
14
D.
Answer : C
Solution :
Standard result
21.The degree of static indeterminancy of the plane frame is shown in the figure is ________
Answer :
Solution :
Ds = 3C ? R'
C = 6
Ds = (3 ? 6 ? 2) ? 1 (due to hinge)
= 15
15
22.Structural failures considered in the mechanistic method of bituminous pavement design
are
A. Shear and slippage
B. Fatique and Rutting
C. Fatique and shear
D. Rutting and shear
Answer : B
Solution :
As per IRC66:2012
23.Which one of the options contains ONLY primary air pollutants?
A. Ozone and peroxyacetyl nitrate
B. Nitrogen oxides and peroxyacetyl nitrate
C. Hydrocarbons and nitrogen oxides
D. Hydrocarbons and ozone
Answer : C
Solution :
Ozone and PAN are secondary air pollutants.
24.The following inequality is true for all x close to 0.
What is the value of
A. 2
B. 1/2
C. 0
16
D. 1
Answer : A
Solution :
It is form
L?s hospital rule (differentiate)
Putting 0 everywhere ? still form.
Differentiating numerator and denominator again,
25.The velocity field in a flow system is given by v = 2i + (x + y)j + (xyz)k. The acceleration
of the fluid at (1, 1, 2) is
A. j + k
B. 2i + 10 k
C. 4j + 10k
D. 4i + 12 k
Answer : C
Solution :
17
and
= 2 + (x + y) + (xyz)(0) + 0
and
= 2(yz) + (x + y)(xz) + (xyz)(xy) + 0
az = 2(1 ? 2) + (1 + 1)(1 ? 2) + (1 ? 1
? 2) (1?1)
= 10k
Therefore,
26.A steel column is restrained against both translation and rotation at one end and is
restrained only against rotation but free to translate at the other end. Theoretical and design
(IS: 800 ? 2007) values, respectively, of effective length factor of the column are
18
A. 1.0 and 1.0
B. 1.2 and 1.0
C. 1.2 and 1.2
D. 1.0 and 1.2
Answer : D
Solution :
As per IS:800-2007
27.Euclindean norm (length) of the vector [4 ?2 ? 6]
T
is
A. ?48
B. ?24
C. ?12
D. ?56
Answer : D
Solution :
The Euclidean norm assigns to each vector the length of its arrow. Because of this,
the Euclidean norm is often known as the magnitude. So,
Length
28.An inflow hydrograph is routed through a reservoir to produce an outflow hydrograph.
The peak flow of the inflow hydrograph is PI and the time of occurrence of the peak is tI. The
peak flow of the outflow hydrograph is P0 and the time of occurance of the peak is t0. Which
one of the following statements is correct?
A. PI < P0 and tI > t0
B. PI > P0 and tI > t0
C. PI < P0 and tI < t0
D. PI > P0 and tI < t0
Answer : D
Solution :
19
Pl > Po ; tl < to
29.Construction of a new building founded on a clayey soil was completed in January In
January 2014, the average consolidation settlement of the foundation in clay was recorded as
10 mm. The ultimate consolidation settlement was estimated in design as 40 mm.
Considering double drainage to occur at the clayey soil site, the expected consolidation
settlement in January 2019 (in mm, round off to the nearest integer) will be _____________
Answer :
Solution :
Ultimate consolidation = 40 mm
Recorded consolidation = 10 mm
? Total recorded consolidation
? 40 ? 0.375
20
30.The notation ?SC? as per Indian standard Soil Classification System refers to
A. Clayey silt
B. Sandy clay
C. Calyey sand
D. Silty clay
Answer : C
Solution :
SC : clayey sand
31.The speed-density relationship in a mid-block section of a highway follows the
Greenshield?s model. If the free flow speed is vf and the jam density is kj, the maximum flow
observed on this ection is
A.
B.
C. fvkj
D.
Answer : D
Solution :
?(1)
21
32.An anisotropic soil deposit has coefficient of permeability in vertical and horizontal
directions as kz and kx, respectively. For constructing a flow net, the horizontal dimension of
the problem?s geometry is transformed by a multiplying factor of
A.
B.
C.
D.
Answer : C
Solution :
Flow net for anisotropic soil.
?(i)
If we transformed geometry in x direction let x cordinate be transformed to the new
coordinate xt by the transformation.
22
?(ii)
From eq. (i) & (ii),
Hence prove
So, multiplied factor
33.The Laplace transform of sinh (at) is
A.
B.
C.
D.
Answer : C
Solution :
Laplace transform of sinh (at) =
23
34.The data from a closed traverse survey PQRS (run in the clockwise direction) are given in
the table
The closing error for the traverse PQRS (in degrees) is________
Answer :
Solution :
n = 4 (number of sides of closed traverse)
(2n ? 4) ? 90? = 360?
so, error in included angle
= (88 + 92 + 94 + 89) ? 360 = +3?
35.A vehicle is moving on a road of grade +4% at a speed of 20 m/s. Consider the coefficient
of rolling friction as 0.46 and acceleration due to gravity as 10 m/s
2
. On applying brakes to
reach a speed of 10 m/s, the required braking distance (in m, round off to nearest integer)
along the horizontal, is ______.
Answer :
Solution :
Given: grade = +4%
V1 = 20 m/sec.
f = 0.46
g = 10 m/sec.
V1 = 10 m/sec.
24
We know,
36.A broad gauge railway line passes through a horizontal curved section (radius = 875 m) of
length 200 m. The allowable speed on this portion is 100 km/h. For calculating the cant,
consider the gauge as centre-to-centre distance between the rail heads, equal to 1750mm, The
maximum permissible cant (in mm, round off to 1 decimal place) with respect to the centreto-
centre distance between the rail heads is ______.
Answer :
Solution :
Given data:
R = 875 mm
Allowable speed = 100 kmph
Gauge length G = 1750 mm
Allowable cant
37.When a specimen of M25 concrete is loaded to a stress level of 12.5 MPa, a strain of 500
? 10
?6
is recorded. If this load is allowed to stand for a long time, the strain increases to 1000
? 10
?6
. In accordance with provisions of IS: 456-2000, considering the long-term effects, the
effective modulus of elasticity of the concrete (in MPa) is ________
Answer :
Solution :
25
Short term strain = 500 ? 10
?6
Long term strain = 1000 ? 10
?6
So, creep coefficient,
? = 1
Long-term effective modulus
= 12500 N/mm
2
= 12500 MPa
or
38.The probability density function of a continuous random variable distributed uniformly
between x and y (for y > x) is
A.
B. x ? y
C. y ? x
D.
Answer : D
Solution :
Probability density function of a uniformly distributed random variable.
26
39.The uniform arrival and uniform service rates observed on an approach road to a
signalized intersection are 20 and 50 vehicles/minutes, respectively. For this signal, the red
time is 30 s, the effective green time is 30 s, and the cycle length is 60s. Assuming that
initially there are no vehicles in the queue, the average delay per vehicle using the approach
road during a cycle length (in s, round off to 2 decimal places) is _______
Answer :
Solution :
Average delay per vehicle
= 12.5 sec
40.A rolled I-section beam is supported on a 75 mm wide bearing plate as shown in the
figure. Thickness of flange and web of the I-section are 20 mm and 8mm, respectively. Root
27
radius of the I-section is 10mm. Assuming: material yield stress,
fy = 250 MPa and partial safety factor for material, ?mo = 1.10
As per IS: 800-2007, the web bearing strength (in kN, round off to 2 decimal places) of the
beam is _______
Answer :
Solution :
Effective area in bearing = [75 + 2.5 (flange thickness + root radius)] ? 8
= [75 + 2.5 (20 + 10)] ? 8
= 1200 mm
2
so, web bearing strength
= 272.73 kN
41.The critical bending compressive stress in the extreme fibre of a structural steel section is
1000 MPa. It is given that the yield strength of the steel is 250 MPa, width of flange is 250
mm and thickness of flange is 15 mm. As per the provisions of IS: 800-2007, the
nondimensional slendeness ratio of the steel crosssection is
28
A. 0.50
B. 2.00
C. 0.25
D. 0.75
Answer : A
Solution :
Non-dimensional slenderness ratio
42.At the foot of a spillyway, water flows at a depth of 23 cm with a velocity of 8.1 m/s, as
shown in the figure.
The flow enters as an M-3 profile in the long wide rectangular channel with bed
slope and Manning?s n = 0.A hydraulic jump is formed at a certain distance from
the foot of the spillway. Assume the acceleration due to gravity, g = 9.81 m/s
2
. Just before the
hydraulic jump, the depth of flow y1 (in m, round off to 2 decimal places) is _________
Answer :
Solution :
Given data:
y = 0.23 m
V = 8.1 m/sec.
Slope,
29
h = 0.015
g = 9.81 m/sec
2
q = yV = 8.1 ? 0.23
= 1.863 m
3
/sec/m
It is given that flow enters as an M-3 profile in the long wide rectangular channel with bed
slope
From manning equation at M3 profile section.
[for wide channel R = y]
The flow profile will follow normal depth (yn) after jump.
For wide rectangular channel,
Here, yn = y 2 = 1.11 m
30
Again,
? y 1 = 0.417 m < y c [supercritical]
43.Consider the reactor shown in the figure. The concentration (in mg/l) of a compound in
the influent and effluent are C0 and C, flow rate through the reactor is Q m
3
/h respectively.
The compound is degraded in the reactor following the first order reactions. The mixing
condition of the reactor Complete Mix Flow Reactor (CMFR) or a plug-flow reactor (PFR).
The length of the reactor can be adjusted in these two mixing conditions to LCMFR and
LPER while keeping the cross-section of the reactor constant. Assuming steady state and for
C/C0 = 0.8, the value of LCMFR/LPER (round off to 2 decimal places) is _______
Answer :
Solution :
A = constant
Q = AL
For plug flow
[ detention time for plug flow reaction]
For completely mix = C =
[ detention time for completely mix reaction]
31
Also,
44.A series of perpendicular offsets taken from a curved boundary wall to a straight survey
line at an interval of 6 m are 1.22, 1.67, 2.04, 2.34, 2.14, 1.87, and 1.15 m. The area (in m2,
round off to 2 decimal places) boundary by the survey line, curved boundary wall, the first
and the last offsets, determined using Simpson?s rule, is _______.
Answer :
Solution :
Area by simpson?s rule
45.A water treatment plant treats 6000 m
3
of water per day. As a part of the treatment
process, discrete particles are required to be settled in a clarifier. A column test indicates that
an overflow rate of 1.5 m per hour would produce the desired removal of particles through
32
settling in the clarifier having a depth of 3.0 m. The volume of the required clarifier, (in m
3
,
round off to 1 decimal place) would be
Answer :
Solution :
Given data:
Flow rate = 6000 m
3
/day
Over flow rate = 1.5 m/hour
= 1.5 ? 24 m/day = 36 m/day
Flow area
= 166.67 m
2
Volume required for clarifier = Flow area ? depth
= 166.67 ? 3 = 500 m
3
46.A flexible pavement has the following class of loads during a particular hour of the day.
i. 80 buses with 2-axles (each axle load of 40 kN);
ii. 160 trucks with 2-axles (front and rear axle loads of 40 kN and 80 kN, respectively)
The equivalent standard axle load repetitions for this vehicle combination as per IRC:37-2012
would be
A. 320
B. 250
C. 240
D. 180
Answer : D
Solution :
33
= 5 + 5 + 10 + 160
= 180
47.Constant head permeability tests were performed on two soil specimens, S1 and SThe
ratio of height of the two specimens (LS1: LS2) is 1.5, the ratio of the diameter of specimens
(DS1:DS2) is 0.5, and the ratio of the constant head (hs1:hs2) applied on the specimens is 2.0. If
the discharge from both the specimens is equal, the ratio of the permeability of the soil
specimens (ks1:ks2) is ________
Answer :
Solution :
For constant head permeability test,
Q ? discharge
L ? length of specimen
a ? area of cross-section of specimen
h ? constant head
Given,
34
48.A long uniformly distributed load of 10 kN/m and a concentrated load of 60 kN are
moving together on the beam ABCD shown in the figure (not drawn to scale). The relative
positions of the two loads are not fixed. The maximum shear force (in kN, round off to the
nearest integer) caused at the internal hinge B due to the two loads is __________
Answer :
Solution :
35
Maximum
49.A square footing of 2m sides rests on the surface of a homogeneous soil bed having the
properties: cohesion c = 24 kPa, angle of internal friction ? = 25?, and unit weight ? = 18
kN/m
3
. Terzaghi?s bearing capacity factor ? = 25? are Nc = 25.1, Nq = 12.7, N? = 9.7, N?c =
14.8, N?q = 5.6, and N?? = 3.The ultimate bearing capacity of the foundation (in kPa, round
off to 2 decimal places) is ______.
Answer :
Solution :
Here, ? < 29
o
Footing rests on the ground
Hence, q = 0
so,
use, accordingly.
50.The dimensions of a soil sampler are given in the table.
36
For this sampler, the outside clearance ratio (in percent, round off to 2 decimal places) is
_________.
Answer :
Solution :
Given:
D4 = 90 mm
D2 = 100 mm
51.A plane frame shown in the figure (not to scale) has linear elastic springs at node H. The
spring constants are kx = ky = 5 ? 10
5
kN/m
3
and k? = 3 ? 10
5
kNm/rad.
For the externally applied moment of 30 kNm at node F, the rotation (in degrees, round off to
3 decimals) observed in the rotational spring at node H is ________
Answer :
37
Solution :
R ? 3 = 30
? R = 10 kN
From right side of FBD
R ? 3 = K? . ?
= 10
?4
rad = 0.0057
= 0.006 degree
52.Chlorine is used as the disinfectant in a municipal water treatment plant. It achieves 50
percent of disinfection efficiency measured in terms of killing the indicator microorganisms
(E-Coli) in 3 minutes. The minimum time required to achieve 99 percent disinfection
efficiency would be
A. 9.93 minutes
B. 11.93 minutes
C. 21.93 minutes
D. 19.93 minutes
Answer : D
Solution :
Disinfection eff.
38
Again,
? t = 19.93 min.
53.A confined aquifer of 15 m constant thickness is sandwiched between two aquicludes as
shown in the figure (not drawn to scale)
The heads indicated by two piezometers P and Q are 55.2 m and 34.1 m, respectively. The
aquifer has a hydraulic conductivity of 80 m/ day and its effective porosity is 0.If the distance
between the piezometers is 2500 m, the time taken by the water to travel through the aquifer
from piezometer location P to Q (in days, round off to 1 decimal place) is ______.
Answer :
Solution :
Given,
FirstRanker.com - FirstRanker's Choice
2
GATE CE 2019 Set 2: Questions & Solutions
General Aptitude
1.Daytime temperature in Delhi can ______ 40?C
A. Peak
B. reach
C. get
D. stand
Answer : B
Solution :
Daytime temperature in Delhi can reach 40?C
2.The growth rate of ABC Motors in 2017 was the same ________ XYZ Motors in 2016 .
A. As those of
B. As that off
C. As that of
D. As off
Answer : C
Solution :
The growth rate of ABC Motors in 2017 was the same as that of XYZ Motors in 2016.
3.Suresh wanted to lay a new carpet in his new mansion with an area of 70 55 sq. mts.
However an area of 550 sq. mts had to be left out for flower pots. If the cost of carpet is Rs.
50 per sq. mts, how much money (in Rs.) will be spent by Suresh for the carpet now?
A. Rs. 1,65,000
B. Rs. 1,92,500
C. Rs. 1,27,500
D. Rs. 2,75,000
Answer : A
3
Solution :
Area of mansion = 70 ? 55 = 3850 m
2
Area for flower pots = 550 m
2
? Area left for carpet = 3850 ? 550 = 3300m
2
? Cost = 3300 ? 50 = 165000
4.A retaining wall with measurements 30 m ? 12 m ? 6 m was constructed with bricks of
dimensions 8 cm ? 6 cm. If 60% of the wall consists of bricks used for the construction is
___________ lakhs.
A. 45
B. 30
C. 40
D. 75
Answer : A
Solution :
Volume of wall = 30 ? 12 ? 6 = 2160 m
3
= 2160 ? 106 cm
3
Total volume of bricks required = 2160 ? 106 ? 0.6 cm
3
= 1296 ? 106 cm
3
Volume of one brick = 8 ? 6 ? 6 = 288 cm
3
? No. of bricks required
= 4.5 ? 10
6
= 45 lakhs
5.Hima Das was _______ only Indian athlete to win _____________ gold for India.
A. the, many
B. an, the
C. an, a
4
D. the, a
Answer : D
Solution :
Hima Das was the only Indian athlete to win a gold for India.
6.Population of state X increased by x% and the population of state Y increased by y% from
2001 to 2011. Assume that x is greater than y. Let P be the ratio of the population of state X
to state Y in a given year. The percentage increase in P from 2001 to 2011 is_____________
A. x ? y
B.
C.
D.
Answer : C
Solution :
Let population of X is ?A? in 2001
and Population of Y is ?B? in 2001
? Population of A in 2011
& Population of B in 2011
Given,
5
% increase in P
7.The Newspaper report that over 500 hectares of tribal land spread across 28 tribal
settlements in Mohinitampuram forest division have already been ?alienated?. A top forest
official said, ?First the tribals are duped out of their land holdings. Second, the families thus
rendered landless are often forced to encroach further into the forests?.
On the basis of the information available in the paragraph, _______ is/are responsible for
duping the tribals.
A. The newspaper
B. Landless families
C. forest officials
D. it cannot be inferred who
Answer : D
Solution :
?it cannot be inferred who?
From given information, nobody can be held responsible.
8.An oil tank can be filled by pipe X in 5 hours and pipe Y in 4 hours, each pump working on
its own. When the oil tank is full and the drainage hole is open, the oil is drained in 20 hours.
6
If initially the tank was empty and someone started the two pumps together but left the
drainage hole open, how many hours will it tak for the tank to be filled? (Assume that the rate
of drainage is independent of the head)
A. 2.50
B. 1.50
C. 2.00
D. 4.00
Answer : A
Solution :
Pipe X will fill how much in one hour tank
Pipe Y will fill how much in one hour tank
Drainage will drain out how much water in 1 hour tank
? Total tank filled in one hour
tank gets filled in = 1 hour
? Full (i) tank gets filled in
9.Mohan, the manager, wants his four workers to work in pairs. No paper should work for
more than 5 hours. Ram and Johan have worked together for 5 hours. Krishna and Amir have
7
worked as a team for 2 hours. Krishan does not want to work with Ram whom should mohan
allot to work with Johan, if we wants all the workers to continue working?
A. Amir
B. Krishna
C. Ram
D. None of the three
Answer : B
Solution :
Conditions given:
(i) Ram & John have worked for 5 hours.
(ii) Krishna doesn?t want to work with Ram.
(iii) No pair should work beyond 5 hours.
Hence, Krishna should work with John to satisfy the above conditions.
10.?Popular Hindi fiction, despite ? or perhaps because of ? its wide reach, often does not
appear in our cinema. As ideals that viewers are meant to look up to rather than identify with,
Hindi film protagonisits usually read books of apsirational value: textbooks, English books,
or high value literature?.
Which one of the following CANNOT be inferred from the paragraph above?
A. Textbooks, English books or high literature have apsirational value, but not popular Hindi
fiction
B. People do not look up to writers of textbooks, English book or high value literature
C. Though popular hindi fiction was wide readh, it often does not appear in the movies
D. Protagonists in Hindi movies, being ideals for viewers, read only books of aspirational
value.
Answer : B
Solution :
People do not look up to writers of textbooks, English book or high value literature.
8
Civil Engineering
11.What is curl of the vector field 2x
2
yi + 5z
2
j - 4yzk?
A. - 14zi - 2x
2
k
B. 6zi + 4xj - 2x
2
k
C. 6zi + 8xyj + 2x
2
yk
D. -14zi + 6yj + 2x
2
k
Answer : A
Solution :
12.Analysis of a water sample revealed that the sample contains the following species.
9
Concentrations of which of the species will be required to compute alkalinity?
A.
B.
C.
D.
Answer : A
Solution :
H2CO3 and HCO3
-
never come together
13.The value of the function f(x) is given at n distinct values of x and its value is to be
interpolated at the point x
*
using all the n points. The estimate is obtained first by the
Lagrange polynomial, denoted by IL, and then by the Newton polynomial, denoted by IN.
Which one of the following statements is correct?
A. IL is always greater than IN
B. No definite relation exists between IL and IN.
C. IL is always less than IN
D. IL and IN are always equal
Answer : B
Solution :
Lagrange?s form is more efficient when you have to interpolate several data sets on the same
data point.
Newton?s form is more efficient when you have to interpolate data incrementally. So no
relationship between both.
14.If the fineness modulus of a sample of the fine aggregates is 4.3, the mean size of the
particles in the sample is between
10
A. 150 ?m and 300 ?m
B. 2.36 mm and 4.75 mm
C. 300 ?m and 600 ?m
D. 1.18 mm and 2.36 mm
Answer : D
Solution :
150 ?m, 300 ?m, 600 ?m, 1.18 mm,
2.36 mm, 4.75 mm, 10 mm, 20 mm,
40 mm, 80 mm
150 ? 1
300 ? 2
600 ? 3
4.75 - 6
15.The command area of a canal grows only one crop, i.e., wheat. The base period of wheat
is 120 days and its total water requirement, ?, is 40 cm. If the canal discharge is 2 m
3
/s, the
area, in hectares, rounded off to the nearest integer, which could be irrigated (neglecting all
losses) is ______________
Answer :
Solution :
B = 120 days
? = 0.4 m
and ? = 8.64B/D
? D = 2592 ha per (m
3
/s)
? For 2m
3
/sec water, area will be 5184 ha
11
16.The characteristic compressive strength of concrete required in a project is 25 MPa and
standard deviation in the observed compressive strength expected at site is 4 MPa. The
average compressive strength of cubes tested at different water-cement (w/c) ratios using the
same material as is used for the project is given in the table.
The water-cement ratio (in percent, round off to the lower integer) to be used in the mix
is________
Answer :
Solution :
fck = 25 ; ? = 4 MPa
fm = fck + 1.65? = 31.6 MPa
Using interpolation
= 46.7 (Rounded off to the lowest integer).
17.A solid sphere of radius, r, and made of material with density ?s, is moving through the
atmosphere (constant pressure, p) with a velocity, ?. The net force ONLY due to atmospheric
pressure (Fp) acting on the sphere at any time, t, is
A.
B. Zero
C. ?r
2
p
D. 4?r
2
p
Answer : B
Solution :
Force = area ? P
12
Net force will be zero as pressure acts from all sides.
18.An earthen dam of height H is made of cohesive soil whose cohesion and unit weight are c
and ?, respectively. If the factor of safety against cohesion is Fc, the Taylor?s stability
A.
B.
C.
D.
Answer : C
Solution :
Taylor?s stability number,
19.A closed thin walled tube has thickness, t, mean enclosed area within the boundary of the
centrline of tube?s thickness, Am, and shear stress ?. Torsional moment of resistance, T of the
section would be
A.
B.
13
C.
D.
Answer : A
Solution :
20.For a channel section subjected to a downward vertical shear force at its centroid, which
one of the following represents the correct distribution of shear stress in flange and web?
A.
B.
C.
14
D.
Answer : C
Solution :
Standard result
21.The degree of static indeterminancy of the plane frame is shown in the figure is ________
Answer :
Solution :
Ds = 3C ? R'
C = 6
Ds = (3 ? 6 ? 2) ? 1 (due to hinge)
= 15
15
22.Structural failures considered in the mechanistic method of bituminous pavement design
are
A. Shear and slippage
B. Fatique and Rutting
C. Fatique and shear
D. Rutting and shear
Answer : B
Solution :
As per IRC66:2012
23.Which one of the options contains ONLY primary air pollutants?
A. Ozone and peroxyacetyl nitrate
B. Nitrogen oxides and peroxyacetyl nitrate
C. Hydrocarbons and nitrogen oxides
D. Hydrocarbons and ozone
Answer : C
Solution :
Ozone and PAN are secondary air pollutants.
24.The following inequality is true for all x close to 0.
What is the value of
A. 2
B. 1/2
C. 0
16
D. 1
Answer : A
Solution :
It is form
L?s hospital rule (differentiate)
Putting 0 everywhere ? still form.
Differentiating numerator and denominator again,
25.The velocity field in a flow system is given by v = 2i + (x + y)j + (xyz)k. The acceleration
of the fluid at (1, 1, 2) is
A. j + k
B. 2i + 10 k
C. 4j + 10k
D. 4i + 12 k
Answer : C
Solution :
17
and
= 2 + (x + y) + (xyz)(0) + 0
and
= 2(yz) + (x + y)(xz) + (xyz)(xy) + 0
az = 2(1 ? 2) + (1 + 1)(1 ? 2) + (1 ? 1
? 2) (1?1)
= 10k
Therefore,
26.A steel column is restrained against both translation and rotation at one end and is
restrained only against rotation but free to translate at the other end. Theoretical and design
(IS: 800 ? 2007) values, respectively, of effective length factor of the column are
18
A. 1.0 and 1.0
B. 1.2 and 1.0
C. 1.2 and 1.2
D. 1.0 and 1.2
Answer : D
Solution :
As per IS:800-2007
27.Euclindean norm (length) of the vector [4 ?2 ? 6]
T
is
A. ?48
B. ?24
C. ?12
D. ?56
Answer : D
Solution :
The Euclidean norm assigns to each vector the length of its arrow. Because of this,
the Euclidean norm is often known as the magnitude. So,
Length
28.An inflow hydrograph is routed through a reservoir to produce an outflow hydrograph.
The peak flow of the inflow hydrograph is PI and the time of occurrence of the peak is tI. The
peak flow of the outflow hydrograph is P0 and the time of occurance of the peak is t0. Which
one of the following statements is correct?
A. PI < P0 and tI > t0
B. PI > P0 and tI > t0
C. PI < P0 and tI < t0
D. PI > P0 and tI < t0
Answer : D
Solution :
19
Pl > Po ; tl < to
29.Construction of a new building founded on a clayey soil was completed in January In
January 2014, the average consolidation settlement of the foundation in clay was recorded as
10 mm. The ultimate consolidation settlement was estimated in design as 40 mm.
Considering double drainage to occur at the clayey soil site, the expected consolidation
settlement in January 2019 (in mm, round off to the nearest integer) will be _____________
Answer :
Solution :
Ultimate consolidation = 40 mm
Recorded consolidation = 10 mm
? Total recorded consolidation
? 40 ? 0.375
20
30.The notation ?SC? as per Indian standard Soil Classification System refers to
A. Clayey silt
B. Sandy clay
C. Calyey sand
D. Silty clay
Answer : C
Solution :
SC : clayey sand
31.The speed-density relationship in a mid-block section of a highway follows the
Greenshield?s model. If the free flow speed is vf and the jam density is kj, the maximum flow
observed on this ection is
A.
B.
C. fvkj
D.
Answer : D
Solution :
?(1)
21
32.An anisotropic soil deposit has coefficient of permeability in vertical and horizontal
directions as kz and kx, respectively. For constructing a flow net, the horizontal dimension of
the problem?s geometry is transformed by a multiplying factor of
A.
B.
C.
D.
Answer : C
Solution :
Flow net for anisotropic soil.
?(i)
If we transformed geometry in x direction let x cordinate be transformed to the new
coordinate xt by the transformation.
22
?(ii)
From eq. (i) & (ii),
Hence prove
So, multiplied factor
33.The Laplace transform of sinh (at) is
A.
B.
C.
D.
Answer : C
Solution :
Laplace transform of sinh (at) =
23
34.The data from a closed traverse survey PQRS (run in the clockwise direction) are given in
the table
The closing error for the traverse PQRS (in degrees) is________
Answer :
Solution :
n = 4 (number of sides of closed traverse)
(2n ? 4) ? 90? = 360?
so, error in included angle
= (88 + 92 + 94 + 89) ? 360 = +3?
35.A vehicle is moving on a road of grade +4% at a speed of 20 m/s. Consider the coefficient
of rolling friction as 0.46 and acceleration due to gravity as 10 m/s
2
. On applying brakes to
reach a speed of 10 m/s, the required braking distance (in m, round off to nearest integer)
along the horizontal, is ______.
Answer :
Solution :
Given: grade = +4%
V1 = 20 m/sec.
f = 0.46
g = 10 m/sec.
V1 = 10 m/sec.
24
We know,
36.A broad gauge railway line passes through a horizontal curved section (radius = 875 m) of
length 200 m. The allowable speed on this portion is 100 km/h. For calculating the cant,
consider the gauge as centre-to-centre distance between the rail heads, equal to 1750mm, The
maximum permissible cant (in mm, round off to 1 decimal place) with respect to the centreto-
centre distance between the rail heads is ______.
Answer :
Solution :
Given data:
R = 875 mm
Allowable speed = 100 kmph
Gauge length G = 1750 mm
Allowable cant
37.When a specimen of M25 concrete is loaded to a stress level of 12.5 MPa, a strain of 500
? 10
?6
is recorded. If this load is allowed to stand for a long time, the strain increases to 1000
? 10
?6
. In accordance with provisions of IS: 456-2000, considering the long-term effects, the
effective modulus of elasticity of the concrete (in MPa) is ________
Answer :
Solution :
25
Short term strain = 500 ? 10
?6
Long term strain = 1000 ? 10
?6
So, creep coefficient,
? = 1
Long-term effective modulus
= 12500 N/mm
2
= 12500 MPa
or
38.The probability density function of a continuous random variable distributed uniformly
between x and y (for y > x) is
A.
B. x ? y
C. y ? x
D.
Answer : D
Solution :
Probability density function of a uniformly distributed random variable.
26
39.The uniform arrival and uniform service rates observed on an approach road to a
signalized intersection are 20 and 50 vehicles/minutes, respectively. For this signal, the red
time is 30 s, the effective green time is 30 s, and the cycle length is 60s. Assuming that
initially there are no vehicles in the queue, the average delay per vehicle using the approach
road during a cycle length (in s, round off to 2 decimal places) is _______
Answer :
Solution :
Average delay per vehicle
= 12.5 sec
40.A rolled I-section beam is supported on a 75 mm wide bearing plate as shown in the
figure. Thickness of flange and web of the I-section are 20 mm and 8mm, respectively. Root
27
radius of the I-section is 10mm. Assuming: material yield stress,
fy = 250 MPa and partial safety factor for material, ?mo = 1.10
As per IS: 800-2007, the web bearing strength (in kN, round off to 2 decimal places) of the
beam is _______
Answer :
Solution :
Effective area in bearing = [75 + 2.5 (flange thickness + root radius)] ? 8
= [75 + 2.5 (20 + 10)] ? 8
= 1200 mm
2
so, web bearing strength
= 272.73 kN
41.The critical bending compressive stress in the extreme fibre of a structural steel section is
1000 MPa. It is given that the yield strength of the steel is 250 MPa, width of flange is 250
mm and thickness of flange is 15 mm. As per the provisions of IS: 800-2007, the
nondimensional slendeness ratio of the steel crosssection is
28
A. 0.50
B. 2.00
C. 0.25
D. 0.75
Answer : A
Solution :
Non-dimensional slenderness ratio
42.At the foot of a spillyway, water flows at a depth of 23 cm with a velocity of 8.1 m/s, as
shown in the figure.
The flow enters as an M-3 profile in the long wide rectangular channel with bed
slope and Manning?s n = 0.A hydraulic jump is formed at a certain distance from
the foot of the spillway. Assume the acceleration due to gravity, g = 9.81 m/s
2
. Just before the
hydraulic jump, the depth of flow y1 (in m, round off to 2 decimal places) is _________
Answer :
Solution :
Given data:
y = 0.23 m
V = 8.1 m/sec.
Slope,
29
h = 0.015
g = 9.81 m/sec
2
q = yV = 8.1 ? 0.23
= 1.863 m
3
/sec/m
It is given that flow enters as an M-3 profile in the long wide rectangular channel with bed
slope
From manning equation at M3 profile section.
[for wide channel R = y]
The flow profile will follow normal depth (yn) after jump.
For wide rectangular channel,
Here, yn = y 2 = 1.11 m
30
Again,
? y 1 = 0.417 m < y c [supercritical]
43.Consider the reactor shown in the figure. The concentration (in mg/l) of a compound in
the influent and effluent are C0 and C, flow rate through the reactor is Q m
3
/h respectively.
The compound is degraded in the reactor following the first order reactions. The mixing
condition of the reactor Complete Mix Flow Reactor (CMFR) or a plug-flow reactor (PFR).
The length of the reactor can be adjusted in these two mixing conditions to LCMFR and
LPER while keeping the cross-section of the reactor constant. Assuming steady state and for
C/C0 = 0.8, the value of LCMFR/LPER (round off to 2 decimal places) is _______
Answer :
Solution :
A = constant
Q = AL
For plug flow
[ detention time for plug flow reaction]
For completely mix = C =
[ detention time for completely mix reaction]
31
Also,
44.A series of perpendicular offsets taken from a curved boundary wall to a straight survey
line at an interval of 6 m are 1.22, 1.67, 2.04, 2.34, 2.14, 1.87, and 1.15 m. The area (in m2,
round off to 2 decimal places) boundary by the survey line, curved boundary wall, the first
and the last offsets, determined using Simpson?s rule, is _______.
Answer :
Solution :
Area by simpson?s rule
45.A water treatment plant treats 6000 m
3
of water per day. As a part of the treatment
process, discrete particles are required to be settled in a clarifier. A column test indicates that
an overflow rate of 1.5 m per hour would produce the desired removal of particles through
32
settling in the clarifier having a depth of 3.0 m. The volume of the required clarifier, (in m
3
,
round off to 1 decimal place) would be
Answer :
Solution :
Given data:
Flow rate = 6000 m
3
/day
Over flow rate = 1.5 m/hour
= 1.5 ? 24 m/day = 36 m/day
Flow area
= 166.67 m
2
Volume required for clarifier = Flow area ? depth
= 166.67 ? 3 = 500 m
3
46.A flexible pavement has the following class of loads during a particular hour of the day.
i. 80 buses with 2-axles (each axle load of 40 kN);
ii. 160 trucks with 2-axles (front and rear axle loads of 40 kN and 80 kN, respectively)
The equivalent standard axle load repetitions for this vehicle combination as per IRC:37-2012
would be
A. 320
B. 250
C. 240
D. 180
Answer : D
Solution :
33
= 5 + 5 + 10 + 160
= 180
47.Constant head permeability tests were performed on two soil specimens, S1 and SThe
ratio of height of the two specimens (LS1: LS2) is 1.5, the ratio of the diameter of specimens
(DS1:DS2) is 0.5, and the ratio of the constant head (hs1:hs2) applied on the specimens is 2.0. If
the discharge from both the specimens is equal, the ratio of the permeability of the soil
specimens (ks1:ks2) is ________
Answer :
Solution :
For constant head permeability test,
Q ? discharge
L ? length of specimen
a ? area of cross-section of specimen
h ? constant head
Given,
34
48.A long uniformly distributed load of 10 kN/m and a concentrated load of 60 kN are
moving together on the beam ABCD shown in the figure (not drawn to scale). The relative
positions of the two loads are not fixed. The maximum shear force (in kN, round off to the
nearest integer) caused at the internal hinge B due to the two loads is __________
Answer :
Solution :
35
Maximum
49.A square footing of 2m sides rests on the surface of a homogeneous soil bed having the
properties: cohesion c = 24 kPa, angle of internal friction ? = 25?, and unit weight ? = 18
kN/m
3
. Terzaghi?s bearing capacity factor ? = 25? are Nc = 25.1, Nq = 12.7, N? = 9.7, N?c =
14.8, N?q = 5.6, and N?? = 3.The ultimate bearing capacity of the foundation (in kPa, round
off to 2 decimal places) is ______.
Answer :
Solution :
Here, ? < 29
o
Footing rests on the ground
Hence, q = 0
so,
use, accordingly.
50.The dimensions of a soil sampler are given in the table.
36
For this sampler, the outside clearance ratio (in percent, round off to 2 decimal places) is
_________.
Answer :
Solution :
Given:
D4 = 90 mm
D2 = 100 mm
51.A plane frame shown in the figure (not to scale) has linear elastic springs at node H. The
spring constants are kx = ky = 5 ? 10
5
kN/m
3
and k? = 3 ? 10
5
kNm/rad.
For the externally applied moment of 30 kNm at node F, the rotation (in degrees, round off to
3 decimals) observed in the rotational spring at node H is ________
Answer :
37
Solution :
R ? 3 = 30
? R = 10 kN
From right side of FBD
R ? 3 = K? . ?
= 10
?4
rad = 0.0057
= 0.006 degree
52.Chlorine is used as the disinfectant in a municipal water treatment plant. It achieves 50
percent of disinfection efficiency measured in terms of killing the indicator microorganisms
(E-Coli) in 3 minutes. The minimum time required to achieve 99 percent disinfection
efficiency would be
A. 9.93 minutes
B. 11.93 minutes
C. 21.93 minutes
D. 19.93 minutes
Answer : D
Solution :
Disinfection eff.
38
Again,
? t = 19.93 min.
53.A confined aquifer of 15 m constant thickness is sandwiched between two aquicludes as
shown in the figure (not drawn to scale)
The heads indicated by two piezometers P and Q are 55.2 m and 34.1 m, respectively. The
aquifer has a hydraulic conductivity of 80 m/ day and its effective porosity is 0.If the distance
between the piezometers is 2500 m, the time taken by the water to travel through the aquifer
from piezometer location P to Q (in days, round off to 1 decimal place) is ______.
Answer :
Solution :
Given,
39
= 9.259 ? 10
?4
m/s
h = 55.2 ? 34.1 = 21.1 m
L = 2500 m
n = 0.25
B = 15 m
As per Darcy?s law,
V = ki
Seepage velocity
54.For a plane stress problem, the state of stress at a point P is represented by the stress
element as shown in the figure.
FirstRanker.com - FirstRanker's Choice
2
GATE CE 2019 Set 2: Questions & Solutions
General Aptitude
1.Daytime temperature in Delhi can ______ 40?C
A. Peak
B. reach
C. get
D. stand
Answer : B
Solution :
Daytime temperature in Delhi can reach 40?C
2.The growth rate of ABC Motors in 2017 was the same ________ XYZ Motors in 2016 .
A. As those of
B. As that off
C. As that of
D. As off
Answer : C
Solution :
The growth rate of ABC Motors in 2017 was the same as that of XYZ Motors in 2016.
3.Suresh wanted to lay a new carpet in his new mansion with an area of 70 55 sq. mts.
However an area of 550 sq. mts had to be left out for flower pots. If the cost of carpet is Rs.
50 per sq. mts, how much money (in Rs.) will be spent by Suresh for the carpet now?
A. Rs. 1,65,000
B. Rs. 1,92,500
C. Rs. 1,27,500
D. Rs. 2,75,000
Answer : A
3
Solution :
Area of mansion = 70 ? 55 = 3850 m
2
Area for flower pots = 550 m
2
? Area left for carpet = 3850 ? 550 = 3300m
2
? Cost = 3300 ? 50 = 165000
4.A retaining wall with measurements 30 m ? 12 m ? 6 m was constructed with bricks of
dimensions 8 cm ? 6 cm. If 60% of the wall consists of bricks used for the construction is
___________ lakhs.
A. 45
B. 30
C. 40
D. 75
Answer : A
Solution :
Volume of wall = 30 ? 12 ? 6 = 2160 m
3
= 2160 ? 106 cm
3
Total volume of bricks required = 2160 ? 106 ? 0.6 cm
3
= 1296 ? 106 cm
3
Volume of one brick = 8 ? 6 ? 6 = 288 cm
3
? No. of bricks required
= 4.5 ? 10
6
= 45 lakhs
5.Hima Das was _______ only Indian athlete to win _____________ gold for India.
A. the, many
B. an, the
C. an, a
4
D. the, a
Answer : D
Solution :
Hima Das was the only Indian athlete to win a gold for India.
6.Population of state X increased by x% and the population of state Y increased by y% from
2001 to 2011. Assume that x is greater than y. Let P be the ratio of the population of state X
to state Y in a given year. The percentage increase in P from 2001 to 2011 is_____________
A. x ? y
B.
C.
D.
Answer : C
Solution :
Let population of X is ?A? in 2001
and Population of Y is ?B? in 2001
? Population of A in 2011
& Population of B in 2011
Given,
5
% increase in P
7.The Newspaper report that over 500 hectares of tribal land spread across 28 tribal
settlements in Mohinitampuram forest division have already been ?alienated?. A top forest
official said, ?First the tribals are duped out of their land holdings. Second, the families thus
rendered landless are often forced to encroach further into the forests?.
On the basis of the information available in the paragraph, _______ is/are responsible for
duping the tribals.
A. The newspaper
B. Landless families
C. forest officials
D. it cannot be inferred who
Answer : D
Solution :
?it cannot be inferred who?
From given information, nobody can be held responsible.
8.An oil tank can be filled by pipe X in 5 hours and pipe Y in 4 hours, each pump working on
its own. When the oil tank is full and the drainage hole is open, the oil is drained in 20 hours.
6
If initially the tank was empty and someone started the two pumps together but left the
drainage hole open, how many hours will it tak for the tank to be filled? (Assume that the rate
of drainage is independent of the head)
A. 2.50
B. 1.50
C. 2.00
D. 4.00
Answer : A
Solution :
Pipe X will fill how much in one hour tank
Pipe Y will fill how much in one hour tank
Drainage will drain out how much water in 1 hour tank
? Total tank filled in one hour
tank gets filled in = 1 hour
? Full (i) tank gets filled in
9.Mohan, the manager, wants his four workers to work in pairs. No paper should work for
more than 5 hours. Ram and Johan have worked together for 5 hours. Krishna and Amir have
7
worked as a team for 2 hours. Krishan does not want to work with Ram whom should mohan
allot to work with Johan, if we wants all the workers to continue working?
A. Amir
B. Krishna
C. Ram
D. None of the three
Answer : B
Solution :
Conditions given:
(i) Ram & John have worked for 5 hours.
(ii) Krishna doesn?t want to work with Ram.
(iii) No pair should work beyond 5 hours.
Hence, Krishna should work with John to satisfy the above conditions.
10.?Popular Hindi fiction, despite ? or perhaps because of ? its wide reach, often does not
appear in our cinema. As ideals that viewers are meant to look up to rather than identify with,
Hindi film protagonisits usually read books of apsirational value: textbooks, English books,
or high value literature?.
Which one of the following CANNOT be inferred from the paragraph above?
A. Textbooks, English books or high literature have apsirational value, but not popular Hindi
fiction
B. People do not look up to writers of textbooks, English book or high value literature
C. Though popular hindi fiction was wide readh, it often does not appear in the movies
D. Protagonists in Hindi movies, being ideals for viewers, read only books of aspirational
value.
Answer : B
Solution :
People do not look up to writers of textbooks, English book or high value literature.
8
Civil Engineering
11.What is curl of the vector field 2x
2
yi + 5z
2
j - 4yzk?
A. - 14zi - 2x
2
k
B. 6zi + 4xj - 2x
2
k
C. 6zi + 8xyj + 2x
2
yk
D. -14zi + 6yj + 2x
2
k
Answer : A
Solution :
12.Analysis of a water sample revealed that the sample contains the following species.
9
Concentrations of which of the species will be required to compute alkalinity?
A.
B.
C.
D.
Answer : A
Solution :
H2CO3 and HCO3
-
never come together
13.The value of the function f(x) is given at n distinct values of x and its value is to be
interpolated at the point x
*
using all the n points. The estimate is obtained first by the
Lagrange polynomial, denoted by IL, and then by the Newton polynomial, denoted by IN.
Which one of the following statements is correct?
A. IL is always greater than IN
B. No definite relation exists between IL and IN.
C. IL is always less than IN
D. IL and IN are always equal
Answer : B
Solution :
Lagrange?s form is more efficient when you have to interpolate several data sets on the same
data point.
Newton?s form is more efficient when you have to interpolate data incrementally. So no
relationship between both.
14.If the fineness modulus of a sample of the fine aggregates is 4.3, the mean size of the
particles in the sample is between
10
A. 150 ?m and 300 ?m
B. 2.36 mm and 4.75 mm
C. 300 ?m and 600 ?m
D. 1.18 mm and 2.36 mm
Answer : D
Solution :
150 ?m, 300 ?m, 600 ?m, 1.18 mm,
2.36 mm, 4.75 mm, 10 mm, 20 mm,
40 mm, 80 mm
150 ? 1
300 ? 2
600 ? 3
4.75 - 6
15.The command area of a canal grows only one crop, i.e., wheat. The base period of wheat
is 120 days and its total water requirement, ?, is 40 cm. If the canal discharge is 2 m
3
/s, the
area, in hectares, rounded off to the nearest integer, which could be irrigated (neglecting all
losses) is ______________
Answer :
Solution :
B = 120 days
? = 0.4 m
and ? = 8.64B/D
? D = 2592 ha per (m
3
/s)
? For 2m
3
/sec water, area will be 5184 ha
11
16.The characteristic compressive strength of concrete required in a project is 25 MPa and
standard deviation in the observed compressive strength expected at site is 4 MPa. The
average compressive strength of cubes tested at different water-cement (w/c) ratios using the
same material as is used for the project is given in the table.
The water-cement ratio (in percent, round off to the lower integer) to be used in the mix
is________
Answer :
Solution :
fck = 25 ; ? = 4 MPa
fm = fck + 1.65? = 31.6 MPa
Using interpolation
= 46.7 (Rounded off to the lowest integer).
17.A solid sphere of radius, r, and made of material with density ?s, is moving through the
atmosphere (constant pressure, p) with a velocity, ?. The net force ONLY due to atmospheric
pressure (Fp) acting on the sphere at any time, t, is
A.
B. Zero
C. ?r
2
p
D. 4?r
2
p
Answer : B
Solution :
Force = area ? P
12
Net force will be zero as pressure acts from all sides.
18.An earthen dam of height H is made of cohesive soil whose cohesion and unit weight are c
and ?, respectively. If the factor of safety against cohesion is Fc, the Taylor?s stability
A.
B.
C.
D.
Answer : C
Solution :
Taylor?s stability number,
19.A closed thin walled tube has thickness, t, mean enclosed area within the boundary of the
centrline of tube?s thickness, Am, and shear stress ?. Torsional moment of resistance, T of the
section would be
A.
B.
13
C.
D.
Answer : A
Solution :
20.For a channel section subjected to a downward vertical shear force at its centroid, which
one of the following represents the correct distribution of shear stress in flange and web?
A.
B.
C.
14
D.
Answer : C
Solution :
Standard result
21.The degree of static indeterminancy of the plane frame is shown in the figure is ________
Answer :
Solution :
Ds = 3C ? R'
C = 6
Ds = (3 ? 6 ? 2) ? 1 (due to hinge)
= 15
15
22.Structural failures considered in the mechanistic method of bituminous pavement design
are
A. Shear and slippage
B. Fatique and Rutting
C. Fatique and shear
D. Rutting and shear
Answer : B
Solution :
As per IRC66:2012
23.Which one of the options contains ONLY primary air pollutants?
A. Ozone and peroxyacetyl nitrate
B. Nitrogen oxides and peroxyacetyl nitrate
C. Hydrocarbons and nitrogen oxides
D. Hydrocarbons and ozone
Answer : C
Solution :
Ozone and PAN are secondary air pollutants.
24.The following inequality is true for all x close to 0.
What is the value of
A. 2
B. 1/2
C. 0
16
D. 1
Answer : A
Solution :
It is form
L?s hospital rule (differentiate)
Putting 0 everywhere ? still form.
Differentiating numerator and denominator again,
25.The velocity field in a flow system is given by v = 2i + (x + y)j + (xyz)k. The acceleration
of the fluid at (1, 1, 2) is
A. j + k
B. 2i + 10 k
C. 4j + 10k
D. 4i + 12 k
Answer : C
Solution :
17
and
= 2 + (x + y) + (xyz)(0) + 0
and
= 2(yz) + (x + y)(xz) + (xyz)(xy) + 0
az = 2(1 ? 2) + (1 + 1)(1 ? 2) + (1 ? 1
? 2) (1?1)
= 10k
Therefore,
26.A steel column is restrained against both translation and rotation at one end and is
restrained only against rotation but free to translate at the other end. Theoretical and design
(IS: 800 ? 2007) values, respectively, of effective length factor of the column are
18
A. 1.0 and 1.0
B. 1.2 and 1.0
C. 1.2 and 1.2
D. 1.0 and 1.2
Answer : D
Solution :
As per IS:800-2007
27.Euclindean norm (length) of the vector [4 ?2 ? 6]
T
is
A. ?48
B. ?24
C. ?12
D. ?56
Answer : D
Solution :
The Euclidean norm assigns to each vector the length of its arrow. Because of this,
the Euclidean norm is often known as the magnitude. So,
Length
28.An inflow hydrograph is routed through a reservoir to produce an outflow hydrograph.
The peak flow of the inflow hydrograph is PI and the time of occurrence of the peak is tI. The
peak flow of the outflow hydrograph is P0 and the time of occurance of the peak is t0. Which
one of the following statements is correct?
A. PI < P0 and tI > t0
B. PI > P0 and tI > t0
C. PI < P0 and tI < t0
D. PI > P0 and tI < t0
Answer : D
Solution :
19
Pl > Po ; tl < to
29.Construction of a new building founded on a clayey soil was completed in January In
January 2014, the average consolidation settlement of the foundation in clay was recorded as
10 mm. The ultimate consolidation settlement was estimated in design as 40 mm.
Considering double drainage to occur at the clayey soil site, the expected consolidation
settlement in January 2019 (in mm, round off to the nearest integer) will be _____________
Answer :
Solution :
Ultimate consolidation = 40 mm
Recorded consolidation = 10 mm
? Total recorded consolidation
? 40 ? 0.375
20
30.The notation ?SC? as per Indian standard Soil Classification System refers to
A. Clayey silt
B. Sandy clay
C. Calyey sand
D. Silty clay
Answer : C
Solution :
SC : clayey sand
31.The speed-density relationship in a mid-block section of a highway follows the
Greenshield?s model. If the free flow speed is vf and the jam density is kj, the maximum flow
observed on this ection is
A.
B.
C. fvkj
D.
Answer : D
Solution :
?(1)
21
32.An anisotropic soil deposit has coefficient of permeability in vertical and horizontal
directions as kz and kx, respectively. For constructing a flow net, the horizontal dimension of
the problem?s geometry is transformed by a multiplying factor of
A.
B.
C.
D.
Answer : C
Solution :
Flow net for anisotropic soil.
?(i)
If we transformed geometry in x direction let x cordinate be transformed to the new
coordinate xt by the transformation.
22
?(ii)
From eq. (i) & (ii),
Hence prove
So, multiplied factor
33.The Laplace transform of sinh (at) is
A.
B.
C.
D.
Answer : C
Solution :
Laplace transform of sinh (at) =
23
34.The data from a closed traverse survey PQRS (run in the clockwise direction) are given in
the table
The closing error for the traverse PQRS (in degrees) is________
Answer :
Solution :
n = 4 (number of sides of closed traverse)
(2n ? 4) ? 90? = 360?
so, error in included angle
= (88 + 92 + 94 + 89) ? 360 = +3?
35.A vehicle is moving on a road of grade +4% at a speed of 20 m/s. Consider the coefficient
of rolling friction as 0.46 and acceleration due to gravity as 10 m/s
2
. On applying brakes to
reach a speed of 10 m/s, the required braking distance (in m, round off to nearest integer)
along the horizontal, is ______.
Answer :
Solution :
Given: grade = +4%
V1 = 20 m/sec.
f = 0.46
g = 10 m/sec.
V1 = 10 m/sec.
24
We know,
36.A broad gauge railway line passes through a horizontal curved section (radius = 875 m) of
length 200 m. The allowable speed on this portion is 100 km/h. For calculating the cant,
consider the gauge as centre-to-centre distance between the rail heads, equal to 1750mm, The
maximum permissible cant (in mm, round off to 1 decimal place) with respect to the centreto-
centre distance between the rail heads is ______.
Answer :
Solution :
Given data:
R = 875 mm
Allowable speed = 100 kmph
Gauge length G = 1750 mm
Allowable cant
37.When a specimen of M25 concrete is loaded to a stress level of 12.5 MPa, a strain of 500
? 10
?6
is recorded. If this load is allowed to stand for a long time, the strain increases to 1000
? 10
?6
. In accordance with provisions of IS: 456-2000, considering the long-term effects, the
effective modulus of elasticity of the concrete (in MPa) is ________
Answer :
Solution :
25
Short term strain = 500 ? 10
?6
Long term strain = 1000 ? 10
?6
So, creep coefficient,
? = 1
Long-term effective modulus
= 12500 N/mm
2
= 12500 MPa
or
38.The probability density function of a continuous random variable distributed uniformly
between x and y (for y > x) is
A.
B. x ? y
C. y ? x
D.
Answer : D
Solution :
Probability density function of a uniformly distributed random variable.
26
39.The uniform arrival and uniform service rates observed on an approach road to a
signalized intersection are 20 and 50 vehicles/minutes, respectively. For this signal, the red
time is 30 s, the effective green time is 30 s, and the cycle length is 60s. Assuming that
initially there are no vehicles in the queue, the average delay per vehicle using the approach
road during a cycle length (in s, round off to 2 decimal places) is _______
Answer :
Solution :
Average delay per vehicle
= 12.5 sec
40.A rolled I-section beam is supported on a 75 mm wide bearing plate as shown in the
figure. Thickness of flange and web of the I-section are 20 mm and 8mm, respectively. Root
27
radius of the I-section is 10mm. Assuming: material yield stress,
fy = 250 MPa and partial safety factor for material, ?mo = 1.10
As per IS: 800-2007, the web bearing strength (in kN, round off to 2 decimal places) of the
beam is _______
Answer :
Solution :
Effective area in bearing = [75 + 2.5 (flange thickness + root radius)] ? 8
= [75 + 2.5 (20 + 10)] ? 8
= 1200 mm
2
so, web bearing strength
= 272.73 kN
41.The critical bending compressive stress in the extreme fibre of a structural steel section is
1000 MPa. It is given that the yield strength of the steel is 250 MPa, width of flange is 250
mm and thickness of flange is 15 mm. As per the provisions of IS: 800-2007, the
nondimensional slendeness ratio of the steel crosssection is
28
A. 0.50
B. 2.00
C. 0.25
D. 0.75
Answer : A
Solution :
Non-dimensional slenderness ratio
42.At the foot of a spillyway, water flows at a depth of 23 cm with a velocity of 8.1 m/s, as
shown in the figure.
The flow enters as an M-3 profile in the long wide rectangular channel with bed
slope and Manning?s n = 0.A hydraulic jump is formed at a certain distance from
the foot of the spillway. Assume the acceleration due to gravity, g = 9.81 m/s
2
. Just before the
hydraulic jump, the depth of flow y1 (in m, round off to 2 decimal places) is _________
Answer :
Solution :
Given data:
y = 0.23 m
V = 8.1 m/sec.
Slope,
29
h = 0.015
g = 9.81 m/sec
2
q = yV = 8.1 ? 0.23
= 1.863 m
3
/sec/m
It is given that flow enters as an M-3 profile in the long wide rectangular channel with bed
slope
From manning equation at M3 profile section.
[for wide channel R = y]
The flow profile will follow normal depth (yn) after jump.
For wide rectangular channel,
Here, yn = y 2 = 1.11 m
30
Again,
? y 1 = 0.417 m < y c [supercritical]
43.Consider the reactor shown in the figure. The concentration (in mg/l) of a compound in
the influent and effluent are C0 and C, flow rate through the reactor is Q m
3
/h respectively.
The compound is degraded in the reactor following the first order reactions. The mixing
condition of the reactor Complete Mix Flow Reactor (CMFR) or a plug-flow reactor (PFR).
The length of the reactor can be adjusted in these two mixing conditions to LCMFR and
LPER while keeping the cross-section of the reactor constant. Assuming steady state and for
C/C0 = 0.8, the value of LCMFR/LPER (round off to 2 decimal places) is _______
Answer :
Solution :
A = constant
Q = AL
For plug flow
[ detention time for plug flow reaction]
For completely mix = C =
[ detention time for completely mix reaction]
31
Also,
44.A series of perpendicular offsets taken from a curved boundary wall to a straight survey
line at an interval of 6 m are 1.22, 1.67, 2.04, 2.34, 2.14, 1.87, and 1.15 m. The area (in m2,
round off to 2 decimal places) boundary by the survey line, curved boundary wall, the first
and the last offsets, determined using Simpson?s rule, is _______.
Answer :
Solution :
Area by simpson?s rule
45.A water treatment plant treats 6000 m
3
of water per day. As a part of the treatment
process, discrete particles are required to be settled in a clarifier. A column test indicates that
an overflow rate of 1.5 m per hour would produce the desired removal of particles through
32
settling in the clarifier having a depth of 3.0 m. The volume of the required clarifier, (in m
3
,
round off to 1 decimal place) would be
Answer :
Solution :
Given data:
Flow rate = 6000 m
3
/day
Over flow rate = 1.5 m/hour
= 1.5 ? 24 m/day = 36 m/day
Flow area
= 166.67 m
2
Volume required for clarifier = Flow area ? depth
= 166.67 ? 3 = 500 m
3
46.A flexible pavement has the following class of loads during a particular hour of the day.
i. 80 buses with 2-axles (each axle load of 40 kN);
ii. 160 trucks with 2-axles (front and rear axle loads of 40 kN and 80 kN, respectively)
The equivalent standard axle load repetitions for this vehicle combination as per IRC:37-2012
would be
A. 320
B. 250
C. 240
D. 180
Answer : D
Solution :
33
= 5 + 5 + 10 + 160
= 180
47.Constant head permeability tests were performed on two soil specimens, S1 and SThe
ratio of height of the two specimens (LS1: LS2) is 1.5, the ratio of the diameter of specimens
(DS1:DS2) is 0.5, and the ratio of the constant head (hs1:hs2) applied on the specimens is 2.0. If
the discharge from both the specimens is equal, the ratio of the permeability of the soil
specimens (ks1:ks2) is ________
Answer :
Solution :
For constant head permeability test,
Q ? discharge
L ? length of specimen
a ? area of cross-section of specimen
h ? constant head
Given,
34
48.A long uniformly distributed load of 10 kN/m and a concentrated load of 60 kN are
moving together on the beam ABCD shown in the figure (not drawn to scale). The relative
positions of the two loads are not fixed. The maximum shear force (in kN, round off to the
nearest integer) caused at the internal hinge B due to the two loads is __________
Answer :
Solution :
35
Maximum
49.A square footing of 2m sides rests on the surface of a homogeneous soil bed having the
properties: cohesion c = 24 kPa, angle of internal friction ? = 25?, and unit weight ? = 18
kN/m
3
. Terzaghi?s bearing capacity factor ? = 25? are Nc = 25.1, Nq = 12.7, N? = 9.7, N?c =
14.8, N?q = 5.6, and N?? = 3.The ultimate bearing capacity of the foundation (in kPa, round
off to 2 decimal places) is ______.
Answer :
Solution :
Here, ? < 29
o
Footing rests on the ground
Hence, q = 0
so,
use, accordingly.
50.The dimensions of a soil sampler are given in the table.
36
For this sampler, the outside clearance ratio (in percent, round off to 2 decimal places) is
_________.
Answer :
Solution :
Given:
D4 = 90 mm
D2 = 100 mm
51.A plane frame shown in the figure (not to scale) has linear elastic springs at node H. The
spring constants are kx = ky = 5 ? 10
5
kN/m
3
and k? = 3 ? 10
5
kNm/rad.
For the externally applied moment of 30 kNm at node F, the rotation (in degrees, round off to
3 decimals) observed in the rotational spring at node H is ________
Answer :
37
Solution :
R ? 3 = 30
? R = 10 kN
From right side of FBD
R ? 3 = K? . ?
= 10
?4
rad = 0.0057
= 0.006 degree
52.Chlorine is used as the disinfectant in a municipal water treatment plant. It achieves 50
percent of disinfection efficiency measured in terms of killing the indicator microorganisms
(E-Coli) in 3 minutes. The minimum time required to achieve 99 percent disinfection
efficiency would be
A. 9.93 minutes
B. 11.93 minutes
C. 21.93 minutes
D. 19.93 minutes
Answer : D
Solution :
Disinfection eff.
38
Again,
? t = 19.93 min.
53.A confined aquifer of 15 m constant thickness is sandwiched between two aquicludes as
shown in the figure (not drawn to scale)
The heads indicated by two piezometers P and Q are 55.2 m and 34.1 m, respectively. The
aquifer has a hydraulic conductivity of 80 m/ day and its effective porosity is 0.If the distance
between the piezometers is 2500 m, the time taken by the water to travel through the aquifer
from piezometer location P to Q (in days, round off to 1 decimal place) is ______.
Answer :
Solution :
Given,
39
= 9.259 ? 10
?4
m/s
h = 55.2 ? 34.1 = 21.1 m
L = 2500 m
n = 0.25
B = 15 m
As per Darcy?s law,
V = ki
Seepage velocity
54.For a plane stress problem, the state of stress at a point P is represented by the stress
element as shown in the figure.
40
By how much angle (?) in degrees the stress element should be rotated in order to get the
planes of maximum shear stress?
A. 26.6
B. 48.3
C. 31.7
D. 13.3
Answer : C
Solution :
FirstRanker.com - FirstRanker's Choice
2
GATE CE 2019 Set 2: Questions & Solutions
General Aptitude
1.Daytime temperature in Delhi can ______ 40?C
A. Peak
B. reach
C. get
D. stand
Answer : B
Solution :
Daytime temperature in Delhi can reach 40?C
2.The growth rate of ABC Motors in 2017 was the same ________ XYZ Motors in 2016 .
A. As those of
B. As that off
C. As that of
D. As off
Answer : C
Solution :
The growth rate of ABC Motors in 2017 was the same as that of XYZ Motors in 2016.
3.Suresh wanted to lay a new carpet in his new mansion with an area of 70 55 sq. mts.
However an area of 550 sq. mts had to be left out for flower pots. If the cost of carpet is Rs.
50 per sq. mts, how much money (in Rs.) will be spent by Suresh for the carpet now?
A. Rs. 1,65,000
B. Rs. 1,92,500
C. Rs. 1,27,500
D. Rs. 2,75,000
Answer : A
3
Solution :
Area of mansion = 70 ? 55 = 3850 m
2
Area for flower pots = 550 m
2
? Area left for carpet = 3850 ? 550 = 3300m
2
? Cost = 3300 ? 50 = 165000
4.A retaining wall with measurements 30 m ? 12 m ? 6 m was constructed with bricks of
dimensions 8 cm ? 6 cm. If 60% of the wall consists of bricks used for the construction is
___________ lakhs.
A. 45
B. 30
C. 40
D. 75
Answer : A
Solution :
Volume of wall = 30 ? 12 ? 6 = 2160 m
3
= 2160 ? 106 cm
3
Total volume of bricks required = 2160 ? 106 ? 0.6 cm
3
= 1296 ? 106 cm
3
Volume of one brick = 8 ? 6 ? 6 = 288 cm
3
? No. of bricks required
= 4.5 ? 10
6
= 45 lakhs
5.Hima Das was _______ only Indian athlete to win _____________ gold for India.
A. the, many
B. an, the
C. an, a
4
D. the, a
Answer : D
Solution :
Hima Das was the only Indian athlete to win a gold for India.
6.Population of state X increased by x% and the population of state Y increased by y% from
2001 to 2011. Assume that x is greater than y. Let P be the ratio of the population of state X
to state Y in a given year. The percentage increase in P from 2001 to 2011 is_____________
A. x ? y
B.
C.
D.
Answer : C
Solution :
Let population of X is ?A? in 2001
and Population of Y is ?B? in 2001
? Population of A in 2011
& Population of B in 2011
Given,
5
% increase in P
7.The Newspaper report that over 500 hectares of tribal land spread across 28 tribal
settlements in Mohinitampuram forest division have already been ?alienated?. A top forest
official said, ?First the tribals are duped out of their land holdings. Second, the families thus
rendered landless are often forced to encroach further into the forests?.
On the basis of the information available in the paragraph, _______ is/are responsible for
duping the tribals.
A. The newspaper
B. Landless families
C. forest officials
D. it cannot be inferred who
Answer : D
Solution :
?it cannot be inferred who?
From given information, nobody can be held responsible.
8.An oil tank can be filled by pipe X in 5 hours and pipe Y in 4 hours, each pump working on
its own. When the oil tank is full and the drainage hole is open, the oil is drained in 20 hours.
6
If initially the tank was empty and someone started the two pumps together but left the
drainage hole open, how many hours will it tak for the tank to be filled? (Assume that the rate
of drainage is independent of the head)
A. 2.50
B. 1.50
C. 2.00
D. 4.00
Answer : A
Solution :
Pipe X will fill how much in one hour tank
Pipe Y will fill how much in one hour tank
Drainage will drain out how much water in 1 hour tank
? Total tank filled in one hour
tank gets filled in = 1 hour
? Full (i) tank gets filled in
9.Mohan, the manager, wants his four workers to work in pairs. No paper should work for
more than 5 hours. Ram and Johan have worked together for 5 hours. Krishna and Amir have
7
worked as a team for 2 hours. Krishan does not want to work with Ram whom should mohan
allot to work with Johan, if we wants all the workers to continue working?
A. Amir
B. Krishna
C. Ram
D. None of the three
Answer : B
Solution :
Conditions given:
(i) Ram & John have worked for 5 hours.
(ii) Krishna doesn?t want to work with Ram.
(iii) No pair should work beyond 5 hours.
Hence, Krishna should work with John to satisfy the above conditions.
10.?Popular Hindi fiction, despite ? or perhaps because of ? its wide reach, often does not
appear in our cinema. As ideals that viewers are meant to look up to rather than identify with,
Hindi film protagonisits usually read books of apsirational value: textbooks, English books,
or high value literature?.
Which one of the following CANNOT be inferred from the paragraph above?
A. Textbooks, English books or high literature have apsirational value, but not popular Hindi
fiction
B. People do not look up to writers of textbooks, English book or high value literature
C. Though popular hindi fiction was wide readh, it often does not appear in the movies
D. Protagonists in Hindi movies, being ideals for viewers, read only books of aspirational
value.
Answer : B
Solution :
People do not look up to writers of textbooks, English book or high value literature.
8
Civil Engineering
11.What is curl of the vector field 2x
2
yi + 5z
2
j - 4yzk?
A. - 14zi - 2x
2
k
B. 6zi + 4xj - 2x
2
k
C. 6zi + 8xyj + 2x
2
yk
D. -14zi + 6yj + 2x
2
k
Answer : A
Solution :
12.Analysis of a water sample revealed that the sample contains the following species.
9
Concentrations of which of the species will be required to compute alkalinity?
A.
B.
C.
D.
Answer : A
Solution :
H2CO3 and HCO3
-
never come together
13.The value of the function f(x) is given at n distinct values of x and its value is to be
interpolated at the point x
*
using all the n points. The estimate is obtained first by the
Lagrange polynomial, denoted by IL, and then by the Newton polynomial, denoted by IN.
Which one of the following statements is correct?
A. IL is always greater than IN
B. No definite relation exists between IL and IN.
C. IL is always less than IN
D. IL and IN are always equal
Answer : B
Solution :
Lagrange?s form is more efficient when you have to interpolate several data sets on the same
data point.
Newton?s form is more efficient when you have to interpolate data incrementally. So no
relationship between both.
14.If the fineness modulus of a sample of the fine aggregates is 4.3, the mean size of the
particles in the sample is between
10
A. 150 ?m and 300 ?m
B. 2.36 mm and 4.75 mm
C. 300 ?m and 600 ?m
D. 1.18 mm and 2.36 mm
Answer : D
Solution :
150 ?m, 300 ?m, 600 ?m, 1.18 mm,
2.36 mm, 4.75 mm, 10 mm, 20 mm,
40 mm, 80 mm
150 ? 1
300 ? 2
600 ? 3
4.75 - 6
15.The command area of a canal grows only one crop, i.e., wheat. The base period of wheat
is 120 days and its total water requirement, ?, is 40 cm. If the canal discharge is 2 m
3
/s, the
area, in hectares, rounded off to the nearest integer, which could be irrigated (neglecting all
losses) is ______________
Answer :
Solution :
B = 120 days
? = 0.4 m
and ? = 8.64B/D
? D = 2592 ha per (m
3
/s)
? For 2m
3
/sec water, area will be 5184 ha
11
16.The characteristic compressive strength of concrete required in a project is 25 MPa and
standard deviation in the observed compressive strength expected at site is 4 MPa. The
average compressive strength of cubes tested at different water-cement (w/c) ratios using the
same material as is used for the project is given in the table.
The water-cement ratio (in percent, round off to the lower integer) to be used in the mix
is________
Answer :
Solution :
fck = 25 ; ? = 4 MPa
fm = fck + 1.65? = 31.6 MPa
Using interpolation
= 46.7 (Rounded off to the lowest integer).
17.A solid sphere of radius, r, and made of material with density ?s, is moving through the
atmosphere (constant pressure, p) with a velocity, ?. The net force ONLY due to atmospheric
pressure (Fp) acting on the sphere at any time, t, is
A.
B. Zero
C. ?r
2
p
D. 4?r
2
p
Answer : B
Solution :
Force = area ? P
12
Net force will be zero as pressure acts from all sides.
18.An earthen dam of height H is made of cohesive soil whose cohesion and unit weight are c
and ?, respectively. If the factor of safety against cohesion is Fc, the Taylor?s stability
A.
B.
C.
D.
Answer : C
Solution :
Taylor?s stability number,
19.A closed thin walled tube has thickness, t, mean enclosed area within the boundary of the
centrline of tube?s thickness, Am, and shear stress ?. Torsional moment of resistance, T of the
section would be
A.
B.
13
C.
D.
Answer : A
Solution :
20.For a channel section subjected to a downward vertical shear force at its centroid, which
one of the following represents the correct distribution of shear stress in flange and web?
A.
B.
C.
14
D.
Answer : C
Solution :
Standard result
21.The degree of static indeterminancy of the plane frame is shown in the figure is ________
Answer :
Solution :
Ds = 3C ? R'
C = 6
Ds = (3 ? 6 ? 2) ? 1 (due to hinge)
= 15
15
22.Structural failures considered in the mechanistic method of bituminous pavement design
are
A. Shear and slippage
B. Fatique and Rutting
C. Fatique and shear
D. Rutting and shear
Answer : B
Solution :
As per IRC66:2012
23.Which one of the options contains ONLY primary air pollutants?
A. Ozone and peroxyacetyl nitrate
B. Nitrogen oxides and peroxyacetyl nitrate
C. Hydrocarbons and nitrogen oxides
D. Hydrocarbons and ozone
Answer : C
Solution :
Ozone and PAN are secondary air pollutants.
24.The following inequality is true for all x close to 0.
What is the value of
A. 2
B. 1/2
C. 0
16
D. 1
Answer : A
Solution :
It is form
L?s hospital rule (differentiate)
Putting 0 everywhere ? still form.
Differentiating numerator and denominator again,
25.The velocity field in a flow system is given by v = 2i + (x + y)j + (xyz)k. The acceleration
of the fluid at (1, 1, 2) is
A. j + k
B. 2i + 10 k
C. 4j + 10k
D. 4i + 12 k
Answer : C
Solution :
17
and
= 2 + (x + y) + (xyz)(0) + 0
and
= 2(yz) + (x + y)(xz) + (xyz)(xy) + 0
az = 2(1 ? 2) + (1 + 1)(1 ? 2) + (1 ? 1
? 2) (1?1)
= 10k
Therefore,
26.A steel column is restrained against both translation and rotation at one end and is
restrained only against rotation but free to translate at the other end. Theoretical and design
(IS: 800 ? 2007) values, respectively, of effective length factor of the column are
18
A. 1.0 and 1.0
B. 1.2 and 1.0
C. 1.2 and 1.2
D. 1.0 and 1.2
Answer : D
Solution :
As per IS:800-2007
27.Euclindean norm (length) of the vector [4 ?2 ? 6]
T
is
A. ?48
B. ?24
C. ?12
D. ?56
Answer : D
Solution :
The Euclidean norm assigns to each vector the length of its arrow. Because of this,
the Euclidean norm is often known as the magnitude. So,
Length
28.An inflow hydrograph is routed through a reservoir to produce an outflow hydrograph.
The peak flow of the inflow hydrograph is PI and the time of occurrence of the peak is tI. The
peak flow of the outflow hydrograph is P0 and the time of occurance of the peak is t0. Which
one of the following statements is correct?
A. PI < P0 and tI > t0
B. PI > P0 and tI > t0
C. PI < P0 and tI < t0
D. PI > P0 and tI < t0
Answer : D
Solution :
19
Pl > Po ; tl < to
29.Construction of a new building founded on a clayey soil was completed in January In
January 2014, the average consolidation settlement of the foundation in clay was recorded as
10 mm. The ultimate consolidation settlement was estimated in design as 40 mm.
Considering double drainage to occur at the clayey soil site, the expected consolidation
settlement in January 2019 (in mm, round off to the nearest integer) will be _____________
Answer :
Solution :
Ultimate consolidation = 40 mm
Recorded consolidation = 10 mm
? Total recorded consolidation
? 40 ? 0.375
20
30.The notation ?SC? as per Indian standard Soil Classification System refers to
A. Clayey silt
B. Sandy clay
C. Calyey sand
D. Silty clay
Answer : C
Solution :
SC : clayey sand
31.The speed-density relationship in a mid-block section of a highway follows the
Greenshield?s model. If the free flow speed is vf and the jam density is kj, the maximum flow
observed on this ection is
A.
B.
C. fvkj
D.
Answer : D
Solution :
?(1)
21
32.An anisotropic soil deposit has coefficient of permeability in vertical and horizontal
directions as kz and kx, respectively. For constructing a flow net, the horizontal dimension of
the problem?s geometry is transformed by a multiplying factor of
A.
B.
C.
D.
Answer : C
Solution :
Flow net for anisotropic soil.
?(i)
If we transformed geometry in x direction let x cordinate be transformed to the new
coordinate xt by the transformation.
22
?(ii)
From eq. (i) & (ii),
Hence prove
So, multiplied factor
33.The Laplace transform of sinh (at) is
A.
B.
C.
D.
Answer : C
Solution :
Laplace transform of sinh (at) =
23
34.The data from a closed traverse survey PQRS (run in the clockwise direction) are given in
the table
The closing error for the traverse PQRS (in degrees) is________
Answer :
Solution :
n = 4 (number of sides of closed traverse)
(2n ? 4) ? 90? = 360?
so, error in included angle
= (88 + 92 + 94 + 89) ? 360 = +3?
35.A vehicle is moving on a road of grade +4% at a speed of 20 m/s. Consider the coefficient
of rolling friction as 0.46 and acceleration due to gravity as 10 m/s
2
. On applying brakes to
reach a speed of 10 m/s, the required braking distance (in m, round off to nearest integer)
along the horizontal, is ______.
Answer :
Solution :
Given: grade = +4%
V1 = 20 m/sec.
f = 0.46
g = 10 m/sec.
V1 = 10 m/sec.
24
We know,
36.A broad gauge railway line passes through a horizontal curved section (radius = 875 m) of
length 200 m. The allowable speed on this portion is 100 km/h. For calculating the cant,
consider the gauge as centre-to-centre distance between the rail heads, equal to 1750mm, The
maximum permissible cant (in mm, round off to 1 decimal place) with respect to the centreto-
centre distance between the rail heads is ______.
Answer :
Solution :
Given data:
R = 875 mm
Allowable speed = 100 kmph
Gauge length G = 1750 mm
Allowable cant
37.When a specimen of M25 concrete is loaded to a stress level of 12.5 MPa, a strain of 500
? 10
?6
is recorded. If this load is allowed to stand for a long time, the strain increases to 1000
? 10
?6
. In accordance with provisions of IS: 456-2000, considering the long-term effects, the
effective modulus of elasticity of the concrete (in MPa) is ________
Answer :
Solution :
25
Short term strain = 500 ? 10
?6
Long term strain = 1000 ? 10
?6
So, creep coefficient,
? = 1
Long-term effective modulus
= 12500 N/mm
2
= 12500 MPa
or
38.The probability density function of a continuous random variable distributed uniformly
between x and y (for y > x) is
A.
B. x ? y
C. y ? x
D.
Answer : D
Solution :
Probability density function of a uniformly distributed random variable.
26
39.The uniform arrival and uniform service rates observed on an approach road to a
signalized intersection are 20 and 50 vehicles/minutes, respectively. For this signal, the red
time is 30 s, the effective green time is 30 s, and the cycle length is 60s. Assuming that
initially there are no vehicles in the queue, the average delay per vehicle using the approach
road during a cycle length (in s, round off to 2 decimal places) is _______
Answer :
Solution :
Average delay per vehicle
= 12.5 sec
40.A rolled I-section beam is supported on a 75 mm wide bearing plate as shown in the
figure. Thickness of flange and web of the I-section are 20 mm and 8mm, respectively. Root
27
radius of the I-section is 10mm. Assuming: material yield stress,
fy = 250 MPa and partial safety factor for material, ?mo = 1.10
As per IS: 800-2007, the web bearing strength (in kN, round off to 2 decimal places) of the
beam is _______
Answer :
Solution :
Effective area in bearing = [75 + 2.5 (flange thickness + root radius)] ? 8
= [75 + 2.5 (20 + 10)] ? 8
= 1200 mm
2
so, web bearing strength
= 272.73 kN
41.The critical bending compressive stress in the extreme fibre of a structural steel section is
1000 MPa. It is given that the yield strength of the steel is 250 MPa, width of flange is 250
mm and thickness of flange is 15 mm. As per the provisions of IS: 800-2007, the
nondimensional slendeness ratio of the steel crosssection is
28
A. 0.50
B. 2.00
C. 0.25
D. 0.75
Answer : A
Solution :
Non-dimensional slenderness ratio
42.At the foot of a spillyway, water flows at a depth of 23 cm with a velocity of 8.1 m/s, as
shown in the figure.
The flow enters as an M-3 profile in the long wide rectangular channel with bed
slope and Manning?s n = 0.A hydraulic jump is formed at a certain distance from
the foot of the spillway. Assume the acceleration due to gravity, g = 9.81 m/s
2
. Just before the
hydraulic jump, the depth of flow y1 (in m, round off to 2 decimal places) is _________
Answer :
Solution :
Given data:
y = 0.23 m
V = 8.1 m/sec.
Slope,
29
h = 0.015
g = 9.81 m/sec
2
q = yV = 8.1 ? 0.23
= 1.863 m
3
/sec/m
It is given that flow enters as an M-3 profile in the long wide rectangular channel with bed
slope
From manning equation at M3 profile section.
[for wide channel R = y]
The flow profile will follow normal depth (yn) after jump.
For wide rectangular channel,
Here, yn = y 2 = 1.11 m
30
Again,
? y 1 = 0.417 m < y c [supercritical]
43.Consider the reactor shown in the figure. The concentration (in mg/l) of a compound in
the influent and effluent are C0 and C, flow rate through the reactor is Q m
3
/h respectively.
The compound is degraded in the reactor following the first order reactions. The mixing
condition of the reactor Complete Mix Flow Reactor (CMFR) or a plug-flow reactor (PFR).
The length of the reactor can be adjusted in these two mixing conditions to LCMFR and
LPER while keeping the cross-section of the reactor constant. Assuming steady state and for
C/C0 = 0.8, the value of LCMFR/LPER (round off to 2 decimal places) is _______
Answer :
Solution :
A = constant
Q = AL
For plug flow
[ detention time for plug flow reaction]
For completely mix = C =
[ detention time for completely mix reaction]
31
Also,
44.A series of perpendicular offsets taken from a curved boundary wall to a straight survey
line at an interval of 6 m are 1.22, 1.67, 2.04, 2.34, 2.14, 1.87, and 1.15 m. The area (in m2,
round off to 2 decimal places) boundary by the survey line, curved boundary wall, the first
and the last offsets, determined using Simpson?s rule, is _______.
Answer :
Solution :
Area by simpson?s rule
45.A water treatment plant treats 6000 m
3
of water per day. As a part of the treatment
process, discrete particles are required to be settled in a clarifier. A column test indicates that
an overflow rate of 1.5 m per hour would produce the desired removal of particles through
32
settling in the clarifier having a depth of 3.0 m. The volume of the required clarifier, (in m
3
,
round off to 1 decimal place) would be
Answer :
Solution :
Given data:
Flow rate = 6000 m
3
/day
Over flow rate = 1.5 m/hour
= 1.5 ? 24 m/day = 36 m/day
Flow area
= 166.67 m
2
Volume required for clarifier = Flow area ? depth
= 166.67 ? 3 = 500 m
3
46.A flexible pavement has the following class of loads during a particular hour of the day.
i. 80 buses with 2-axles (each axle load of 40 kN);
ii. 160 trucks with 2-axles (front and rear axle loads of 40 kN and 80 kN, respectively)
The equivalent standard axle load repetitions for this vehicle combination as per IRC:37-2012
would be
A. 320
B. 250
C. 240
D. 180
Answer : D
Solution :
33
= 5 + 5 + 10 + 160
= 180
47.Constant head permeability tests were performed on two soil specimens, S1 and SThe
ratio of height of the two specimens (LS1: LS2) is 1.5, the ratio of the diameter of specimens
(DS1:DS2) is 0.5, and the ratio of the constant head (hs1:hs2) applied on the specimens is 2.0. If
the discharge from both the specimens is equal, the ratio of the permeability of the soil
specimens (ks1:ks2) is ________
Answer :
Solution :
For constant head permeability test,
Q ? discharge
L ? length of specimen
a ? area of cross-section of specimen
h ? constant head
Given,
34
48.A long uniformly distributed load of 10 kN/m and a concentrated load of 60 kN are
moving together on the beam ABCD shown in the figure (not drawn to scale). The relative
positions of the two loads are not fixed. The maximum shear force (in kN, round off to the
nearest integer) caused at the internal hinge B due to the two loads is __________
Answer :
Solution :
35
Maximum
49.A square footing of 2m sides rests on the surface of a homogeneous soil bed having the
properties: cohesion c = 24 kPa, angle of internal friction ? = 25?, and unit weight ? = 18
kN/m
3
. Terzaghi?s bearing capacity factor ? = 25? are Nc = 25.1, Nq = 12.7, N? = 9.7, N?c =
14.8, N?q = 5.6, and N?? = 3.The ultimate bearing capacity of the foundation (in kPa, round
off to 2 decimal places) is ______.
Answer :
Solution :
Here, ? < 29
o
Footing rests on the ground
Hence, q = 0
so,
use, accordingly.
50.The dimensions of a soil sampler are given in the table.
36
For this sampler, the outside clearance ratio (in percent, round off to 2 decimal places) is
_________.
Answer :
Solution :
Given:
D4 = 90 mm
D2 = 100 mm
51.A plane frame shown in the figure (not to scale) has linear elastic springs at node H. The
spring constants are kx = ky = 5 ? 10
5
kN/m
3
and k? = 3 ? 10
5
kNm/rad.
For the externally applied moment of 30 kNm at node F, the rotation (in degrees, round off to
3 decimals) observed in the rotational spring at node H is ________
Answer :
37
Solution :
R ? 3 = 30
? R = 10 kN
From right side of FBD
R ? 3 = K? . ?
= 10
?4
rad = 0.0057
= 0.006 degree
52.Chlorine is used as the disinfectant in a municipal water treatment plant. It achieves 50
percent of disinfection efficiency measured in terms of killing the indicator microorganisms
(E-Coli) in 3 minutes. The minimum time required to achieve 99 percent disinfection
efficiency would be
A. 9.93 minutes
B. 11.93 minutes
C. 21.93 minutes
D. 19.93 minutes
Answer : D
Solution :
Disinfection eff.
38
Again,
? t = 19.93 min.
53.A confined aquifer of 15 m constant thickness is sandwiched between two aquicludes as
shown in the figure (not drawn to scale)
The heads indicated by two piezometers P and Q are 55.2 m and 34.1 m, respectively. The
aquifer has a hydraulic conductivity of 80 m/ day and its effective porosity is 0.If the distance
between the piezometers is 2500 m, the time taken by the water to travel through the aquifer
from piezometer location P to Q (in days, round off to 1 decimal place) is ______.
Answer :
Solution :
Given,
39
= 9.259 ? 10
?4
m/s
h = 55.2 ? 34.1 = 21.1 m
L = 2500 m
n = 0.25
B = 15 m
As per Darcy?s law,
V = ki
Seepage velocity
54.For a plane stress problem, the state of stress at a point P is represented by the stress
element as shown in the figure.
40
By how much angle (?) in degrees the stress element should be rotated in order to get the
planes of maximum shear stress?
A. 26.6
B. 48.3
C. 31.7
D. 13.3
Answer : C
Solution :
41
Coordinates of
= (30, 0)
In ?ABC ,
BC = 80 ? 30 = 50 MPa
AB = 25 MPa
Angle to be rotated
55.The inverse of the matix is
FirstRanker.com - FirstRanker's Choice
2
GATE CE 2019 Set 2: Questions & Solutions
General Aptitude
1.Daytime temperature in Delhi can ______ 40?C
A. Peak
B. reach
C. get
D. stand
Answer : B
Solution :
Daytime temperature in Delhi can reach 40?C
2.The growth rate of ABC Motors in 2017 was the same ________ XYZ Motors in 2016 .
A. As those of
B. As that off
C. As that of
D. As off
Answer : C
Solution :
The growth rate of ABC Motors in 2017 was the same as that of XYZ Motors in 2016.
3.Suresh wanted to lay a new carpet in his new mansion with an area of 70 55 sq. mts.
However an area of 550 sq. mts had to be left out for flower pots. If the cost of carpet is Rs.
50 per sq. mts, how much money (in Rs.) will be spent by Suresh for the carpet now?
A. Rs. 1,65,000
B. Rs. 1,92,500
C. Rs. 1,27,500
D. Rs. 2,75,000
Answer : A
3
Solution :
Area of mansion = 70 ? 55 = 3850 m
2
Area for flower pots = 550 m
2
? Area left for carpet = 3850 ? 550 = 3300m
2
? Cost = 3300 ? 50 = 165000
4.A retaining wall with measurements 30 m ? 12 m ? 6 m was constructed with bricks of
dimensions 8 cm ? 6 cm. If 60% of the wall consists of bricks used for the construction is
___________ lakhs.
A. 45
B. 30
C. 40
D. 75
Answer : A
Solution :
Volume of wall = 30 ? 12 ? 6 = 2160 m
3
= 2160 ? 106 cm
3
Total volume of bricks required = 2160 ? 106 ? 0.6 cm
3
= 1296 ? 106 cm
3
Volume of one brick = 8 ? 6 ? 6 = 288 cm
3
? No. of bricks required
= 4.5 ? 10
6
= 45 lakhs
5.Hima Das was _______ only Indian athlete to win _____________ gold for India.
A. the, many
B. an, the
C. an, a
4
D. the, a
Answer : D
Solution :
Hima Das was the only Indian athlete to win a gold for India.
6.Population of state X increased by x% and the population of state Y increased by y% from
2001 to 2011. Assume that x is greater than y. Let P be the ratio of the population of state X
to state Y in a given year. The percentage increase in P from 2001 to 2011 is_____________
A. x ? y
B.
C.
D.
Answer : C
Solution :
Let population of X is ?A? in 2001
and Population of Y is ?B? in 2001
? Population of A in 2011
& Population of B in 2011
Given,
5
% increase in P
7.The Newspaper report that over 500 hectares of tribal land spread across 28 tribal
settlements in Mohinitampuram forest division have already been ?alienated?. A top forest
official said, ?First the tribals are duped out of their land holdings. Second, the families thus
rendered landless are often forced to encroach further into the forests?.
On the basis of the information available in the paragraph, _______ is/are responsible for
duping the tribals.
A. The newspaper
B. Landless families
C. forest officials
D. it cannot be inferred who
Answer : D
Solution :
?it cannot be inferred who?
From given information, nobody can be held responsible.
8.An oil tank can be filled by pipe X in 5 hours and pipe Y in 4 hours, each pump working on
its own. When the oil tank is full and the drainage hole is open, the oil is drained in 20 hours.
6
If initially the tank was empty and someone started the two pumps together but left the
drainage hole open, how many hours will it tak for the tank to be filled? (Assume that the rate
of drainage is independent of the head)
A. 2.50
B. 1.50
C. 2.00
D. 4.00
Answer : A
Solution :
Pipe X will fill how much in one hour tank
Pipe Y will fill how much in one hour tank
Drainage will drain out how much water in 1 hour tank
? Total tank filled in one hour
tank gets filled in = 1 hour
? Full (i) tank gets filled in
9.Mohan, the manager, wants his four workers to work in pairs. No paper should work for
more than 5 hours. Ram and Johan have worked together for 5 hours. Krishna and Amir have
7
worked as a team for 2 hours. Krishan does not want to work with Ram whom should mohan
allot to work with Johan, if we wants all the workers to continue working?
A. Amir
B. Krishna
C. Ram
D. None of the three
Answer : B
Solution :
Conditions given:
(i) Ram & John have worked for 5 hours.
(ii) Krishna doesn?t want to work with Ram.
(iii) No pair should work beyond 5 hours.
Hence, Krishna should work with John to satisfy the above conditions.
10.?Popular Hindi fiction, despite ? or perhaps because of ? its wide reach, often does not
appear in our cinema. As ideals that viewers are meant to look up to rather than identify with,
Hindi film protagonisits usually read books of apsirational value: textbooks, English books,
or high value literature?.
Which one of the following CANNOT be inferred from the paragraph above?
A. Textbooks, English books or high literature have apsirational value, but not popular Hindi
fiction
B. People do not look up to writers of textbooks, English book or high value literature
C. Though popular hindi fiction was wide readh, it often does not appear in the movies
D. Protagonists in Hindi movies, being ideals for viewers, read only books of aspirational
value.
Answer : B
Solution :
People do not look up to writers of textbooks, English book or high value literature.
8
Civil Engineering
11.What is curl of the vector field 2x
2
yi + 5z
2
j - 4yzk?
A. - 14zi - 2x
2
k
B. 6zi + 4xj - 2x
2
k
C. 6zi + 8xyj + 2x
2
yk
D. -14zi + 6yj + 2x
2
k
Answer : A
Solution :
12.Analysis of a water sample revealed that the sample contains the following species.
9
Concentrations of which of the species will be required to compute alkalinity?
A.
B.
C.
D.
Answer : A
Solution :
H2CO3 and HCO3
-
never come together
13.The value of the function f(x) is given at n distinct values of x and its value is to be
interpolated at the point x
*
using all the n points. The estimate is obtained first by the
Lagrange polynomial, denoted by IL, and then by the Newton polynomial, denoted by IN.
Which one of the following statements is correct?
A. IL is always greater than IN
B. No definite relation exists between IL and IN.
C. IL is always less than IN
D. IL and IN are always equal
Answer : B
Solution :
Lagrange?s form is more efficient when you have to interpolate several data sets on the same
data point.
Newton?s form is more efficient when you have to interpolate data incrementally. So no
relationship between both.
14.If the fineness modulus of a sample of the fine aggregates is 4.3, the mean size of the
particles in the sample is between
10
A. 150 ?m and 300 ?m
B. 2.36 mm and 4.75 mm
C. 300 ?m and 600 ?m
D. 1.18 mm and 2.36 mm
Answer : D
Solution :
150 ?m, 300 ?m, 600 ?m, 1.18 mm,
2.36 mm, 4.75 mm, 10 mm, 20 mm,
40 mm, 80 mm
150 ? 1
300 ? 2
600 ? 3
4.75 - 6
15.The command area of a canal grows only one crop, i.e., wheat. The base period of wheat
is 120 days and its total water requirement, ?, is 40 cm. If the canal discharge is 2 m
3
/s, the
area, in hectares, rounded off to the nearest integer, which could be irrigated (neglecting all
losses) is ______________
Answer :
Solution :
B = 120 days
? = 0.4 m
and ? = 8.64B/D
? D = 2592 ha per (m
3
/s)
? For 2m
3
/sec water, area will be 5184 ha
11
16.The characteristic compressive strength of concrete required in a project is 25 MPa and
standard deviation in the observed compressive strength expected at site is 4 MPa. The
average compressive strength of cubes tested at different water-cement (w/c) ratios using the
same material as is used for the project is given in the table.
The water-cement ratio (in percent, round off to the lower integer) to be used in the mix
is________
Answer :
Solution :
fck = 25 ; ? = 4 MPa
fm = fck + 1.65? = 31.6 MPa
Using interpolation
= 46.7 (Rounded off to the lowest integer).
17.A solid sphere of radius, r, and made of material with density ?s, is moving through the
atmosphere (constant pressure, p) with a velocity, ?. The net force ONLY due to atmospheric
pressure (Fp) acting on the sphere at any time, t, is
A.
B. Zero
C. ?r
2
p
D. 4?r
2
p
Answer : B
Solution :
Force = area ? P
12
Net force will be zero as pressure acts from all sides.
18.An earthen dam of height H is made of cohesive soil whose cohesion and unit weight are c
and ?, respectively. If the factor of safety against cohesion is Fc, the Taylor?s stability
A.
B.
C.
D.
Answer : C
Solution :
Taylor?s stability number,
19.A closed thin walled tube has thickness, t, mean enclosed area within the boundary of the
centrline of tube?s thickness, Am, and shear stress ?. Torsional moment of resistance, T of the
section would be
A.
B.
13
C.
D.
Answer : A
Solution :
20.For a channel section subjected to a downward vertical shear force at its centroid, which
one of the following represents the correct distribution of shear stress in flange and web?
A.
B.
C.
14
D.
Answer : C
Solution :
Standard result
21.The degree of static indeterminancy of the plane frame is shown in the figure is ________
Answer :
Solution :
Ds = 3C ? R'
C = 6
Ds = (3 ? 6 ? 2) ? 1 (due to hinge)
= 15
15
22.Structural failures considered in the mechanistic method of bituminous pavement design
are
A. Shear and slippage
B. Fatique and Rutting
C. Fatique and shear
D. Rutting and shear
Answer : B
Solution :
As per IRC66:2012
23.Which one of the options contains ONLY primary air pollutants?
A. Ozone and peroxyacetyl nitrate
B. Nitrogen oxides and peroxyacetyl nitrate
C. Hydrocarbons and nitrogen oxides
D. Hydrocarbons and ozone
Answer : C
Solution :
Ozone and PAN are secondary air pollutants.
24.The following inequality is true for all x close to 0.
What is the value of
A. 2
B. 1/2
C. 0
16
D. 1
Answer : A
Solution :
It is form
L?s hospital rule (differentiate)
Putting 0 everywhere ? still form.
Differentiating numerator and denominator again,
25.The velocity field in a flow system is given by v = 2i + (x + y)j + (xyz)k. The acceleration
of the fluid at (1, 1, 2) is
A. j + k
B. 2i + 10 k
C. 4j + 10k
D. 4i + 12 k
Answer : C
Solution :
17
and
= 2 + (x + y) + (xyz)(0) + 0
and
= 2(yz) + (x + y)(xz) + (xyz)(xy) + 0
az = 2(1 ? 2) + (1 + 1)(1 ? 2) + (1 ? 1
? 2) (1?1)
= 10k
Therefore,
26.A steel column is restrained against both translation and rotation at one end and is
restrained only against rotation but free to translate at the other end. Theoretical and design
(IS: 800 ? 2007) values, respectively, of effective length factor of the column are
18
A. 1.0 and 1.0
B. 1.2 and 1.0
C. 1.2 and 1.2
D. 1.0 and 1.2
Answer : D
Solution :
As per IS:800-2007
27.Euclindean norm (length) of the vector [4 ?2 ? 6]
T
is
A. ?48
B. ?24
C. ?12
D. ?56
Answer : D
Solution :
The Euclidean norm assigns to each vector the length of its arrow. Because of this,
the Euclidean norm is often known as the magnitude. So,
Length
28.An inflow hydrograph is routed through a reservoir to produce an outflow hydrograph.
The peak flow of the inflow hydrograph is PI and the time of occurrence of the peak is tI. The
peak flow of the outflow hydrograph is P0 and the time of occurance of the peak is t0. Which
one of the following statements is correct?
A. PI < P0 and tI > t0
B. PI > P0 and tI > t0
C. PI < P0 and tI < t0
D. PI > P0 and tI < t0
Answer : D
Solution :
19
Pl > Po ; tl < to
29.Construction of a new building founded on a clayey soil was completed in January In
January 2014, the average consolidation settlement of the foundation in clay was recorded as
10 mm. The ultimate consolidation settlement was estimated in design as 40 mm.
Considering double drainage to occur at the clayey soil site, the expected consolidation
settlement in January 2019 (in mm, round off to the nearest integer) will be _____________
Answer :
Solution :
Ultimate consolidation = 40 mm
Recorded consolidation = 10 mm
? Total recorded consolidation
? 40 ? 0.375
20
30.The notation ?SC? as per Indian standard Soil Classification System refers to
A. Clayey silt
B. Sandy clay
C. Calyey sand
D. Silty clay
Answer : C
Solution :
SC : clayey sand
31.The speed-density relationship in a mid-block section of a highway follows the
Greenshield?s model. If the free flow speed is vf and the jam density is kj, the maximum flow
observed on this ection is
A.
B.
C. fvkj
D.
Answer : D
Solution :
?(1)
21
32.An anisotropic soil deposit has coefficient of permeability in vertical and horizontal
directions as kz and kx, respectively. For constructing a flow net, the horizontal dimension of
the problem?s geometry is transformed by a multiplying factor of
A.
B.
C.
D.
Answer : C
Solution :
Flow net for anisotropic soil.
?(i)
If we transformed geometry in x direction let x cordinate be transformed to the new
coordinate xt by the transformation.
22
?(ii)
From eq. (i) & (ii),
Hence prove
So, multiplied factor
33.The Laplace transform of sinh (at) is
A.
B.
C.
D.
Answer : C
Solution :
Laplace transform of sinh (at) =
23
34.The data from a closed traverse survey PQRS (run in the clockwise direction) are given in
the table
The closing error for the traverse PQRS (in degrees) is________
Answer :
Solution :
n = 4 (number of sides of closed traverse)
(2n ? 4) ? 90? = 360?
so, error in included angle
= (88 + 92 + 94 + 89) ? 360 = +3?
35.A vehicle is moving on a road of grade +4% at a speed of 20 m/s. Consider the coefficient
of rolling friction as 0.46 and acceleration due to gravity as 10 m/s
2
. On applying brakes to
reach a speed of 10 m/s, the required braking distance (in m, round off to nearest integer)
along the horizontal, is ______.
Answer :
Solution :
Given: grade = +4%
V1 = 20 m/sec.
f = 0.46
g = 10 m/sec.
V1 = 10 m/sec.
24
We know,
36.A broad gauge railway line passes through a horizontal curved section (radius = 875 m) of
length 200 m. The allowable speed on this portion is 100 km/h. For calculating the cant,
consider the gauge as centre-to-centre distance between the rail heads, equal to 1750mm, The
maximum permissible cant (in mm, round off to 1 decimal place) with respect to the centreto-
centre distance between the rail heads is ______.
Answer :
Solution :
Given data:
R = 875 mm
Allowable speed = 100 kmph
Gauge length G = 1750 mm
Allowable cant
37.When a specimen of M25 concrete is loaded to a stress level of 12.5 MPa, a strain of 500
? 10
?6
is recorded. If this load is allowed to stand for a long time, the strain increases to 1000
? 10
?6
. In accordance with provisions of IS: 456-2000, considering the long-term effects, the
effective modulus of elasticity of the concrete (in MPa) is ________
Answer :
Solution :
25
Short term strain = 500 ? 10
?6
Long term strain = 1000 ? 10
?6
So, creep coefficient,
? = 1
Long-term effective modulus
= 12500 N/mm
2
= 12500 MPa
or
38.The probability density function of a continuous random variable distributed uniformly
between x and y (for y > x) is
A.
B. x ? y
C. y ? x
D.
Answer : D
Solution :
Probability density function of a uniformly distributed random variable.
26
39.The uniform arrival and uniform service rates observed on an approach road to a
signalized intersection are 20 and 50 vehicles/minutes, respectively. For this signal, the red
time is 30 s, the effective green time is 30 s, and the cycle length is 60s. Assuming that
initially there are no vehicles in the queue, the average delay per vehicle using the approach
road during a cycle length (in s, round off to 2 decimal places) is _______
Answer :
Solution :
Average delay per vehicle
= 12.5 sec
40.A rolled I-section beam is supported on a 75 mm wide bearing plate as shown in the
figure. Thickness of flange and web of the I-section are 20 mm and 8mm, respectively. Root
27
radius of the I-section is 10mm. Assuming: material yield stress,
fy = 250 MPa and partial safety factor for material, ?mo = 1.10
As per IS: 800-2007, the web bearing strength (in kN, round off to 2 decimal places) of the
beam is _______
Answer :
Solution :
Effective area in bearing = [75 + 2.5 (flange thickness + root radius)] ? 8
= [75 + 2.5 (20 + 10)] ? 8
= 1200 mm
2
so, web bearing strength
= 272.73 kN
41.The critical bending compressive stress in the extreme fibre of a structural steel section is
1000 MPa. It is given that the yield strength of the steel is 250 MPa, width of flange is 250
mm and thickness of flange is 15 mm. As per the provisions of IS: 800-2007, the
nondimensional slendeness ratio of the steel crosssection is
28
A. 0.50
B. 2.00
C. 0.25
D. 0.75
Answer : A
Solution :
Non-dimensional slenderness ratio
42.At the foot of a spillyway, water flows at a depth of 23 cm with a velocity of 8.1 m/s, as
shown in the figure.
The flow enters as an M-3 profile in the long wide rectangular channel with bed
slope and Manning?s n = 0.A hydraulic jump is formed at a certain distance from
the foot of the spillway. Assume the acceleration due to gravity, g = 9.81 m/s
2
. Just before the
hydraulic jump, the depth of flow y1 (in m, round off to 2 decimal places) is _________
Answer :
Solution :
Given data:
y = 0.23 m
V = 8.1 m/sec.
Slope,
29
h = 0.015
g = 9.81 m/sec
2
q = yV = 8.1 ? 0.23
= 1.863 m
3
/sec/m
It is given that flow enters as an M-3 profile in the long wide rectangular channel with bed
slope
From manning equation at M3 profile section.
[for wide channel R = y]
The flow profile will follow normal depth (yn) after jump.
For wide rectangular channel,
Here, yn = y 2 = 1.11 m
30
Again,
? y 1 = 0.417 m < y c [supercritical]
43.Consider the reactor shown in the figure. The concentration (in mg/l) of a compound in
the influent and effluent are C0 and C, flow rate through the reactor is Q m
3
/h respectively.
The compound is degraded in the reactor following the first order reactions. The mixing
condition of the reactor Complete Mix Flow Reactor (CMFR) or a plug-flow reactor (PFR).
The length of the reactor can be adjusted in these two mixing conditions to LCMFR and
LPER while keeping the cross-section of the reactor constant. Assuming steady state and for
C/C0 = 0.8, the value of LCMFR/LPER (round off to 2 decimal places) is _______
Answer :
Solution :
A = constant
Q = AL
For plug flow
[ detention time for plug flow reaction]
For completely mix = C =
[ detention time for completely mix reaction]
31
Also,
44.A series of perpendicular offsets taken from a curved boundary wall to a straight survey
line at an interval of 6 m are 1.22, 1.67, 2.04, 2.34, 2.14, 1.87, and 1.15 m. The area (in m2,
round off to 2 decimal places) boundary by the survey line, curved boundary wall, the first
and the last offsets, determined using Simpson?s rule, is _______.
Answer :
Solution :
Area by simpson?s rule
45.A water treatment plant treats 6000 m
3
of water per day. As a part of the treatment
process, discrete particles are required to be settled in a clarifier. A column test indicates that
an overflow rate of 1.5 m per hour would produce the desired removal of particles through
32
settling in the clarifier having a depth of 3.0 m. The volume of the required clarifier, (in m
3
,
round off to 1 decimal place) would be
Answer :
Solution :
Given data:
Flow rate = 6000 m
3
/day
Over flow rate = 1.5 m/hour
= 1.5 ? 24 m/day = 36 m/day
Flow area
= 166.67 m
2
Volume required for clarifier = Flow area ? depth
= 166.67 ? 3 = 500 m
3
46.A flexible pavement has the following class of loads during a particular hour of the day.
i. 80 buses with 2-axles (each axle load of 40 kN);
ii. 160 trucks with 2-axles (front and rear axle loads of 40 kN and 80 kN, respectively)
The equivalent standard axle load repetitions for this vehicle combination as per IRC:37-2012
would be
A. 320
B. 250
C. 240
D. 180
Answer : D
Solution :
33
= 5 + 5 + 10 + 160
= 180
47.Constant head permeability tests were performed on two soil specimens, S1 and SThe
ratio of height of the two specimens (LS1: LS2) is 1.5, the ratio of the diameter of specimens
(DS1:DS2) is 0.5, and the ratio of the constant head (hs1:hs2) applied on the specimens is 2.0. If
the discharge from both the specimens is equal, the ratio of the permeability of the soil
specimens (ks1:ks2) is ________
Answer :
Solution :
For constant head permeability test,
Q ? discharge
L ? length of specimen
a ? area of cross-section of specimen
h ? constant head
Given,
34
48.A long uniformly distributed load of 10 kN/m and a concentrated load of 60 kN are
moving together on the beam ABCD shown in the figure (not drawn to scale). The relative
positions of the two loads are not fixed. The maximum shear force (in kN, round off to the
nearest integer) caused at the internal hinge B due to the two loads is __________
Answer :
Solution :
35
Maximum
49.A square footing of 2m sides rests on the surface of a homogeneous soil bed having the
properties: cohesion c = 24 kPa, angle of internal friction ? = 25?, and unit weight ? = 18
kN/m
3
. Terzaghi?s bearing capacity factor ? = 25? are Nc = 25.1, Nq = 12.7, N? = 9.7, N?c =
14.8, N?q = 5.6, and N?? = 3.The ultimate bearing capacity of the foundation (in kPa, round
off to 2 decimal places) is ______.
Answer :
Solution :
Here, ? < 29
o
Footing rests on the ground
Hence, q = 0
so,
use, accordingly.
50.The dimensions of a soil sampler are given in the table.
36
For this sampler, the outside clearance ratio (in percent, round off to 2 decimal places) is
_________.
Answer :
Solution :
Given:
D4 = 90 mm
D2 = 100 mm
51.A plane frame shown in the figure (not to scale) has linear elastic springs at node H. The
spring constants are kx = ky = 5 ? 10
5
kN/m
3
and k? = 3 ? 10
5
kNm/rad.
For the externally applied moment of 30 kNm at node F, the rotation (in degrees, round off to
3 decimals) observed in the rotational spring at node H is ________
Answer :
37
Solution :
R ? 3 = 30
? R = 10 kN
From right side of FBD
R ? 3 = K? . ?
= 10
?4
rad = 0.0057
= 0.006 degree
52.Chlorine is used as the disinfectant in a municipal water treatment plant. It achieves 50
percent of disinfection efficiency measured in terms of killing the indicator microorganisms
(E-Coli) in 3 minutes. The minimum time required to achieve 99 percent disinfection
efficiency would be
A. 9.93 minutes
B. 11.93 minutes
C. 21.93 minutes
D. 19.93 minutes
Answer : D
Solution :
Disinfection eff.
38
Again,
? t = 19.93 min.
53.A confined aquifer of 15 m constant thickness is sandwiched between two aquicludes as
shown in the figure (not drawn to scale)
The heads indicated by two piezometers P and Q are 55.2 m and 34.1 m, respectively. The
aquifer has a hydraulic conductivity of 80 m/ day and its effective porosity is 0.If the distance
between the piezometers is 2500 m, the time taken by the water to travel through the aquifer
from piezometer location P to Q (in days, round off to 1 decimal place) is ______.
Answer :
Solution :
Given,
39
= 9.259 ? 10
?4
m/s
h = 55.2 ? 34.1 = 21.1 m
L = 2500 m
n = 0.25
B = 15 m
As per Darcy?s law,
V = ki
Seepage velocity
54.For a plane stress problem, the state of stress at a point P is represented by the stress
element as shown in the figure.
40
By how much angle (?) in degrees the stress element should be rotated in order to get the
planes of maximum shear stress?
A. 26.6
B. 48.3
C. 31.7
D. 13.3
Answer : C
Solution :
41
Coordinates of
= (30, 0)
In ?ABC ,
BC = 80 ? 30 = 50 MPa
AB = 25 MPa
Angle to be rotated
55.The inverse of the matix is
42
A.
B.
C.
D.
Answer : B
Solution :
Det. of matrix, |A| = 2 (12 ? 2) ? 3(16 ? 1) + 4(8 ? 3)
= 20 ? 45 + 20
= ?5
(adj A) = (cof A)'
cof of A11 = 12 ? 2 = 10
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2
GATE CE 2019 Set 2: Questions & Solutions
General Aptitude
1.Daytime temperature in Delhi can ______ 40?C
A. Peak
B. reach
C. get
D. stand
Answer : B
Solution :
Daytime temperature in Delhi can reach 40?C
2.The growth rate of ABC Motors in 2017 was the same ________ XYZ Motors in 2016 .
A. As those of
B. As that off
C. As that of
D. As off
Answer : C
Solution :
The growth rate of ABC Motors in 2017 was the same as that of XYZ Motors in 2016.
3.Suresh wanted to lay a new carpet in his new mansion with an area of 70 55 sq. mts.
However an area of 550 sq. mts had to be left out for flower pots. If the cost of carpet is Rs.
50 per sq. mts, how much money (in Rs.) will be spent by Suresh for the carpet now?
A. Rs. 1,65,000
B. Rs. 1,92,500
C. Rs. 1,27,500
D. Rs. 2,75,000
Answer : A
3
Solution :
Area of mansion = 70 ? 55 = 3850 m
2
Area for flower pots = 550 m
2
? Area left for carpet = 3850 ? 550 = 3300m
2
? Cost = 3300 ? 50 = 165000
4.A retaining wall with measurements 30 m ? 12 m ? 6 m was constructed with bricks of
dimensions 8 cm ? 6 cm. If 60% of the wall consists of bricks used for the construction is
___________ lakhs.
A. 45
B. 30
C. 40
D. 75
Answer : A
Solution :
Volume of wall = 30 ? 12 ? 6 = 2160 m
3
= 2160 ? 106 cm
3
Total volume of bricks required = 2160 ? 106 ? 0.6 cm
3
= 1296 ? 106 cm
3
Volume of one brick = 8 ? 6 ? 6 = 288 cm
3
? No. of bricks required
= 4.5 ? 10
6
= 45 lakhs
5.Hima Das was _______ only Indian athlete to win _____________ gold for India.
A. the, many
B. an, the
C. an, a
4
D. the, a
Answer : D
Solution :
Hima Das was the only Indian athlete to win a gold for India.
6.Population of state X increased by x% and the population of state Y increased by y% from
2001 to 2011. Assume that x is greater than y. Let P be the ratio of the population of state X
to state Y in a given year. The percentage increase in P from 2001 to 2011 is_____________
A. x ? y
B.
C.
D.
Answer : C
Solution :
Let population of X is ?A? in 2001
and Population of Y is ?B? in 2001
? Population of A in 2011
& Population of B in 2011
Given,
5
% increase in P
7.The Newspaper report that over 500 hectares of tribal land spread across 28 tribal
settlements in Mohinitampuram forest division have already been ?alienated?. A top forest
official said, ?First the tribals are duped out of their land holdings. Second, the families thus
rendered landless are often forced to encroach further into the forests?.
On the basis of the information available in the paragraph, _______ is/are responsible for
duping the tribals.
A. The newspaper
B. Landless families
C. forest officials
D. it cannot be inferred who
Answer : D
Solution :
?it cannot be inferred who?
From given information, nobody can be held responsible.
8.An oil tank can be filled by pipe X in 5 hours and pipe Y in 4 hours, each pump working on
its own. When the oil tank is full and the drainage hole is open, the oil is drained in 20 hours.
6
If initially the tank was empty and someone started the two pumps together but left the
drainage hole open, how many hours will it tak for the tank to be filled? (Assume that the rate
of drainage is independent of the head)
A. 2.50
B. 1.50
C. 2.00
D. 4.00
Answer : A
Solution :
Pipe X will fill how much in one hour tank
Pipe Y will fill how much in one hour tank
Drainage will drain out how much water in 1 hour tank
? Total tank filled in one hour
tank gets filled in = 1 hour
? Full (i) tank gets filled in
9.Mohan, the manager, wants his four workers to work in pairs. No paper should work for
more than 5 hours. Ram and Johan have worked together for 5 hours. Krishna and Amir have
7
worked as a team for 2 hours. Krishan does not want to work with Ram whom should mohan
allot to work with Johan, if we wants all the workers to continue working?
A. Amir
B. Krishna
C. Ram
D. None of the three
Answer : B
Solution :
Conditions given:
(i) Ram & John have worked for 5 hours.
(ii) Krishna doesn?t want to work with Ram.
(iii) No pair should work beyond 5 hours.
Hence, Krishna should work with John to satisfy the above conditions.
10.?Popular Hindi fiction, despite ? or perhaps because of ? its wide reach, often does not
appear in our cinema. As ideals that viewers are meant to look up to rather than identify with,
Hindi film protagonisits usually read books of apsirational value: textbooks, English books,
or high value literature?.
Which one of the following CANNOT be inferred from the paragraph above?
A. Textbooks, English books or high literature have apsirational value, but not popular Hindi
fiction
B. People do not look up to writers of textbooks, English book or high value literature
C. Though popular hindi fiction was wide readh, it often does not appear in the movies
D. Protagonists in Hindi movies, being ideals for viewers, read only books of aspirational
value.
Answer : B
Solution :
People do not look up to writers of textbooks, English book or high value literature.
8
Civil Engineering
11.What is curl of the vector field 2x
2
yi + 5z
2
j - 4yzk?
A. - 14zi - 2x
2
k
B. 6zi + 4xj - 2x
2
k
C. 6zi + 8xyj + 2x
2
yk
D. -14zi + 6yj + 2x
2
k
Answer : A
Solution :
12.Analysis of a water sample revealed that the sample contains the following species.
9
Concentrations of which of the species will be required to compute alkalinity?
A.
B.
C.
D.
Answer : A
Solution :
H2CO3 and HCO3
-
never come together
13.The value of the function f(x) is given at n distinct values of x and its value is to be
interpolated at the point x
*
using all the n points. The estimate is obtained first by the
Lagrange polynomial, denoted by IL, and then by the Newton polynomial, denoted by IN.
Which one of the following statements is correct?
A. IL is always greater than IN
B. No definite relation exists between IL and IN.
C. IL is always less than IN
D. IL and IN are always equal
Answer : B
Solution :
Lagrange?s form is more efficient when you have to interpolate several data sets on the same
data point.
Newton?s form is more efficient when you have to interpolate data incrementally. So no
relationship between both.
14.If the fineness modulus of a sample of the fine aggregates is 4.3, the mean size of the
particles in the sample is between
10
A. 150 ?m and 300 ?m
B. 2.36 mm and 4.75 mm
C. 300 ?m and 600 ?m
D. 1.18 mm and 2.36 mm
Answer : D
Solution :
150 ?m, 300 ?m, 600 ?m, 1.18 mm,
2.36 mm, 4.75 mm, 10 mm, 20 mm,
40 mm, 80 mm
150 ? 1
300 ? 2
600 ? 3
4.75 - 6
15.The command area of a canal grows only one crop, i.e., wheat. The base period of wheat
is 120 days and its total water requirement, ?, is 40 cm. If the canal discharge is 2 m
3
/s, the
area, in hectares, rounded off to the nearest integer, which could be irrigated (neglecting all
losses) is ______________
Answer :
Solution :
B = 120 days
? = 0.4 m
and ? = 8.64B/D
? D = 2592 ha per (m
3
/s)
? For 2m
3
/sec water, area will be 5184 ha
11
16.The characteristic compressive strength of concrete required in a project is 25 MPa and
standard deviation in the observed compressive strength expected at site is 4 MPa. The
average compressive strength of cubes tested at different water-cement (w/c) ratios using the
same material as is used for the project is given in the table.
The water-cement ratio (in percent, round off to the lower integer) to be used in the mix
is________
Answer :
Solution :
fck = 25 ; ? = 4 MPa
fm = fck + 1.65? = 31.6 MPa
Using interpolation
= 46.7 (Rounded off to the lowest integer).
17.A solid sphere of radius, r, and made of material with density ?s, is moving through the
atmosphere (constant pressure, p) with a velocity, ?. The net force ONLY due to atmospheric
pressure (Fp) acting on the sphere at any time, t, is
A.
B. Zero
C. ?r
2
p
D. 4?r
2
p
Answer : B
Solution :
Force = area ? P
12
Net force will be zero as pressure acts from all sides.
18.An earthen dam of height H is made of cohesive soil whose cohesion and unit weight are c
and ?, respectively. If the factor of safety against cohesion is Fc, the Taylor?s stability
A.
B.
C.
D.
Answer : C
Solution :
Taylor?s stability number,
19.A closed thin walled tube has thickness, t, mean enclosed area within the boundary of the
centrline of tube?s thickness, Am, and shear stress ?. Torsional moment of resistance, T of the
section would be
A.
B.
13
C.
D.
Answer : A
Solution :
20.For a channel section subjected to a downward vertical shear force at its centroid, which
one of the following represents the correct distribution of shear stress in flange and web?
A.
B.
C.
14
D.
Answer : C
Solution :
Standard result
21.The degree of static indeterminancy of the plane frame is shown in the figure is ________
Answer :
Solution :
Ds = 3C ? R'
C = 6
Ds = (3 ? 6 ? 2) ? 1 (due to hinge)
= 15
15
22.Structural failures considered in the mechanistic method of bituminous pavement design
are
A. Shear and slippage
B. Fatique and Rutting
C. Fatique and shear
D. Rutting and shear
Answer : B
Solution :
As per IRC66:2012
23.Which one of the options contains ONLY primary air pollutants?
A. Ozone and peroxyacetyl nitrate
B. Nitrogen oxides and peroxyacetyl nitrate
C. Hydrocarbons and nitrogen oxides
D. Hydrocarbons and ozone
Answer : C
Solution :
Ozone and PAN are secondary air pollutants.
24.The following inequality is true for all x close to 0.
What is the value of
A. 2
B. 1/2
C. 0
16
D. 1
Answer : A
Solution :
It is form
L?s hospital rule (differentiate)
Putting 0 everywhere ? still form.
Differentiating numerator and denominator again,
25.The velocity field in a flow system is given by v = 2i + (x + y)j + (xyz)k. The acceleration
of the fluid at (1, 1, 2) is
A. j + k
B. 2i + 10 k
C. 4j + 10k
D. 4i + 12 k
Answer : C
Solution :
17
and
= 2 + (x + y) + (xyz)(0) + 0
and
= 2(yz) + (x + y)(xz) + (xyz)(xy) + 0
az = 2(1 ? 2) + (1 + 1)(1 ? 2) + (1 ? 1
? 2) (1?1)
= 10k
Therefore,
26.A steel column is restrained against both translation and rotation at one end and is
restrained only against rotation but free to translate at the other end. Theoretical and design
(IS: 800 ? 2007) values, respectively, of effective length factor of the column are
18
A. 1.0 and 1.0
B. 1.2 and 1.0
C. 1.2 and 1.2
D. 1.0 and 1.2
Answer : D
Solution :
As per IS:800-2007
27.Euclindean norm (length) of the vector [4 ?2 ? 6]
T
is
A. ?48
B. ?24
C. ?12
D. ?56
Answer : D
Solution :
The Euclidean norm assigns to each vector the length of its arrow. Because of this,
the Euclidean norm is often known as the magnitude. So,
Length
28.An inflow hydrograph is routed through a reservoir to produce an outflow hydrograph.
The peak flow of the inflow hydrograph is PI and the time of occurrence of the peak is tI. The
peak flow of the outflow hydrograph is P0 and the time of occurance of the peak is t0. Which
one of the following statements is correct?
A. PI < P0 and tI > t0
B. PI > P0 and tI > t0
C. PI < P0 and tI < t0
D. PI > P0 and tI < t0
Answer : D
Solution :
19
Pl > Po ; tl < to
29.Construction of a new building founded on a clayey soil was completed in January In
January 2014, the average consolidation settlement of the foundation in clay was recorded as
10 mm. The ultimate consolidation settlement was estimated in design as 40 mm.
Considering double drainage to occur at the clayey soil site, the expected consolidation
settlement in January 2019 (in mm, round off to the nearest integer) will be _____________
Answer :
Solution :
Ultimate consolidation = 40 mm
Recorded consolidation = 10 mm
? Total recorded consolidation
? 40 ? 0.375
20
30.The notation ?SC? as per Indian standard Soil Classification System refers to
A. Clayey silt
B. Sandy clay
C. Calyey sand
D. Silty clay
Answer : C
Solution :
SC : clayey sand
31.The speed-density relationship in a mid-block section of a highway follows the
Greenshield?s model. If the free flow speed is vf and the jam density is kj, the maximum flow
observed on this ection is
A.
B.
C. fvkj
D.
Answer : D
Solution :
?(1)
21
32.An anisotropic soil deposit has coefficient of permeability in vertical and horizontal
directions as kz and kx, respectively. For constructing a flow net, the horizontal dimension of
the problem?s geometry is transformed by a multiplying factor of
A.
B.
C.
D.
Answer : C
Solution :
Flow net for anisotropic soil.
?(i)
If we transformed geometry in x direction let x cordinate be transformed to the new
coordinate xt by the transformation.
22
?(ii)
From eq. (i) & (ii),
Hence prove
So, multiplied factor
33.The Laplace transform of sinh (at) is
A.
B.
C.
D.
Answer : C
Solution :
Laplace transform of sinh (at) =
23
34.The data from a closed traverse survey PQRS (run in the clockwise direction) are given in
the table
The closing error for the traverse PQRS (in degrees) is________
Answer :
Solution :
n = 4 (number of sides of closed traverse)
(2n ? 4) ? 90? = 360?
so, error in included angle
= (88 + 92 + 94 + 89) ? 360 = +3?
35.A vehicle is moving on a road of grade +4% at a speed of 20 m/s. Consider the coefficient
of rolling friction as 0.46 and acceleration due to gravity as 10 m/s
2
. On applying brakes to
reach a speed of 10 m/s, the required braking distance (in m, round off to nearest integer)
along the horizontal, is ______.
Answer :
Solution :
Given: grade = +4%
V1 = 20 m/sec.
f = 0.46
g = 10 m/sec.
V1 = 10 m/sec.
24
We know,
36.A broad gauge railway line passes through a horizontal curved section (radius = 875 m) of
length 200 m. The allowable speed on this portion is 100 km/h. For calculating the cant,
consider the gauge as centre-to-centre distance between the rail heads, equal to 1750mm, The
maximum permissible cant (in mm, round off to 1 decimal place) with respect to the centreto-
centre distance between the rail heads is ______.
Answer :
Solution :
Given data:
R = 875 mm
Allowable speed = 100 kmph
Gauge length G = 1750 mm
Allowable cant
37.When a specimen of M25 concrete is loaded to a stress level of 12.5 MPa, a strain of 500
? 10
?6
is recorded. If this load is allowed to stand for a long time, the strain increases to 1000
? 10
?6
. In accordance with provisions of IS: 456-2000, considering the long-term effects, the
effective modulus of elasticity of the concrete (in MPa) is ________
Answer :
Solution :
25
Short term strain = 500 ? 10
?6
Long term strain = 1000 ? 10
?6
So, creep coefficient,
? = 1
Long-term effective modulus
= 12500 N/mm
2
= 12500 MPa
or
38.The probability density function of a continuous random variable distributed uniformly
between x and y (for y > x) is
A.
B. x ? y
C. y ? x
D.
Answer : D
Solution :
Probability density function of a uniformly distributed random variable.
26
39.The uniform arrival and uniform service rates observed on an approach road to a
signalized intersection are 20 and 50 vehicles/minutes, respectively. For this signal, the red
time is 30 s, the effective green time is 30 s, and the cycle length is 60s. Assuming that
initially there are no vehicles in the queue, the average delay per vehicle using the approach
road during a cycle length (in s, round off to 2 decimal places) is _______
Answer :
Solution :
Average delay per vehicle
= 12.5 sec
40.A rolled I-section beam is supported on a 75 mm wide bearing plate as shown in the
figure. Thickness of flange and web of the I-section are 20 mm and 8mm, respectively. Root
27
radius of the I-section is 10mm. Assuming: material yield stress,
fy = 250 MPa and partial safety factor for material, ?mo = 1.10
As per IS: 800-2007, the web bearing strength (in kN, round off to 2 decimal places) of the
beam is _______
Answer :
Solution :
Effective area in bearing = [75 + 2.5 (flange thickness + root radius)] ? 8
= [75 + 2.5 (20 + 10)] ? 8
= 1200 mm
2
so, web bearing strength
= 272.73 kN
41.The critical bending compressive stress in the extreme fibre of a structural steel section is
1000 MPa. It is given that the yield strength of the steel is 250 MPa, width of flange is 250
mm and thickness of flange is 15 mm. As per the provisions of IS: 800-2007, the
nondimensional slendeness ratio of the steel crosssection is
28
A. 0.50
B. 2.00
C. 0.25
D. 0.75
Answer : A
Solution :
Non-dimensional slenderness ratio
42.At the foot of a spillyway, water flows at a depth of 23 cm with a velocity of 8.1 m/s, as
shown in the figure.
The flow enters as an M-3 profile in the long wide rectangular channel with bed
slope and Manning?s n = 0.A hydraulic jump is formed at a certain distance from
the foot of the spillway. Assume the acceleration due to gravity, g = 9.81 m/s
2
. Just before the
hydraulic jump, the depth of flow y1 (in m, round off to 2 decimal places) is _________
Answer :
Solution :
Given data:
y = 0.23 m
V = 8.1 m/sec.
Slope,
29
h = 0.015
g = 9.81 m/sec
2
q = yV = 8.1 ? 0.23
= 1.863 m
3
/sec/m
It is given that flow enters as an M-3 profile in the long wide rectangular channel with bed
slope
From manning equation at M3 profile section.
[for wide channel R = y]
The flow profile will follow normal depth (yn) after jump.
For wide rectangular channel,
Here, yn = y 2 = 1.11 m
30
Again,
? y 1 = 0.417 m < y c [supercritical]
43.Consider the reactor shown in the figure. The concentration (in mg/l) of a compound in
the influent and effluent are C0 and C, flow rate through the reactor is Q m
3
/h respectively.
The compound is degraded in the reactor following the first order reactions. The mixing
condition of the reactor Complete Mix Flow Reactor (CMFR) or a plug-flow reactor (PFR).
The length of the reactor can be adjusted in these two mixing conditions to LCMFR and
LPER while keeping the cross-section of the reactor constant. Assuming steady state and for
C/C0 = 0.8, the value of LCMFR/LPER (round off to 2 decimal places) is _______
Answer :
Solution :
A = constant
Q = AL
For plug flow
[ detention time for plug flow reaction]
For completely mix = C =
[ detention time for completely mix reaction]
31
Also,
44.A series of perpendicular offsets taken from a curved boundary wall to a straight survey
line at an interval of 6 m are 1.22, 1.67, 2.04, 2.34, 2.14, 1.87, and 1.15 m. The area (in m2,
round off to 2 decimal places) boundary by the survey line, curved boundary wall, the first
and the last offsets, determined using Simpson?s rule, is _______.
Answer :
Solution :
Area by simpson?s rule
45.A water treatment plant treats 6000 m
3
of water per day. As a part of the treatment
process, discrete particles are required to be settled in a clarifier. A column test indicates that
an overflow rate of 1.5 m per hour would produce the desired removal of particles through
32
settling in the clarifier having a depth of 3.0 m. The volume of the required clarifier, (in m
3
,
round off to 1 decimal place) would be
Answer :
Solution :
Given data:
Flow rate = 6000 m
3
/day
Over flow rate = 1.5 m/hour
= 1.5 ? 24 m/day = 36 m/day
Flow area
= 166.67 m
2
Volume required for clarifier = Flow area ? depth
= 166.67 ? 3 = 500 m
3
46.A flexible pavement has the following class of loads during a particular hour of the day.
i. 80 buses with 2-axles (each axle load of 40 kN);
ii. 160 trucks with 2-axles (front and rear axle loads of 40 kN and 80 kN, respectively)
The equivalent standard axle load repetitions for this vehicle combination as per IRC:37-2012
would be
A. 320
B. 250
C. 240
D. 180
Answer : D
Solution :
33
= 5 + 5 + 10 + 160
= 180
47.Constant head permeability tests were performed on two soil specimens, S1 and SThe
ratio of height of the two specimens (LS1: LS2) is 1.5, the ratio of the diameter of specimens
(DS1:DS2) is 0.5, and the ratio of the constant head (hs1:hs2) applied on the specimens is 2.0. If
the discharge from both the specimens is equal, the ratio of the permeability of the soil
specimens (ks1:ks2) is ________
Answer :
Solution :
For constant head permeability test,
Q ? discharge
L ? length of specimen
a ? area of cross-section of specimen
h ? constant head
Given,
34
48.A long uniformly distributed load of 10 kN/m and a concentrated load of 60 kN are
moving together on the beam ABCD shown in the figure (not drawn to scale). The relative
positions of the two loads are not fixed. The maximum shear force (in kN, round off to the
nearest integer) caused at the internal hinge B due to the two loads is __________
Answer :
Solution :
35
Maximum
49.A square footing of 2m sides rests on the surface of a homogeneous soil bed having the
properties: cohesion c = 24 kPa, angle of internal friction ? = 25?, and unit weight ? = 18
kN/m
3
. Terzaghi?s bearing capacity factor ? = 25? are Nc = 25.1, Nq = 12.7, N? = 9.7, N?c =
14.8, N?q = 5.6, and N?? = 3.The ultimate bearing capacity of the foundation (in kPa, round
off to 2 decimal places) is ______.
Answer :
Solution :
Here, ? < 29
o
Footing rests on the ground
Hence, q = 0
so,
use, accordingly.
50.The dimensions of a soil sampler are given in the table.
36
For this sampler, the outside clearance ratio (in percent, round off to 2 decimal places) is
_________.
Answer :
Solution :
Given:
D4 = 90 mm
D2 = 100 mm
51.A plane frame shown in the figure (not to scale) has linear elastic springs at node H. The
spring constants are kx = ky = 5 ? 10
5
kN/m
3
and k? = 3 ? 10
5
kNm/rad.
For the externally applied moment of 30 kNm at node F, the rotation (in degrees, round off to
3 decimals) observed in the rotational spring at node H is ________
Answer :
37
Solution :
R ? 3 = 30
? R = 10 kN
From right side of FBD
R ? 3 = K? . ?
= 10
?4
rad = 0.0057
= 0.006 degree
52.Chlorine is used as the disinfectant in a municipal water treatment plant. It achieves 50
percent of disinfection efficiency measured in terms of killing the indicator microorganisms
(E-Coli) in 3 minutes. The minimum time required to achieve 99 percent disinfection
efficiency would be
A. 9.93 minutes
B. 11.93 minutes
C. 21.93 minutes
D. 19.93 minutes
Answer : D
Solution :
Disinfection eff.
38
Again,
? t = 19.93 min.
53.A confined aquifer of 15 m constant thickness is sandwiched between two aquicludes as
shown in the figure (not drawn to scale)
The heads indicated by two piezometers P and Q are 55.2 m and 34.1 m, respectively. The
aquifer has a hydraulic conductivity of 80 m/ day and its effective porosity is 0.If the distance
between the piezometers is 2500 m, the time taken by the water to travel through the aquifer
from piezometer location P to Q (in days, round off to 1 decimal place) is ______.
Answer :
Solution :
Given,
39
= 9.259 ? 10
?4
m/s
h = 55.2 ? 34.1 = 21.1 m
L = 2500 m
n = 0.25
B = 15 m
As per Darcy?s law,
V = ki
Seepage velocity
54.For a plane stress problem, the state of stress at a point P is represented by the stress
element as shown in the figure.
40
By how much angle (?) in degrees the stress element should be rotated in order to get the
planes of maximum shear stress?
A. 26.6
B. 48.3
C. 31.7
D. 13.3
Answer : C
Solution :
41
Coordinates of
= (30, 0)
In ?ABC ,
BC = 80 ? 30 = 50 MPa
AB = 25 MPa
Angle to be rotated
55.The inverse of the matix is
42
A.
B.
C.
D.
Answer : B
Solution :
Det. of matrix, |A| = 2 (12 ? 2) ? 3(16 ? 1) + 4(8 ? 3)
= 20 ? 45 + 20
= ?5
(adj A) = (cof A)'
cof of A11 = 12 ? 2 = 10
43
cof of A12 = ?(16 ? 1) = ?15
cof of A13 = 8 ? 3 = 5
cof of A21 = ?(12 ? 8) = ?4
cof of A22 = (8 ? 4) = 4
cof of A23 = ?(4 ? 3) = ?1
cof of A31 = (3 ? 12) = ?9
cof of A32 = ?(2 ? 16) = 14
cof of A33 = (6 ? 12) = ?6
adj A = (cof A)'
56.Two identical pipes (i.e. having the same length, same diameter, and same roughness) are
used to withdraw water from a reservoir. In the first case, they are attached in series and also
discharge freely into the atmosphere. In the second case, they are attached in parallel and
friction factor is same in both the cases, the ratio of the discharge in the parallel arrangement
to that in the series arrangement (round off to 2 decimal places) is _____
Answer :
Solution :
FirstRanker.com - FirstRanker's Choice
2
GATE CE 2019 Set 2: Questions & Solutions
General Aptitude
1.Daytime temperature in Delhi can ______ 40?C
A. Peak
B. reach
C. get
D. stand
Answer : B
Solution :
Daytime temperature in Delhi can reach 40?C
2.The growth rate of ABC Motors in 2017 was the same ________ XYZ Motors in 2016 .
A. As those of
B. As that off
C. As that of
D. As off
Answer : C
Solution :
The growth rate of ABC Motors in 2017 was the same as that of XYZ Motors in 2016.
3.Suresh wanted to lay a new carpet in his new mansion with an area of 70 55 sq. mts.
However an area of 550 sq. mts had to be left out for flower pots. If the cost of carpet is Rs.
50 per sq. mts, how much money (in Rs.) will be spent by Suresh for the carpet now?
A. Rs. 1,65,000
B. Rs. 1,92,500
C. Rs. 1,27,500
D. Rs. 2,75,000
Answer : A
3
Solution :
Area of mansion = 70 ? 55 = 3850 m
2
Area for flower pots = 550 m
2
? Area left for carpet = 3850 ? 550 = 3300m
2
? Cost = 3300 ? 50 = 165000
4.A retaining wall with measurements 30 m ? 12 m ? 6 m was constructed with bricks of
dimensions 8 cm ? 6 cm. If 60% of the wall consists of bricks used for the construction is
___________ lakhs.
A. 45
B. 30
C. 40
D. 75
Answer : A
Solution :
Volume of wall = 30 ? 12 ? 6 = 2160 m
3
= 2160 ? 106 cm
3
Total volume of bricks required = 2160 ? 106 ? 0.6 cm
3
= 1296 ? 106 cm
3
Volume of one brick = 8 ? 6 ? 6 = 288 cm
3
? No. of bricks required
= 4.5 ? 10
6
= 45 lakhs
5.Hima Das was _______ only Indian athlete to win _____________ gold for India.
A. the, many
B. an, the
C. an, a
4
D. the, a
Answer : D
Solution :
Hima Das was the only Indian athlete to win a gold for India.
6.Population of state X increased by x% and the population of state Y increased by y% from
2001 to 2011. Assume that x is greater than y. Let P be the ratio of the population of state X
to state Y in a given year. The percentage increase in P from 2001 to 2011 is_____________
A. x ? y
B.
C.
D.
Answer : C
Solution :
Let population of X is ?A? in 2001
and Population of Y is ?B? in 2001
? Population of A in 2011
& Population of B in 2011
Given,
5
% increase in P
7.The Newspaper report that over 500 hectares of tribal land spread across 28 tribal
settlements in Mohinitampuram forest division have already been ?alienated?. A top forest
official said, ?First the tribals are duped out of their land holdings. Second, the families thus
rendered landless are often forced to encroach further into the forests?.
On the basis of the information available in the paragraph, _______ is/are responsible for
duping the tribals.
A. The newspaper
B. Landless families
C. forest officials
D. it cannot be inferred who
Answer : D
Solution :
?it cannot be inferred who?
From given information, nobody can be held responsible.
8.An oil tank can be filled by pipe X in 5 hours and pipe Y in 4 hours, each pump working on
its own. When the oil tank is full and the drainage hole is open, the oil is drained in 20 hours.
6
If initially the tank was empty and someone started the two pumps together but left the
drainage hole open, how many hours will it tak for the tank to be filled? (Assume that the rate
of drainage is independent of the head)
A. 2.50
B. 1.50
C. 2.00
D. 4.00
Answer : A
Solution :
Pipe X will fill how much in one hour tank
Pipe Y will fill how much in one hour tank
Drainage will drain out how much water in 1 hour tank
? Total tank filled in one hour
tank gets filled in = 1 hour
? Full (i) tank gets filled in
9.Mohan, the manager, wants his four workers to work in pairs. No paper should work for
more than 5 hours. Ram and Johan have worked together for 5 hours. Krishna and Amir have
7
worked as a team for 2 hours. Krishan does not want to work with Ram whom should mohan
allot to work with Johan, if we wants all the workers to continue working?
A. Amir
B. Krishna
C. Ram
D. None of the three
Answer : B
Solution :
Conditions given:
(i) Ram & John have worked for 5 hours.
(ii) Krishna doesn?t want to work with Ram.
(iii) No pair should work beyond 5 hours.
Hence, Krishna should work with John to satisfy the above conditions.
10.?Popular Hindi fiction, despite ? or perhaps because of ? its wide reach, often does not
appear in our cinema. As ideals that viewers are meant to look up to rather than identify with,
Hindi film protagonisits usually read books of apsirational value: textbooks, English books,
or high value literature?.
Which one of the following CANNOT be inferred from the paragraph above?
A. Textbooks, English books or high literature have apsirational value, but not popular Hindi
fiction
B. People do not look up to writers of textbooks, English book or high value literature
C. Though popular hindi fiction was wide readh, it often does not appear in the movies
D. Protagonists in Hindi movies, being ideals for viewers, read only books of aspirational
value.
Answer : B
Solution :
People do not look up to writers of textbooks, English book or high value literature.
8
Civil Engineering
11.What is curl of the vector field 2x
2
yi + 5z
2
j - 4yzk?
A. - 14zi - 2x
2
k
B. 6zi + 4xj - 2x
2
k
C. 6zi + 8xyj + 2x
2
yk
D. -14zi + 6yj + 2x
2
k
Answer : A
Solution :
12.Analysis of a water sample revealed that the sample contains the following species.
9
Concentrations of which of the species will be required to compute alkalinity?
A.
B.
C.
D.
Answer : A
Solution :
H2CO3 and HCO3
-
never come together
13.The value of the function f(x) is given at n distinct values of x and its value is to be
interpolated at the point x
*
using all the n points. The estimate is obtained first by the
Lagrange polynomial, denoted by IL, and then by the Newton polynomial, denoted by IN.
Which one of the following statements is correct?
A. IL is always greater than IN
B. No definite relation exists between IL and IN.
C. IL is always less than IN
D. IL and IN are always equal
Answer : B
Solution :
Lagrange?s form is more efficient when you have to interpolate several data sets on the same
data point.
Newton?s form is more efficient when you have to interpolate data incrementally. So no
relationship between both.
14.If the fineness modulus of a sample of the fine aggregates is 4.3, the mean size of the
particles in the sample is between
10
A. 150 ?m and 300 ?m
B. 2.36 mm and 4.75 mm
C. 300 ?m and 600 ?m
D. 1.18 mm and 2.36 mm
Answer : D
Solution :
150 ?m, 300 ?m, 600 ?m, 1.18 mm,
2.36 mm, 4.75 mm, 10 mm, 20 mm,
40 mm, 80 mm
150 ? 1
300 ? 2
600 ? 3
4.75 - 6
15.The command area of a canal grows only one crop, i.e., wheat. The base period of wheat
is 120 days and its total water requirement, ?, is 40 cm. If the canal discharge is 2 m
3
/s, the
area, in hectares, rounded off to the nearest integer, which could be irrigated (neglecting all
losses) is ______________
Answer :
Solution :
B = 120 days
? = 0.4 m
and ? = 8.64B/D
? D = 2592 ha per (m
3
/s)
? For 2m
3
/sec water, area will be 5184 ha
11
16.The characteristic compressive strength of concrete required in a project is 25 MPa and
standard deviation in the observed compressive strength expected at site is 4 MPa. The
average compressive strength of cubes tested at different water-cement (w/c) ratios using the
same material as is used for the project is given in the table.
The water-cement ratio (in percent, round off to the lower integer) to be used in the mix
is________
Answer :
Solution :
fck = 25 ; ? = 4 MPa
fm = fck + 1.65? = 31.6 MPa
Using interpolation
= 46.7 (Rounded off to the lowest integer).
17.A solid sphere of radius, r, and made of material with density ?s, is moving through the
atmosphere (constant pressure, p) with a velocity, ?. The net force ONLY due to atmospheric
pressure (Fp) acting on the sphere at any time, t, is
A.
B. Zero
C. ?r
2
p
D. 4?r
2
p
Answer : B
Solution :
Force = area ? P
12
Net force will be zero as pressure acts from all sides.
18.An earthen dam of height H is made of cohesive soil whose cohesion and unit weight are c
and ?, respectively. If the factor of safety against cohesion is Fc, the Taylor?s stability
A.
B.
C.
D.
Answer : C
Solution :
Taylor?s stability number,
19.A closed thin walled tube has thickness, t, mean enclosed area within the boundary of the
centrline of tube?s thickness, Am, and shear stress ?. Torsional moment of resistance, T of the
section would be
A.
B.
13
C.
D.
Answer : A
Solution :
20.For a channel section subjected to a downward vertical shear force at its centroid, which
one of the following represents the correct distribution of shear stress in flange and web?
A.
B.
C.
14
D.
Answer : C
Solution :
Standard result
21.The degree of static indeterminancy of the plane frame is shown in the figure is ________
Answer :
Solution :
Ds = 3C ? R'
C = 6
Ds = (3 ? 6 ? 2) ? 1 (due to hinge)
= 15
15
22.Structural failures considered in the mechanistic method of bituminous pavement design
are
A. Shear and slippage
B. Fatique and Rutting
C. Fatique and shear
D. Rutting and shear
Answer : B
Solution :
As per IRC66:2012
23.Which one of the options contains ONLY primary air pollutants?
A. Ozone and peroxyacetyl nitrate
B. Nitrogen oxides and peroxyacetyl nitrate
C. Hydrocarbons and nitrogen oxides
D. Hydrocarbons and ozone
Answer : C
Solution :
Ozone and PAN are secondary air pollutants.
24.The following inequality is true for all x close to 0.
What is the value of
A. 2
B. 1/2
C. 0
16
D. 1
Answer : A
Solution :
It is form
L?s hospital rule (differentiate)
Putting 0 everywhere ? still form.
Differentiating numerator and denominator again,
25.The velocity field in a flow system is given by v = 2i + (x + y)j + (xyz)k. The acceleration
of the fluid at (1, 1, 2) is
A. j + k
B. 2i + 10 k
C. 4j + 10k
D. 4i + 12 k
Answer : C
Solution :
17
and
= 2 + (x + y) + (xyz)(0) + 0
and
= 2(yz) + (x + y)(xz) + (xyz)(xy) + 0
az = 2(1 ? 2) + (1 + 1)(1 ? 2) + (1 ? 1
? 2) (1?1)
= 10k
Therefore,
26.A steel column is restrained against both translation and rotation at one end and is
restrained only against rotation but free to translate at the other end. Theoretical and design
(IS: 800 ? 2007) values, respectively, of effective length factor of the column are
18
A. 1.0 and 1.0
B. 1.2 and 1.0
C. 1.2 and 1.2
D. 1.0 and 1.2
Answer : D
Solution :
As per IS:800-2007
27.Euclindean norm (length) of the vector [4 ?2 ? 6]
T
is
A. ?48
B. ?24
C. ?12
D. ?56
Answer : D
Solution :
The Euclidean norm assigns to each vector the length of its arrow. Because of this,
the Euclidean norm is often known as the magnitude. So,
Length
28.An inflow hydrograph is routed through a reservoir to produce an outflow hydrograph.
The peak flow of the inflow hydrograph is PI and the time of occurrence of the peak is tI. The
peak flow of the outflow hydrograph is P0 and the time of occurance of the peak is t0. Which
one of the following statements is correct?
A. PI < P0 and tI > t0
B. PI > P0 and tI > t0
C. PI < P0 and tI < t0
D. PI > P0 and tI < t0
Answer : D
Solution :
19
Pl > Po ; tl < to
29.Construction of a new building founded on a clayey soil was completed in January In
January 2014, the average consolidation settlement of the foundation in clay was recorded as
10 mm. The ultimate consolidation settlement was estimated in design as 40 mm.
Considering double drainage to occur at the clayey soil site, the expected consolidation
settlement in January 2019 (in mm, round off to the nearest integer) will be _____________
Answer :
Solution :
Ultimate consolidation = 40 mm
Recorded consolidation = 10 mm
? Total recorded consolidation
? 40 ? 0.375
20
30.The notation ?SC? as per Indian standard Soil Classification System refers to
A. Clayey silt
B. Sandy clay
C. Calyey sand
D. Silty clay
Answer : C
Solution :
SC : clayey sand
31.The speed-density relationship in a mid-block section of a highway follows the
Greenshield?s model. If the free flow speed is vf and the jam density is kj, the maximum flow
observed on this ection is
A.
B.
C. fvkj
D.
Answer : D
Solution :
?(1)
21
32.An anisotropic soil deposit has coefficient of permeability in vertical and horizontal
directions as kz and kx, respectively. For constructing a flow net, the horizontal dimension of
the problem?s geometry is transformed by a multiplying factor of
A.
B.
C.
D.
Answer : C
Solution :
Flow net for anisotropic soil.
?(i)
If we transformed geometry in x direction let x cordinate be transformed to the new
coordinate xt by the transformation.
22
?(ii)
From eq. (i) & (ii),
Hence prove
So, multiplied factor
33.The Laplace transform of sinh (at) is
A.
B.
C.
D.
Answer : C
Solution :
Laplace transform of sinh (at) =
23
34.The data from a closed traverse survey PQRS (run in the clockwise direction) are given in
the table
The closing error for the traverse PQRS (in degrees) is________
Answer :
Solution :
n = 4 (number of sides of closed traverse)
(2n ? 4) ? 90? = 360?
so, error in included angle
= (88 + 92 + 94 + 89) ? 360 = +3?
35.A vehicle is moving on a road of grade +4% at a speed of 20 m/s. Consider the coefficient
of rolling friction as 0.46 and acceleration due to gravity as 10 m/s
2
. On applying brakes to
reach a speed of 10 m/s, the required braking distance (in m, round off to nearest integer)
along the horizontal, is ______.
Answer :
Solution :
Given: grade = +4%
V1 = 20 m/sec.
f = 0.46
g = 10 m/sec.
V1 = 10 m/sec.
24
We know,
36.A broad gauge railway line passes through a horizontal curved section (radius = 875 m) of
length 200 m. The allowable speed on this portion is 100 km/h. For calculating the cant,
consider the gauge as centre-to-centre distance between the rail heads, equal to 1750mm, The
maximum permissible cant (in mm, round off to 1 decimal place) with respect to the centreto-
centre distance between the rail heads is ______.
Answer :
Solution :
Given data:
R = 875 mm
Allowable speed = 100 kmph
Gauge length G = 1750 mm
Allowable cant
37.When a specimen of M25 concrete is loaded to a stress level of 12.5 MPa, a strain of 500
? 10
?6
is recorded. If this load is allowed to stand for a long time, the strain increases to 1000
? 10
?6
. In accordance with provisions of IS: 456-2000, considering the long-term effects, the
effective modulus of elasticity of the concrete (in MPa) is ________
Answer :
Solution :
25
Short term strain = 500 ? 10
?6
Long term strain = 1000 ? 10
?6
So, creep coefficient,
? = 1
Long-term effective modulus
= 12500 N/mm
2
= 12500 MPa
or
38.The probability density function of a continuous random variable distributed uniformly
between x and y (for y > x) is
A.
B. x ? y
C. y ? x
D.
Answer : D
Solution :
Probability density function of a uniformly distributed random variable.
26
39.The uniform arrival and uniform service rates observed on an approach road to a
signalized intersection are 20 and 50 vehicles/minutes, respectively. For this signal, the red
time is 30 s, the effective green time is 30 s, and the cycle length is 60s. Assuming that
initially there are no vehicles in the queue, the average delay per vehicle using the approach
road during a cycle length (in s, round off to 2 decimal places) is _______
Answer :
Solution :
Average delay per vehicle
= 12.5 sec
40.A rolled I-section beam is supported on a 75 mm wide bearing plate as shown in the
figure. Thickness of flange and web of the I-section are 20 mm and 8mm, respectively. Root
27
radius of the I-section is 10mm. Assuming: material yield stress,
fy = 250 MPa and partial safety factor for material, ?mo = 1.10
As per IS: 800-2007, the web bearing strength (in kN, round off to 2 decimal places) of the
beam is _______
Answer :
Solution :
Effective area in bearing = [75 + 2.5 (flange thickness + root radius)] ? 8
= [75 + 2.5 (20 + 10)] ? 8
= 1200 mm
2
so, web bearing strength
= 272.73 kN
41.The critical bending compressive stress in the extreme fibre of a structural steel section is
1000 MPa. It is given that the yield strength of the steel is 250 MPa, width of flange is 250
mm and thickness of flange is 15 mm. As per the provisions of IS: 800-2007, the
nondimensional slendeness ratio of the steel crosssection is
28
A. 0.50
B. 2.00
C. 0.25
D. 0.75
Answer : A
Solution :
Non-dimensional slenderness ratio
42.At the foot of a spillyway, water flows at a depth of 23 cm with a velocity of 8.1 m/s, as
shown in the figure.
The flow enters as an M-3 profile in the long wide rectangular channel with bed
slope and Manning?s n = 0.A hydraulic jump is formed at a certain distance from
the foot of the spillway. Assume the acceleration due to gravity, g = 9.81 m/s
2
. Just before the
hydraulic jump, the depth of flow y1 (in m, round off to 2 decimal places) is _________
Answer :
Solution :
Given data:
y = 0.23 m
V = 8.1 m/sec.
Slope,
29
h = 0.015
g = 9.81 m/sec
2
q = yV = 8.1 ? 0.23
= 1.863 m
3
/sec/m
It is given that flow enters as an M-3 profile in the long wide rectangular channel with bed
slope
From manning equation at M3 profile section.
[for wide channel R = y]
The flow profile will follow normal depth (yn) after jump.
For wide rectangular channel,
Here, yn = y 2 = 1.11 m
30
Again,
? y 1 = 0.417 m < y c [supercritical]
43.Consider the reactor shown in the figure. The concentration (in mg/l) of a compound in
the influent and effluent are C0 and C, flow rate through the reactor is Q m
3
/h respectively.
The compound is degraded in the reactor following the first order reactions. The mixing
condition of the reactor Complete Mix Flow Reactor (CMFR) or a plug-flow reactor (PFR).
The length of the reactor can be adjusted in these two mixing conditions to LCMFR and
LPER while keeping the cross-section of the reactor constant. Assuming steady state and for
C/C0 = 0.8, the value of LCMFR/LPER (round off to 2 decimal places) is _______
Answer :
Solution :
A = constant
Q = AL
For plug flow
[ detention time for plug flow reaction]
For completely mix = C =
[ detention time for completely mix reaction]
31
Also,
44.A series of perpendicular offsets taken from a curved boundary wall to a straight survey
line at an interval of 6 m are 1.22, 1.67, 2.04, 2.34, 2.14, 1.87, and 1.15 m. The area (in m2,
round off to 2 decimal places) boundary by the survey line, curved boundary wall, the first
and the last offsets, determined using Simpson?s rule, is _______.
Answer :
Solution :
Area by simpson?s rule
45.A water treatment plant treats 6000 m
3
of water per day. As a part of the treatment
process, discrete particles are required to be settled in a clarifier. A column test indicates that
an overflow rate of 1.5 m per hour would produce the desired removal of particles through
32
settling in the clarifier having a depth of 3.0 m. The volume of the required clarifier, (in m
3
,
round off to 1 decimal place) would be
Answer :
Solution :
Given data:
Flow rate = 6000 m
3
/day
Over flow rate = 1.5 m/hour
= 1.5 ? 24 m/day = 36 m/day
Flow area
= 166.67 m
2
Volume required for clarifier = Flow area ? depth
= 166.67 ? 3 = 500 m
3
46.A flexible pavement has the following class of loads during a particular hour of the day.
i. 80 buses with 2-axles (each axle load of 40 kN);
ii. 160 trucks with 2-axles (front and rear axle loads of 40 kN and 80 kN, respectively)
The equivalent standard axle load repetitions for this vehicle combination as per IRC:37-2012
would be
A. 320
B. 250
C. 240
D. 180
Answer : D
Solution :
33
= 5 + 5 + 10 + 160
= 180
47.Constant head permeability tests were performed on two soil specimens, S1 and SThe
ratio of height of the two specimens (LS1: LS2) is 1.5, the ratio of the diameter of specimens
(DS1:DS2) is 0.5, and the ratio of the constant head (hs1:hs2) applied on the specimens is 2.0. If
the discharge from both the specimens is equal, the ratio of the permeability of the soil
specimens (ks1:ks2) is ________
Answer :
Solution :
For constant head permeability test,
Q ? discharge
L ? length of specimen
a ? area of cross-section of specimen
h ? constant head
Given,
34
48.A long uniformly distributed load of 10 kN/m and a concentrated load of 60 kN are
moving together on the beam ABCD shown in the figure (not drawn to scale). The relative
positions of the two loads are not fixed. The maximum shear force (in kN, round off to the
nearest integer) caused at the internal hinge B due to the two loads is __________
Answer :
Solution :
35
Maximum
49.A square footing of 2m sides rests on the surface of a homogeneous soil bed having the
properties: cohesion c = 24 kPa, angle of internal friction ? = 25?, and unit weight ? = 18
kN/m
3
. Terzaghi?s bearing capacity factor ? = 25? are Nc = 25.1, Nq = 12.7, N? = 9.7, N?c =
14.8, N?q = 5.6, and N?? = 3.The ultimate bearing capacity of the foundation (in kPa, round
off to 2 decimal places) is ______.
Answer :
Solution :
Here, ? < 29
o
Footing rests on the ground
Hence, q = 0
so,
use, accordingly.
50.The dimensions of a soil sampler are given in the table.
36
For this sampler, the outside clearance ratio (in percent, round off to 2 decimal places) is
_________.
Answer :
Solution :
Given:
D4 = 90 mm
D2 = 100 mm
51.A plane frame shown in the figure (not to scale) has linear elastic springs at node H. The
spring constants are kx = ky = 5 ? 10
5
kN/m
3
and k? = 3 ? 10
5
kNm/rad.
For the externally applied moment of 30 kNm at node F, the rotation (in degrees, round off to
3 decimals) observed in the rotational spring at node H is ________
Answer :
37
Solution :
R ? 3 = 30
? R = 10 kN
From right side of FBD
R ? 3 = K? . ?
= 10
?4
rad = 0.0057
= 0.006 degree
52.Chlorine is used as the disinfectant in a municipal water treatment plant. It achieves 50
percent of disinfection efficiency measured in terms of killing the indicator microorganisms
(E-Coli) in 3 minutes. The minimum time required to achieve 99 percent disinfection
efficiency would be
A. 9.93 minutes
B. 11.93 minutes
C. 21.93 minutes
D. 19.93 minutes
Answer : D
Solution :
Disinfection eff.
38
Again,
? t = 19.93 min.
53.A confined aquifer of 15 m constant thickness is sandwiched between two aquicludes as
shown in the figure (not drawn to scale)
The heads indicated by two piezometers P and Q are 55.2 m and 34.1 m, respectively. The
aquifer has a hydraulic conductivity of 80 m/ day and its effective porosity is 0.If the distance
between the piezometers is 2500 m, the time taken by the water to travel through the aquifer
from piezometer location P to Q (in days, round off to 1 decimal place) is ______.
Answer :
Solution :
Given,
39
= 9.259 ? 10
?4
m/s
h = 55.2 ? 34.1 = 21.1 m
L = 2500 m
n = 0.25
B = 15 m
As per Darcy?s law,
V = ki
Seepage velocity
54.For a plane stress problem, the state of stress at a point P is represented by the stress
element as shown in the figure.
40
By how much angle (?) in degrees the stress element should be rotated in order to get the
planes of maximum shear stress?
A. 26.6
B. 48.3
C. 31.7
D. 13.3
Answer : C
Solution :
41
Coordinates of
= (30, 0)
In ?ABC ,
BC = 80 ? 30 = 50 MPa
AB = 25 MPa
Angle to be rotated
55.The inverse of the matix is
42
A.
B.
C.
D.
Answer : B
Solution :
Det. of matrix, |A| = 2 (12 ? 2) ? 3(16 ? 1) + 4(8 ? 3)
= 20 ? 45 + 20
= ?5
(adj A) = (cof A)'
cof of A11 = 12 ? 2 = 10
43
cof of A12 = ?(16 ? 1) = ?15
cof of A13 = 8 ? 3 = 5
cof of A21 = ?(12 ? 8) = ?4
cof of A22 = (8 ? 4) = 4
cof of A23 = ?(4 ? 3) = ?1
cof of A31 = (3 ? 12) = ?9
cof of A32 = ?(2 ? 16) = 14
cof of A33 = (6 ? 12) = ?6
adj A = (cof A)'
56.Two identical pipes (i.e. having the same length, same diameter, and same roughness) are
used to withdraw water from a reservoir. In the first case, they are attached in series and also
discharge freely into the atmosphere. In the second case, they are attached in parallel and
friction factor is same in both the cases, the ratio of the discharge in the parallel arrangement
to that in the series arrangement (round off to 2 decimal places) is _____
Answer :
Solution :
44
Case (1): Series connection,
then ?(i)
Case (ii) : parallel connection
then, ...(ii)
then from equation (i) and (ii)
57.A camera with a focal length of 20 cm fitted in an aircraft is used for taking vertical aerial
photographs of a terrain. The average elevation of the terrain is 1200 m above mean sea level
(MSL). What is the height above MSL at which an aircraft must fly in order to get the aerial
photographs at a scale of 1:8000?
A. 3200 m
B. 2800 m
FirstRanker.com - FirstRanker's Choice
2
GATE CE 2019 Set 2: Questions & Solutions
General Aptitude
1.Daytime temperature in Delhi can ______ 40?C
A. Peak
B. reach
C. get
D. stand
Answer : B
Solution :
Daytime temperature in Delhi can reach 40?C
2.The growth rate of ABC Motors in 2017 was the same ________ XYZ Motors in 2016 .
A. As those of
B. As that off
C. As that of
D. As off
Answer : C
Solution :
The growth rate of ABC Motors in 2017 was the same as that of XYZ Motors in 2016.
3.Suresh wanted to lay a new carpet in his new mansion with an area of 70 55 sq. mts.
However an area of 550 sq. mts had to be left out for flower pots. If the cost of carpet is Rs.
50 per sq. mts, how much money (in Rs.) will be spent by Suresh for the carpet now?
A. Rs. 1,65,000
B. Rs. 1,92,500
C. Rs. 1,27,500
D. Rs. 2,75,000
Answer : A
3
Solution :
Area of mansion = 70 ? 55 = 3850 m
2
Area for flower pots = 550 m
2
? Area left for carpet = 3850 ? 550 = 3300m
2
? Cost = 3300 ? 50 = 165000
4.A retaining wall with measurements 30 m ? 12 m ? 6 m was constructed with bricks of
dimensions 8 cm ? 6 cm. If 60% of the wall consists of bricks used for the construction is
___________ lakhs.
A. 45
B. 30
C. 40
D. 75
Answer : A
Solution :
Volume of wall = 30 ? 12 ? 6 = 2160 m
3
= 2160 ? 106 cm
3
Total volume of bricks required = 2160 ? 106 ? 0.6 cm
3
= 1296 ? 106 cm
3
Volume of one brick = 8 ? 6 ? 6 = 288 cm
3
? No. of bricks required
= 4.5 ? 10
6
= 45 lakhs
5.Hima Das was _______ only Indian athlete to win _____________ gold for India.
A. the, many
B. an, the
C. an, a
4
D. the, a
Answer : D
Solution :
Hima Das was the only Indian athlete to win a gold for India.
6.Population of state X increased by x% and the population of state Y increased by y% from
2001 to 2011. Assume that x is greater than y. Let P be the ratio of the population of state X
to state Y in a given year. The percentage increase in P from 2001 to 2011 is_____________
A. x ? y
B.
C.
D.
Answer : C
Solution :
Let population of X is ?A? in 2001
and Population of Y is ?B? in 2001
? Population of A in 2011
& Population of B in 2011
Given,
5
% increase in P
7.The Newspaper report that over 500 hectares of tribal land spread across 28 tribal
settlements in Mohinitampuram forest division have already been ?alienated?. A top forest
official said, ?First the tribals are duped out of their land holdings. Second, the families thus
rendered landless are often forced to encroach further into the forests?.
On the basis of the information available in the paragraph, _______ is/are responsible for
duping the tribals.
A. The newspaper
B. Landless families
C. forest officials
D. it cannot be inferred who
Answer : D
Solution :
?it cannot be inferred who?
From given information, nobody can be held responsible.
8.An oil tank can be filled by pipe X in 5 hours and pipe Y in 4 hours, each pump working on
its own. When the oil tank is full and the drainage hole is open, the oil is drained in 20 hours.
6
If initially the tank was empty and someone started the two pumps together but left the
drainage hole open, how many hours will it tak for the tank to be filled? (Assume that the rate
of drainage is independent of the head)
A. 2.50
B. 1.50
C. 2.00
D. 4.00
Answer : A
Solution :
Pipe X will fill how much in one hour tank
Pipe Y will fill how much in one hour tank
Drainage will drain out how much water in 1 hour tank
? Total tank filled in one hour
tank gets filled in = 1 hour
? Full (i) tank gets filled in
9.Mohan, the manager, wants his four workers to work in pairs. No paper should work for
more than 5 hours. Ram and Johan have worked together for 5 hours. Krishna and Amir have
7
worked as a team for 2 hours. Krishan does not want to work with Ram whom should mohan
allot to work with Johan, if we wants all the workers to continue working?
A. Amir
B. Krishna
C. Ram
D. None of the three
Answer : B
Solution :
Conditions given:
(i) Ram & John have worked for 5 hours.
(ii) Krishna doesn?t want to work with Ram.
(iii) No pair should work beyond 5 hours.
Hence, Krishna should work with John to satisfy the above conditions.
10.?Popular Hindi fiction, despite ? or perhaps because of ? its wide reach, often does not
appear in our cinema. As ideals that viewers are meant to look up to rather than identify with,
Hindi film protagonisits usually read books of apsirational value: textbooks, English books,
or high value literature?.
Which one of the following CANNOT be inferred from the paragraph above?
A. Textbooks, English books or high literature have apsirational value, but not popular Hindi
fiction
B. People do not look up to writers of textbooks, English book or high value literature
C. Though popular hindi fiction was wide readh, it often does not appear in the movies
D. Protagonists in Hindi movies, being ideals for viewers, read only books of aspirational
value.
Answer : B
Solution :
People do not look up to writers of textbooks, English book or high value literature.
8
Civil Engineering
11.What is curl of the vector field 2x
2
yi + 5z
2
j - 4yzk?
A. - 14zi - 2x
2
k
B. 6zi + 4xj - 2x
2
k
C. 6zi + 8xyj + 2x
2
yk
D. -14zi + 6yj + 2x
2
k
Answer : A
Solution :
12.Analysis of a water sample revealed that the sample contains the following species.
9
Concentrations of which of the species will be required to compute alkalinity?
A.
B.
C.
D.
Answer : A
Solution :
H2CO3 and HCO3
-
never come together
13.The value of the function f(x) is given at n distinct values of x and its value is to be
interpolated at the point x
*
using all the n points. The estimate is obtained first by the
Lagrange polynomial, denoted by IL, and then by the Newton polynomial, denoted by IN.
Which one of the following statements is correct?
A. IL is always greater than IN
B. No definite relation exists between IL and IN.
C. IL is always less than IN
D. IL and IN are always equal
Answer : B
Solution :
Lagrange?s form is more efficient when you have to interpolate several data sets on the same
data point.
Newton?s form is more efficient when you have to interpolate data incrementally. So no
relationship between both.
14.If the fineness modulus of a sample of the fine aggregates is 4.3, the mean size of the
particles in the sample is between
10
A. 150 ?m and 300 ?m
B. 2.36 mm and 4.75 mm
C. 300 ?m and 600 ?m
D. 1.18 mm and 2.36 mm
Answer : D
Solution :
150 ?m, 300 ?m, 600 ?m, 1.18 mm,
2.36 mm, 4.75 mm, 10 mm, 20 mm,
40 mm, 80 mm
150 ? 1
300 ? 2
600 ? 3
4.75 - 6
15.The command area of a canal grows only one crop, i.e., wheat. The base period of wheat
is 120 days and its total water requirement, ?, is 40 cm. If the canal discharge is 2 m
3
/s, the
area, in hectares, rounded off to the nearest integer, which could be irrigated (neglecting all
losses) is ______________
Answer :
Solution :
B = 120 days
? = 0.4 m
and ? = 8.64B/D
? D = 2592 ha per (m
3
/s)
? For 2m
3
/sec water, area will be 5184 ha
11
16.The characteristic compressive strength of concrete required in a project is 25 MPa and
standard deviation in the observed compressive strength expected at site is 4 MPa. The
average compressive strength of cubes tested at different water-cement (w/c) ratios using the
same material as is used for the project is given in the table.
The water-cement ratio (in percent, round off to the lower integer) to be used in the mix
is________
Answer :
Solution :
fck = 25 ; ? = 4 MPa
fm = fck + 1.65? = 31.6 MPa
Using interpolation
= 46.7 (Rounded off to the lowest integer).
17.A solid sphere of radius, r, and made of material with density ?s, is moving through the
atmosphere (constant pressure, p) with a velocity, ?. The net force ONLY due to atmospheric
pressure (Fp) acting on the sphere at any time, t, is
A.
B. Zero
C. ?r
2
p
D. 4?r
2
p
Answer : B
Solution :
Force = area ? P
12
Net force will be zero as pressure acts from all sides.
18.An earthen dam of height H is made of cohesive soil whose cohesion and unit weight are c
and ?, respectively. If the factor of safety against cohesion is Fc, the Taylor?s stability
A.
B.
C.
D.
Answer : C
Solution :
Taylor?s stability number,
19.A closed thin walled tube has thickness, t, mean enclosed area within the boundary of the
centrline of tube?s thickness, Am, and shear stress ?. Torsional moment of resistance, T of the
section would be
A.
B.
13
C.
D.
Answer : A
Solution :
20.For a channel section subjected to a downward vertical shear force at its centroid, which
one of the following represents the correct distribution of shear stress in flange and web?
A.
B.
C.
14
D.
Answer : C
Solution :
Standard result
21.The degree of static indeterminancy of the plane frame is shown in the figure is ________
Answer :
Solution :
Ds = 3C ? R'
C = 6
Ds = (3 ? 6 ? 2) ? 1 (due to hinge)
= 15
15
22.Structural failures considered in the mechanistic method of bituminous pavement design
are
A. Shear and slippage
B. Fatique and Rutting
C. Fatique and shear
D. Rutting and shear
Answer : B
Solution :
As per IRC66:2012
23.Which one of the options contains ONLY primary air pollutants?
A. Ozone and peroxyacetyl nitrate
B. Nitrogen oxides and peroxyacetyl nitrate
C. Hydrocarbons and nitrogen oxides
D. Hydrocarbons and ozone
Answer : C
Solution :
Ozone and PAN are secondary air pollutants.
24.The following inequality is true for all x close to 0.
What is the value of
A. 2
B. 1/2
C. 0
16
D. 1
Answer : A
Solution :
It is form
L?s hospital rule (differentiate)
Putting 0 everywhere ? still form.
Differentiating numerator and denominator again,
25.The velocity field in a flow system is given by v = 2i + (x + y)j + (xyz)k. The acceleration
of the fluid at (1, 1, 2) is
A. j + k
B. 2i + 10 k
C. 4j + 10k
D. 4i + 12 k
Answer : C
Solution :
17
and
= 2 + (x + y) + (xyz)(0) + 0
and
= 2(yz) + (x + y)(xz) + (xyz)(xy) + 0
az = 2(1 ? 2) + (1 + 1)(1 ? 2) + (1 ? 1
? 2) (1?1)
= 10k
Therefore,
26.A steel column is restrained against both translation and rotation at one end and is
restrained only against rotation but free to translate at the other end. Theoretical and design
(IS: 800 ? 2007) values, respectively, of effective length factor of the column are
18
A. 1.0 and 1.0
B. 1.2 and 1.0
C. 1.2 and 1.2
D. 1.0 and 1.2
Answer : D
Solution :
As per IS:800-2007
27.Euclindean norm (length) of the vector [4 ?2 ? 6]
T
is
A. ?48
B. ?24
C. ?12
D. ?56
Answer : D
Solution :
The Euclidean norm assigns to each vector the length of its arrow. Because of this,
the Euclidean norm is often known as the magnitude. So,
Length
28.An inflow hydrograph is routed through a reservoir to produce an outflow hydrograph.
The peak flow of the inflow hydrograph is PI and the time of occurrence of the peak is tI. The
peak flow of the outflow hydrograph is P0 and the time of occurance of the peak is t0. Which
one of the following statements is correct?
A. PI < P0 and tI > t0
B. PI > P0 and tI > t0
C. PI < P0 and tI < t0
D. PI > P0 and tI < t0
Answer : D
Solution :
19
Pl > Po ; tl < to
29.Construction of a new building founded on a clayey soil was completed in January In
January 2014, the average consolidation settlement of the foundation in clay was recorded as
10 mm. The ultimate consolidation settlement was estimated in design as 40 mm.
Considering double drainage to occur at the clayey soil site, the expected consolidation
settlement in January 2019 (in mm, round off to the nearest integer) will be _____________
Answer :
Solution :
Ultimate consolidation = 40 mm
Recorded consolidation = 10 mm
? Total recorded consolidation
? 40 ? 0.375
20
30.The notation ?SC? as per Indian standard Soil Classification System refers to
A. Clayey silt
B. Sandy clay
C. Calyey sand
D. Silty clay
Answer : C
Solution :
SC : clayey sand
31.The speed-density relationship in a mid-block section of a highway follows the
Greenshield?s model. If the free flow speed is vf and the jam density is kj, the maximum flow
observed on this ection is
A.
B.
C. fvkj
D.
Answer : D
Solution :
?(1)
21
32.An anisotropic soil deposit has coefficient of permeability in vertical and horizontal
directions as kz and kx, respectively. For constructing a flow net, the horizontal dimension of
the problem?s geometry is transformed by a multiplying factor of
A.
B.
C.
D.
Answer : C
Solution :
Flow net for anisotropic soil.
?(i)
If we transformed geometry in x direction let x cordinate be transformed to the new
coordinate xt by the transformation.
22
?(ii)
From eq. (i) & (ii),
Hence prove
So, multiplied factor
33.The Laplace transform of sinh (at) is
A.
B.
C.
D.
Answer : C
Solution :
Laplace transform of sinh (at) =
23
34.The data from a closed traverse survey PQRS (run in the clockwise direction) are given in
the table
The closing error for the traverse PQRS (in degrees) is________
Answer :
Solution :
n = 4 (number of sides of closed traverse)
(2n ? 4) ? 90? = 360?
so, error in included angle
= (88 + 92 + 94 + 89) ? 360 = +3?
35.A vehicle is moving on a road of grade +4% at a speed of 20 m/s. Consider the coefficient
of rolling friction as 0.46 and acceleration due to gravity as 10 m/s
2
. On applying brakes to
reach a speed of 10 m/s, the required braking distance (in m, round off to nearest integer)
along the horizontal, is ______.
Answer :
Solution :
Given: grade = +4%
V1 = 20 m/sec.
f = 0.46
g = 10 m/sec.
V1 = 10 m/sec.
24
We know,
36.A broad gauge railway line passes through a horizontal curved section (radius = 875 m) of
length 200 m. The allowable speed on this portion is 100 km/h. For calculating the cant,
consider the gauge as centre-to-centre distance between the rail heads, equal to 1750mm, The
maximum permissible cant (in mm, round off to 1 decimal place) with respect to the centreto-
centre distance between the rail heads is ______.
Answer :
Solution :
Given data:
R = 875 mm
Allowable speed = 100 kmph
Gauge length G = 1750 mm
Allowable cant
37.When a specimen of M25 concrete is loaded to a stress level of 12.5 MPa, a strain of 500
? 10
?6
is recorded. If this load is allowed to stand for a long time, the strain increases to 1000
? 10
?6
. In accordance with provisions of IS: 456-2000, considering the long-term effects, the
effective modulus of elasticity of the concrete (in MPa) is ________
Answer :
Solution :
25
Short term strain = 500 ? 10
?6
Long term strain = 1000 ? 10
?6
So, creep coefficient,
? = 1
Long-term effective modulus
= 12500 N/mm
2
= 12500 MPa
or
38.The probability density function of a continuous random variable distributed uniformly
between x and y (for y > x) is
A.
B. x ? y
C. y ? x
D.
Answer : D
Solution :
Probability density function of a uniformly distributed random variable.
26
39.The uniform arrival and uniform service rates observed on an approach road to a
signalized intersection are 20 and 50 vehicles/minutes, respectively. For this signal, the red
time is 30 s, the effective green time is 30 s, and the cycle length is 60s. Assuming that
initially there are no vehicles in the queue, the average delay per vehicle using the approach
road during a cycle length (in s, round off to 2 decimal places) is _______
Answer :
Solution :
Average delay per vehicle
= 12.5 sec
40.A rolled I-section beam is supported on a 75 mm wide bearing plate as shown in the
figure. Thickness of flange and web of the I-section are 20 mm and 8mm, respectively. Root
27
radius of the I-section is 10mm. Assuming: material yield stress,
fy = 250 MPa and partial safety factor for material, ?mo = 1.10
As per IS: 800-2007, the web bearing strength (in kN, round off to 2 decimal places) of the
beam is _______
Answer :
Solution :
Effective area in bearing = [75 + 2.5 (flange thickness + root radius)] ? 8
= [75 + 2.5 (20 + 10)] ? 8
= 1200 mm
2
so, web bearing strength
= 272.73 kN
41.The critical bending compressive stress in the extreme fibre of a structural steel section is
1000 MPa. It is given that the yield strength of the steel is 250 MPa, width of flange is 250
mm and thickness of flange is 15 mm. As per the provisions of IS: 800-2007, the
nondimensional slendeness ratio of the steel crosssection is
28
A. 0.50
B. 2.00
C. 0.25
D. 0.75
Answer : A
Solution :
Non-dimensional slenderness ratio
42.At the foot of a spillyway, water flows at a depth of 23 cm with a velocity of 8.1 m/s, as
shown in the figure.
The flow enters as an M-3 profile in the long wide rectangular channel with bed
slope and Manning?s n = 0.A hydraulic jump is formed at a certain distance from
the foot of the spillway. Assume the acceleration due to gravity, g = 9.81 m/s
2
. Just before the
hydraulic jump, the depth of flow y1 (in m, round off to 2 decimal places) is _________
Answer :
Solution :
Given data:
y = 0.23 m
V = 8.1 m/sec.
Slope,
29
h = 0.015
g = 9.81 m/sec
2
q = yV = 8.1 ? 0.23
= 1.863 m
3
/sec/m
It is given that flow enters as an M-3 profile in the long wide rectangular channel with bed
slope
From manning equation at M3 profile section.
[for wide channel R = y]
The flow profile will follow normal depth (yn) after jump.
For wide rectangular channel,
Here, yn = y 2 = 1.11 m
30
Again,
? y 1 = 0.417 m < y c [supercritical]
43.Consider the reactor shown in the figure. The concentration (in mg/l) of a compound in
the influent and effluent are C0 and C, flow rate through the reactor is Q m
3
/h respectively.
The compound is degraded in the reactor following the first order reactions. The mixing
condition of the reactor Complete Mix Flow Reactor (CMFR) or a plug-flow reactor (PFR).
The length of the reactor can be adjusted in these two mixing conditions to LCMFR and
LPER while keeping the cross-section of the reactor constant. Assuming steady state and for
C/C0 = 0.8, the value of LCMFR/LPER (round off to 2 decimal places) is _______
Answer :
Solution :
A = constant
Q = AL
For plug flow
[ detention time for plug flow reaction]
For completely mix = C =
[ detention time for completely mix reaction]
31
Also,
44.A series of perpendicular offsets taken from a curved boundary wall to a straight survey
line at an interval of 6 m are 1.22, 1.67, 2.04, 2.34, 2.14, 1.87, and 1.15 m. The area (in m2,
round off to 2 decimal places) boundary by the survey line, curved boundary wall, the first
and the last offsets, determined using Simpson?s rule, is _______.
Answer :
Solution :
Area by simpson?s rule
45.A water treatment plant treats 6000 m
3
of water per day. As a part of the treatment
process, discrete particles are required to be settled in a clarifier. A column test indicates that
an overflow rate of 1.5 m per hour would produce the desired removal of particles through
32
settling in the clarifier having a depth of 3.0 m. The volume of the required clarifier, (in m
3
,
round off to 1 decimal place) would be
Answer :
Solution :
Given data:
Flow rate = 6000 m
3
/day
Over flow rate = 1.5 m/hour
= 1.5 ? 24 m/day = 36 m/day
Flow area
= 166.67 m
2
Volume required for clarifier = Flow area ? depth
= 166.67 ? 3 = 500 m
3
46.A flexible pavement has the following class of loads during a particular hour of the day.
i. 80 buses with 2-axles (each axle load of 40 kN);
ii. 160 trucks with 2-axles (front and rear axle loads of 40 kN and 80 kN, respectively)
The equivalent standard axle load repetitions for this vehicle combination as per IRC:37-2012
would be
A. 320
B. 250
C. 240
D. 180
Answer : D
Solution :
33
= 5 + 5 + 10 + 160
= 180
47.Constant head permeability tests were performed on two soil specimens, S1 and SThe
ratio of height of the two specimens (LS1: LS2) is 1.5, the ratio of the diameter of specimens
(DS1:DS2) is 0.5, and the ratio of the constant head (hs1:hs2) applied on the specimens is 2.0. If
the discharge from both the specimens is equal, the ratio of the permeability of the soil
specimens (ks1:ks2) is ________
Answer :
Solution :
For constant head permeability test,
Q ? discharge
L ? length of specimen
a ? area of cross-section of specimen
h ? constant head
Given,
34
48.A long uniformly distributed load of 10 kN/m and a concentrated load of 60 kN are
moving together on the beam ABCD shown in the figure (not drawn to scale). The relative
positions of the two loads are not fixed. The maximum shear force (in kN, round off to the
nearest integer) caused at the internal hinge B due to the two loads is __________
Answer :
Solution :
35
Maximum
49.A square footing of 2m sides rests on the surface of a homogeneous soil bed having the
properties: cohesion c = 24 kPa, angle of internal friction ? = 25?, and unit weight ? = 18
kN/m
3
. Terzaghi?s bearing capacity factor ? = 25? are Nc = 25.1, Nq = 12.7, N? = 9.7, N?c =
14.8, N?q = 5.6, and N?? = 3.The ultimate bearing capacity of the foundation (in kPa, round
off to 2 decimal places) is ______.
Answer :
Solution :
Here, ? < 29
o
Footing rests on the ground
Hence, q = 0
so,
use, accordingly.
50.The dimensions of a soil sampler are given in the table.
36
For this sampler, the outside clearance ratio (in percent, round off to 2 decimal places) is
_________.
Answer :
Solution :
Given:
D4 = 90 mm
D2 = 100 mm
51.A plane frame shown in the figure (not to scale) has linear elastic springs at node H. The
spring constants are kx = ky = 5 ? 10
5
kN/m
3
and k? = 3 ? 10
5
kNm/rad.
For the externally applied moment of 30 kNm at node F, the rotation (in degrees, round off to
3 decimals) observed in the rotational spring at node H is ________
Answer :
37
Solution :
R ? 3 = 30
? R = 10 kN
From right side of FBD
R ? 3 = K? . ?
= 10
?4
rad = 0.0057
= 0.006 degree
52.Chlorine is used as the disinfectant in a municipal water treatment plant. It achieves 50
percent of disinfection efficiency measured in terms of killing the indicator microorganisms
(E-Coli) in 3 minutes. The minimum time required to achieve 99 percent disinfection
efficiency would be
A. 9.93 minutes
B. 11.93 minutes
C. 21.93 minutes
D. 19.93 minutes
Answer : D
Solution :
Disinfection eff.
38
Again,
? t = 19.93 min.
53.A confined aquifer of 15 m constant thickness is sandwiched between two aquicludes as
shown in the figure (not drawn to scale)
The heads indicated by two piezometers P and Q are 55.2 m and 34.1 m, respectively. The
aquifer has a hydraulic conductivity of 80 m/ day and its effective porosity is 0.If the distance
between the piezometers is 2500 m, the time taken by the water to travel through the aquifer
from piezometer location P to Q (in days, round off to 1 decimal place) is ______.
Answer :
Solution :
Given,
39
= 9.259 ? 10
?4
m/s
h = 55.2 ? 34.1 = 21.1 m
L = 2500 m
n = 0.25
B = 15 m
As per Darcy?s law,
V = ki
Seepage velocity
54.For a plane stress problem, the state of stress at a point P is represented by the stress
element as shown in the figure.
40
By how much angle (?) in degrees the stress element should be rotated in order to get the
planes of maximum shear stress?
A. 26.6
B. 48.3
C. 31.7
D. 13.3
Answer : C
Solution :
41
Coordinates of
= (30, 0)
In ?ABC ,
BC = 80 ? 30 = 50 MPa
AB = 25 MPa
Angle to be rotated
55.The inverse of the matix is
42
A.
B.
C.
D.
Answer : B
Solution :
Det. of matrix, |A| = 2 (12 ? 2) ? 3(16 ? 1) + 4(8 ? 3)
= 20 ? 45 + 20
= ?5
(adj A) = (cof A)'
cof of A11 = 12 ? 2 = 10
43
cof of A12 = ?(16 ? 1) = ?15
cof of A13 = 8 ? 3 = 5
cof of A21 = ?(12 ? 8) = ?4
cof of A22 = (8 ? 4) = 4
cof of A23 = ?(4 ? 3) = ?1
cof of A31 = (3 ? 12) = ?9
cof of A32 = ?(2 ? 16) = 14
cof of A33 = (6 ? 12) = ?6
adj A = (cof A)'
56.Two identical pipes (i.e. having the same length, same diameter, and same roughness) are
used to withdraw water from a reservoir. In the first case, they are attached in series and also
discharge freely into the atmosphere. In the second case, they are attached in parallel and
friction factor is same in both the cases, the ratio of the discharge in the parallel arrangement
to that in the series arrangement (round off to 2 decimal places) is _____
Answer :
Solution :
44
Case (1): Series connection,
then ?(i)
Case (ii) : parallel connection
then, ...(ii)
then from equation (i) and (ii)
57.A camera with a focal length of 20 cm fitted in an aircraft is used for taking vertical aerial
photographs of a terrain. The average elevation of the terrain is 1200 m above mean sea level
(MSL). What is the height above MSL at which an aircraft must fly in order to get the aerial
photographs at a scale of 1:8000?
A. 3200 m
B. 2800 m
45
C. 2600 m
D. 3000 m
Answer : B
Solution :
Given that
f = 0.2 m
h = 1200 m
then,
58.Raw municipal solid waste (MSW) collected from a city contains 70% decomposable
material that can be converted to methane. The water content of the decomposable material is
35%. An elemental anlysis of the decomposable material yields the following mass percent.
C : H : O: N : other = 44 : 6 : 43 : 0.8 : 6.2
The methane production of the decomposable material is governed by the following
stoichiometric relation
CaHbOcNd + nH2O ? mCH4 + sCO2 + dNH3
Given atomic weights: C = 12, H = 1, O = 16, N = The mass of methane produced (in grams,
round off to 1 decimal place) per kg of raw MSW will be _______
Answer :
Solution :
For the MSW, the phase diagram is as follows
FirstRanker.com - FirstRanker's Choice
2
GATE CE 2019 Set 2: Questions & Solutions
General Aptitude
1.Daytime temperature in Delhi can ______ 40?C
A. Peak
B. reach
C. get
D. stand
Answer : B
Solution :
Daytime temperature in Delhi can reach 40?C
2.The growth rate of ABC Motors in 2017 was the same ________ XYZ Motors in 2016 .
A. As those of
B. As that off
C. As that of
D. As off
Answer : C
Solution :
The growth rate of ABC Motors in 2017 was the same as that of XYZ Motors in 2016.
3.Suresh wanted to lay a new carpet in his new mansion with an area of 70 55 sq. mts.
However an area of 550 sq. mts had to be left out for flower pots. If the cost of carpet is Rs.
50 per sq. mts, how much money (in Rs.) will be spent by Suresh for the carpet now?
A. Rs. 1,65,000
B. Rs. 1,92,500
C. Rs. 1,27,500
D. Rs. 2,75,000
Answer : A
3
Solution :
Area of mansion = 70 ? 55 = 3850 m
2
Area for flower pots = 550 m
2
? Area left for carpet = 3850 ? 550 = 3300m
2
? Cost = 3300 ? 50 = 165000
4.A retaining wall with measurements 30 m ? 12 m ? 6 m was constructed with bricks of
dimensions 8 cm ? 6 cm. If 60% of the wall consists of bricks used for the construction is
___________ lakhs.
A. 45
B. 30
C. 40
D. 75
Answer : A
Solution :
Volume of wall = 30 ? 12 ? 6 = 2160 m
3
= 2160 ? 106 cm
3
Total volume of bricks required = 2160 ? 106 ? 0.6 cm
3
= 1296 ? 106 cm
3
Volume of one brick = 8 ? 6 ? 6 = 288 cm
3
? No. of bricks required
= 4.5 ? 10
6
= 45 lakhs
5.Hima Das was _______ only Indian athlete to win _____________ gold for India.
A. the, many
B. an, the
C. an, a
4
D. the, a
Answer : D
Solution :
Hima Das was the only Indian athlete to win a gold for India.
6.Population of state X increased by x% and the population of state Y increased by y% from
2001 to 2011. Assume that x is greater than y. Let P be the ratio of the population of state X
to state Y in a given year. The percentage increase in P from 2001 to 2011 is_____________
A. x ? y
B.
C.
D.
Answer : C
Solution :
Let population of X is ?A? in 2001
and Population of Y is ?B? in 2001
? Population of A in 2011
& Population of B in 2011
Given,
5
% increase in P
7.The Newspaper report that over 500 hectares of tribal land spread across 28 tribal
settlements in Mohinitampuram forest division have already been ?alienated?. A top forest
official said, ?First the tribals are duped out of their land holdings. Second, the families thus
rendered landless are often forced to encroach further into the forests?.
On the basis of the information available in the paragraph, _______ is/are responsible for
duping the tribals.
A. The newspaper
B. Landless families
C. forest officials
D. it cannot be inferred who
Answer : D
Solution :
?it cannot be inferred who?
From given information, nobody can be held responsible.
8.An oil tank can be filled by pipe X in 5 hours and pipe Y in 4 hours, each pump working on
its own. When the oil tank is full and the drainage hole is open, the oil is drained in 20 hours.
6
If initially the tank was empty and someone started the two pumps together but left the
drainage hole open, how many hours will it tak for the tank to be filled? (Assume that the rate
of drainage is independent of the head)
A. 2.50
B. 1.50
C. 2.00
D. 4.00
Answer : A
Solution :
Pipe X will fill how much in one hour tank
Pipe Y will fill how much in one hour tank
Drainage will drain out how much water in 1 hour tank
? Total tank filled in one hour
tank gets filled in = 1 hour
? Full (i) tank gets filled in
9.Mohan, the manager, wants his four workers to work in pairs. No paper should work for
more than 5 hours. Ram and Johan have worked together for 5 hours. Krishna and Amir have
7
worked as a team for 2 hours. Krishan does not want to work with Ram whom should mohan
allot to work with Johan, if we wants all the workers to continue working?
A. Amir
B. Krishna
C. Ram
D. None of the three
Answer : B
Solution :
Conditions given:
(i) Ram & John have worked for 5 hours.
(ii) Krishna doesn?t want to work with Ram.
(iii) No pair should work beyond 5 hours.
Hence, Krishna should work with John to satisfy the above conditions.
10.?Popular Hindi fiction, despite ? or perhaps because of ? its wide reach, often does not
appear in our cinema. As ideals that viewers are meant to look up to rather than identify with,
Hindi film protagonisits usually read books of apsirational value: textbooks, English books,
or high value literature?.
Which one of the following CANNOT be inferred from the paragraph above?
A. Textbooks, English books or high literature have apsirational value, but not popular Hindi
fiction
B. People do not look up to writers of textbooks, English book or high value literature
C. Though popular hindi fiction was wide readh, it often does not appear in the movies
D. Protagonists in Hindi movies, being ideals for viewers, read only books of aspirational
value.
Answer : B
Solution :
People do not look up to writers of textbooks, English book or high value literature.
8
Civil Engineering
11.What is curl of the vector field 2x
2
yi + 5z
2
j - 4yzk?
A. - 14zi - 2x
2
k
B. 6zi + 4xj - 2x
2
k
C. 6zi + 8xyj + 2x
2
yk
D. -14zi + 6yj + 2x
2
k
Answer : A
Solution :
12.Analysis of a water sample revealed that the sample contains the following species.
9
Concentrations of which of the species will be required to compute alkalinity?
A.
B.
C.
D.
Answer : A
Solution :
H2CO3 and HCO3
-
never come together
13.The value of the function f(x) is given at n distinct values of x and its value is to be
interpolated at the point x
*
using all the n points. The estimate is obtained first by the
Lagrange polynomial, denoted by IL, and then by the Newton polynomial, denoted by IN.
Which one of the following statements is correct?
A. IL is always greater than IN
B. No definite relation exists between IL and IN.
C. IL is always less than IN
D. IL and IN are always equal
Answer : B
Solution :
Lagrange?s form is more efficient when you have to interpolate several data sets on the same
data point.
Newton?s form is more efficient when you have to interpolate data incrementally. So no
relationship between both.
14.If the fineness modulus of a sample of the fine aggregates is 4.3, the mean size of the
particles in the sample is between
10
A. 150 ?m and 300 ?m
B. 2.36 mm and 4.75 mm
C. 300 ?m and 600 ?m
D. 1.18 mm and 2.36 mm
Answer : D
Solution :
150 ?m, 300 ?m, 600 ?m, 1.18 mm,
2.36 mm, 4.75 mm, 10 mm, 20 mm,
40 mm, 80 mm
150 ? 1
300 ? 2
600 ? 3
4.75 - 6
15.The command area of a canal grows only one crop, i.e., wheat. The base period of wheat
is 120 days and its total water requirement, ?, is 40 cm. If the canal discharge is 2 m
3
/s, the
area, in hectares, rounded off to the nearest integer, which could be irrigated (neglecting all
losses) is ______________
Answer :
Solution :
B = 120 days
? = 0.4 m
and ? = 8.64B/D
? D = 2592 ha per (m
3
/s)
? For 2m
3
/sec water, area will be 5184 ha
11
16.The characteristic compressive strength of concrete required in a project is 25 MPa and
standard deviation in the observed compressive strength expected at site is 4 MPa. The
average compressive strength of cubes tested at different water-cement (w/c) ratios using the
same material as is used for the project is given in the table.
The water-cement ratio (in percent, round off to the lower integer) to be used in the mix
is________
Answer :
Solution :
fck = 25 ; ? = 4 MPa
fm = fck + 1.65? = 31.6 MPa
Using interpolation
= 46.7 (Rounded off to the lowest integer).
17.A solid sphere of radius, r, and made of material with density ?s, is moving through the
atmosphere (constant pressure, p) with a velocity, ?. The net force ONLY due to atmospheric
pressure (Fp) acting on the sphere at any time, t, is
A.
B. Zero
C. ?r
2
p
D. 4?r
2
p
Answer : B
Solution :
Force = area ? P
12
Net force will be zero as pressure acts from all sides.
18.An earthen dam of height H is made of cohesive soil whose cohesion and unit weight are c
and ?, respectively. If the factor of safety against cohesion is Fc, the Taylor?s stability
A.
B.
C.
D.
Answer : C
Solution :
Taylor?s stability number,
19.A closed thin walled tube has thickness, t, mean enclosed area within the boundary of the
centrline of tube?s thickness, Am, and shear stress ?. Torsional moment of resistance, T of the
section would be
A.
B.
13
C.
D.
Answer : A
Solution :
20.For a channel section subjected to a downward vertical shear force at its centroid, which
one of the following represents the correct distribution of shear stress in flange and web?
A.
B.
C.
14
D.
Answer : C
Solution :
Standard result
21.The degree of static indeterminancy of the plane frame is shown in the figure is ________
Answer :
Solution :
Ds = 3C ? R'
C = 6
Ds = (3 ? 6 ? 2) ? 1 (due to hinge)
= 15
15
22.Structural failures considered in the mechanistic method of bituminous pavement design
are
A. Shear and slippage
B. Fatique and Rutting
C. Fatique and shear
D. Rutting and shear
Answer : B
Solution :
As per IRC66:2012
23.Which one of the options contains ONLY primary air pollutants?
A. Ozone and peroxyacetyl nitrate
B. Nitrogen oxides and peroxyacetyl nitrate
C. Hydrocarbons and nitrogen oxides
D. Hydrocarbons and ozone
Answer : C
Solution :
Ozone and PAN are secondary air pollutants.
24.The following inequality is true for all x close to 0.
What is the value of
A. 2
B. 1/2
C. 0
16
D. 1
Answer : A
Solution :
It is form
L?s hospital rule (differentiate)
Putting 0 everywhere ? still form.
Differentiating numerator and denominator again,
25.The velocity field in a flow system is given by v = 2i + (x + y)j + (xyz)k. The acceleration
of the fluid at (1, 1, 2) is
A. j + k
B. 2i + 10 k
C. 4j + 10k
D. 4i + 12 k
Answer : C
Solution :
17
and
= 2 + (x + y) + (xyz)(0) + 0
and
= 2(yz) + (x + y)(xz) + (xyz)(xy) + 0
az = 2(1 ? 2) + (1 + 1)(1 ? 2) + (1 ? 1
? 2) (1?1)
= 10k
Therefore,
26.A steel column is restrained against both translation and rotation at one end and is
restrained only against rotation but free to translate at the other end. Theoretical and design
(IS: 800 ? 2007) values, respectively, of effective length factor of the column are
18
A. 1.0 and 1.0
B. 1.2 and 1.0
C. 1.2 and 1.2
D. 1.0 and 1.2
Answer : D
Solution :
As per IS:800-2007
27.Euclindean norm (length) of the vector [4 ?2 ? 6]
T
is
A. ?48
B. ?24
C. ?12
D. ?56
Answer : D
Solution :
The Euclidean norm assigns to each vector the length of its arrow. Because of this,
the Euclidean norm is often known as the magnitude. So,
Length
28.An inflow hydrograph is routed through a reservoir to produce an outflow hydrograph.
The peak flow of the inflow hydrograph is PI and the time of occurrence of the peak is tI. The
peak flow of the outflow hydrograph is P0 and the time of occurance of the peak is t0. Which
one of the following statements is correct?
A. PI < P0 and tI > t0
B. PI > P0 and tI > t0
C. PI < P0 and tI < t0
D. PI > P0 and tI < t0
Answer : D
Solution :
19
Pl > Po ; tl < to
29.Construction of a new building founded on a clayey soil was completed in January In
January 2014, the average consolidation settlement of the foundation in clay was recorded as
10 mm. The ultimate consolidation settlement was estimated in design as 40 mm.
Considering double drainage to occur at the clayey soil site, the expected consolidation
settlement in January 2019 (in mm, round off to the nearest integer) will be _____________
Answer :
Solution :
Ultimate consolidation = 40 mm
Recorded consolidation = 10 mm
? Total recorded consolidation
? 40 ? 0.375
20
30.The notation ?SC? as per Indian standard Soil Classification System refers to
A. Clayey silt
B. Sandy clay
C. Calyey sand
D. Silty clay
Answer : C
Solution :
SC : clayey sand
31.The speed-density relationship in a mid-block section of a highway follows the
Greenshield?s model. If the free flow speed is vf and the jam density is kj, the maximum flow
observed on this ection is
A.
B.
C. fvkj
D.
Answer : D
Solution :
?(1)
21
32.An anisotropic soil deposit has coefficient of permeability in vertical and horizontal
directions as kz and kx, respectively. For constructing a flow net, the horizontal dimension of
the problem?s geometry is transformed by a multiplying factor of
A.
B.
C.
D.
Answer : C
Solution :
Flow net for anisotropic soil.
?(i)
If we transformed geometry in x direction let x cordinate be transformed to the new
coordinate xt by the transformation.
22
?(ii)
From eq. (i) & (ii),
Hence prove
So, multiplied factor
33.The Laplace transform of sinh (at) is
A.
B.
C.
D.
Answer : C
Solution :
Laplace transform of sinh (at) =
23
34.The data from a closed traverse survey PQRS (run in the clockwise direction) are given in
the table
The closing error for the traverse PQRS (in degrees) is________
Answer :
Solution :
n = 4 (number of sides of closed traverse)
(2n ? 4) ? 90? = 360?
so, error in included angle
= (88 + 92 + 94 + 89) ? 360 = +3?
35.A vehicle is moving on a road of grade +4% at a speed of 20 m/s. Consider the coefficient
of rolling friction as 0.46 and acceleration due to gravity as 10 m/s
2
. On applying brakes to
reach a speed of 10 m/s, the required braking distance (in m, round off to nearest integer)
along the horizontal, is ______.
Answer :
Solution :
Given: grade = +4%
V1 = 20 m/sec.
f = 0.46
g = 10 m/sec.
V1 = 10 m/sec.
24
We know,
36.A broad gauge railway line passes through a horizontal curved section (radius = 875 m) of
length 200 m. The allowable speed on this portion is 100 km/h. For calculating the cant,
consider the gauge as centre-to-centre distance between the rail heads, equal to 1750mm, The
maximum permissible cant (in mm, round off to 1 decimal place) with respect to the centreto-
centre distance between the rail heads is ______.
Answer :
Solution :
Given data:
R = 875 mm
Allowable speed = 100 kmph
Gauge length G = 1750 mm
Allowable cant
37.When a specimen of M25 concrete is loaded to a stress level of 12.5 MPa, a strain of 500
? 10
?6
is recorded. If this load is allowed to stand for a long time, the strain increases to 1000
? 10
?6
. In accordance with provisions of IS: 456-2000, considering the long-term effects, the
effective modulus of elasticity of the concrete (in MPa) is ________
Answer :
Solution :
25
Short term strain = 500 ? 10
?6
Long term strain = 1000 ? 10
?6
So, creep coefficient,
? = 1
Long-term effective modulus
= 12500 N/mm
2
= 12500 MPa
or
38.The probability density function of a continuous random variable distributed uniformly
between x and y (for y > x) is
A.
B. x ? y
C. y ? x
D.
Answer : D
Solution :
Probability density function of a uniformly distributed random variable.
26
39.The uniform arrival and uniform service rates observed on an approach road to a
signalized intersection are 20 and 50 vehicles/minutes, respectively. For this signal, the red
time is 30 s, the effective green time is 30 s, and the cycle length is 60s. Assuming that
initially there are no vehicles in the queue, the average delay per vehicle using the approach
road during a cycle length (in s, round off to 2 decimal places) is _______
Answer :
Solution :
Average delay per vehicle
= 12.5 sec
40.A rolled I-section beam is supported on a 75 mm wide bearing plate as shown in the
figure. Thickness of flange and web of the I-section are 20 mm and 8mm, respectively. Root
27
radius of the I-section is 10mm. Assuming: material yield stress,
fy = 250 MPa and partial safety factor for material, ?mo = 1.10
As per IS: 800-2007, the web bearing strength (in kN, round off to 2 decimal places) of the
beam is _______
Answer :
Solution :
Effective area in bearing = [75 + 2.5 (flange thickness + root radius)] ? 8
= [75 + 2.5 (20 + 10)] ? 8
= 1200 mm
2
so, web bearing strength
= 272.73 kN
41.The critical bending compressive stress in the extreme fibre of a structural steel section is
1000 MPa. It is given that the yield strength of the steel is 250 MPa, width of flange is 250
mm and thickness of flange is 15 mm. As per the provisions of IS: 800-2007, the
nondimensional slendeness ratio of the steel crosssection is
28
A. 0.50
B. 2.00
C. 0.25
D. 0.75
Answer : A
Solution :
Non-dimensional slenderness ratio
42.At the foot of a spillyway, water flows at a depth of 23 cm with a velocity of 8.1 m/s, as
shown in the figure.
The flow enters as an M-3 profile in the long wide rectangular channel with bed
slope and Manning?s n = 0.A hydraulic jump is formed at a certain distance from
the foot of the spillway. Assume the acceleration due to gravity, g = 9.81 m/s
2
. Just before the
hydraulic jump, the depth of flow y1 (in m, round off to 2 decimal places) is _________
Answer :
Solution :
Given data:
y = 0.23 m
V = 8.1 m/sec.
Slope,
29
h = 0.015
g = 9.81 m/sec
2
q = yV = 8.1 ? 0.23
= 1.863 m
3
/sec/m
It is given that flow enters as an M-3 profile in the long wide rectangular channel with bed
slope
From manning equation at M3 profile section.
[for wide channel R = y]
The flow profile will follow normal depth (yn) after jump.
For wide rectangular channel,
Here, yn = y 2 = 1.11 m
30
Again,
? y 1 = 0.417 m < y c [supercritical]
43.Consider the reactor shown in the figure. The concentration (in mg/l) of a compound in
the influent and effluent are C0 and C, flow rate through the reactor is Q m
3
/h respectively.
The compound is degraded in the reactor following the first order reactions. The mixing
condition of the reactor Complete Mix Flow Reactor (CMFR) or a plug-flow reactor (PFR).
The length of the reactor can be adjusted in these two mixing conditions to LCMFR and
LPER while keeping the cross-section of the reactor constant. Assuming steady state and for
C/C0 = 0.8, the value of LCMFR/LPER (round off to 2 decimal places) is _______
Answer :
Solution :
A = constant
Q = AL
For plug flow
[ detention time for plug flow reaction]
For completely mix = C =
[ detention time for completely mix reaction]
31
Also,
44.A series of perpendicular offsets taken from a curved boundary wall to a straight survey
line at an interval of 6 m are 1.22, 1.67, 2.04, 2.34, 2.14, 1.87, and 1.15 m. The area (in m2,
round off to 2 decimal places) boundary by the survey line, curved boundary wall, the first
and the last offsets, determined using Simpson?s rule, is _______.
Answer :
Solution :
Area by simpson?s rule
45.A water treatment plant treats 6000 m
3
of water per day. As a part of the treatment
process, discrete particles are required to be settled in a clarifier. A column test indicates that
an overflow rate of 1.5 m per hour would produce the desired removal of particles through
32
settling in the clarifier having a depth of 3.0 m. The volume of the required clarifier, (in m
3
,
round off to 1 decimal place) would be
Answer :
Solution :
Given data:
Flow rate = 6000 m
3
/day
Over flow rate = 1.5 m/hour
= 1.5 ? 24 m/day = 36 m/day
Flow area
= 166.67 m
2
Volume required for clarifier = Flow area ? depth
= 166.67 ? 3 = 500 m
3
46.A flexible pavement has the following class of loads during a particular hour of the day.
i. 80 buses with 2-axles (each axle load of 40 kN);
ii. 160 trucks with 2-axles (front and rear axle loads of 40 kN and 80 kN, respectively)
The equivalent standard axle load repetitions for this vehicle combination as per IRC:37-2012
would be
A. 320
B. 250
C. 240
D. 180
Answer : D
Solution :
33
= 5 + 5 + 10 + 160
= 180
47.Constant head permeability tests were performed on two soil specimens, S1 and SThe
ratio of height of the two specimens (LS1: LS2) is 1.5, the ratio of the diameter of specimens
(DS1:DS2) is 0.5, and the ratio of the constant head (hs1:hs2) applied on the specimens is 2.0. If
the discharge from both the specimens is equal, the ratio of the permeability of the soil
specimens (ks1:ks2) is ________
Answer :
Solution :
For constant head permeability test,
Q ? discharge
L ? length of specimen
a ? area of cross-section of specimen
h ? constant head
Given,
34
48.A long uniformly distributed load of 10 kN/m and a concentrated load of 60 kN are
moving together on the beam ABCD shown in the figure (not drawn to scale). The relative
positions of the two loads are not fixed. The maximum shear force (in kN, round off to the
nearest integer) caused at the internal hinge B due to the two loads is __________
Answer :
Solution :
35
Maximum
49.A square footing of 2m sides rests on the surface of a homogeneous soil bed having the
properties: cohesion c = 24 kPa, angle of internal friction ? = 25?, and unit weight ? = 18
kN/m
3
. Terzaghi?s bearing capacity factor ? = 25? are Nc = 25.1, Nq = 12.7, N? = 9.7, N?c =
14.8, N?q = 5.6, and N?? = 3.The ultimate bearing capacity of the foundation (in kPa, round
off to 2 decimal places) is ______.
Answer :
Solution :
Here, ? < 29
o
Footing rests on the ground
Hence, q = 0
so,
use, accordingly.
50.The dimensions of a soil sampler are given in the table.
36
For this sampler, the outside clearance ratio (in percent, round off to 2 decimal places) is
_________.
Answer :
Solution :
Given:
D4 = 90 mm
D2 = 100 mm
51.A plane frame shown in the figure (not to scale) has linear elastic springs at node H. The
spring constants are kx = ky = 5 ? 10
5
kN/m
3
and k? = 3 ? 10
5
kNm/rad.
For the externally applied moment of 30 kNm at node F, the rotation (in degrees, round off to
3 decimals) observed in the rotational spring at node H is ________
Answer :
37
Solution :
R ? 3 = 30
? R = 10 kN
From right side of FBD
R ? 3 = K? . ?
= 10
?4
rad = 0.0057
= 0.006 degree
52.Chlorine is used as the disinfectant in a municipal water treatment plant. It achieves 50
percent of disinfection efficiency measured in terms of killing the indicator microorganisms
(E-Coli) in 3 minutes. The minimum time required to achieve 99 percent disinfection
efficiency would be
A. 9.93 minutes
B. 11.93 minutes
C. 21.93 minutes
D. 19.93 minutes
Answer : D
Solution :
Disinfection eff.
38
Again,
? t = 19.93 min.
53.A confined aquifer of 15 m constant thickness is sandwiched between two aquicludes as
shown in the figure (not drawn to scale)
The heads indicated by two piezometers P and Q are 55.2 m and 34.1 m, respectively. The
aquifer has a hydraulic conductivity of 80 m/ day and its effective porosity is 0.If the distance
between the piezometers is 2500 m, the time taken by the water to travel through the aquifer
from piezometer location P to Q (in days, round off to 1 decimal place) is ______.
Answer :
Solution :
Given,
39
= 9.259 ? 10
?4
m/s
h = 55.2 ? 34.1 = 21.1 m
L = 2500 m
n = 0.25
B = 15 m
As per Darcy?s law,
V = ki
Seepage velocity
54.For a plane stress problem, the state of stress at a point P is represented by the stress
element as shown in the figure.
40
By how much angle (?) in degrees the stress element should be rotated in order to get the
planes of maximum shear stress?
A. 26.6
B. 48.3
C. 31.7
D. 13.3
Answer : C
Solution :
41
Coordinates of
= (30, 0)
In ?ABC ,
BC = 80 ? 30 = 50 MPa
AB = 25 MPa
Angle to be rotated
55.The inverse of the matix is
42
A.
B.
C.
D.
Answer : B
Solution :
Det. of matrix, |A| = 2 (12 ? 2) ? 3(16 ? 1) + 4(8 ? 3)
= 20 ? 45 + 20
= ?5
(adj A) = (cof A)'
cof of A11 = 12 ? 2 = 10
43
cof of A12 = ?(16 ? 1) = ?15
cof of A13 = 8 ? 3 = 5
cof of A21 = ?(12 ? 8) = ?4
cof of A22 = (8 ? 4) = 4
cof of A23 = ?(4 ? 3) = ?1
cof of A31 = (3 ? 12) = ?9
cof of A32 = ?(2 ? 16) = 14
cof of A33 = (6 ? 12) = ?6
adj A = (cof A)'
56.Two identical pipes (i.e. having the same length, same diameter, and same roughness) are
used to withdraw water from a reservoir. In the first case, they are attached in series and also
discharge freely into the atmosphere. In the second case, they are attached in parallel and
friction factor is same in both the cases, the ratio of the discharge in the parallel arrangement
to that in the series arrangement (round off to 2 decimal places) is _____
Answer :
Solution :
44
Case (1): Series connection,
then ?(i)
Case (ii) : parallel connection
then, ...(ii)
then from equation (i) and (ii)
57.A camera with a focal length of 20 cm fitted in an aircraft is used for taking vertical aerial
photographs of a terrain. The average elevation of the terrain is 1200 m above mean sea level
(MSL). What is the height above MSL at which an aircraft must fly in order to get the aerial
photographs at a scale of 1:8000?
A. 3200 m
B. 2800 m
45
C. 2600 m
D. 3000 m
Answer : B
Solution :
Given that
f = 0.2 m
h = 1200 m
then,
58.Raw municipal solid waste (MSW) collected from a city contains 70% decomposable
material that can be converted to methane. The water content of the decomposable material is
35%. An elemental anlysis of the decomposable material yields the following mass percent.
C : H : O: N : other = 44 : 6 : 43 : 0.8 : 6.2
The methane production of the decomposable material is governed by the following
stoichiometric relation
CaHbOcNd + nH2O ? mCH4 + sCO2 + dNH3
Given atomic weights: C = 12, H = 1, O = 16, N = The mass of methane produced (in grams,
round off to 1 decimal place) per kg of raw MSW will be _______
Answer :
Solution :
For the MSW, the phase diagram is as follows
46
From the mass percent given,
12a = 44x
b = 6x
16c = 43x
14d = 0.8x
? = 100x
100x = wt of decomposable waste
= 0.455 kg
? a = 16.683, b = 27.3,
c = 12.228, d = 0.26
From the balance of reaction we have
a = m + s ?(A)
b + 2n = 4m + 3d ?(B)
c + n = 2s ?(C)
? 2c + 2n = 4s ?(D)
? b ? 2c = 4m ? 4s + 3d
? m - s = 0.516
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2
GATE CE 2019 Set 2: Questions & Solutions
General Aptitude
1.Daytime temperature in Delhi can ______ 40?C
A. Peak
B. reach
C. get
D. stand
Answer : B
Solution :
Daytime temperature in Delhi can reach 40?C
2.The growth rate of ABC Motors in 2017 was the same ________ XYZ Motors in 2016 .
A. As those of
B. As that off
C. As that of
D. As off
Answer : C
Solution :
The growth rate of ABC Motors in 2017 was the same as that of XYZ Motors in 2016.
3.Suresh wanted to lay a new carpet in his new mansion with an area of 70 55 sq. mts.
However an area of 550 sq. mts had to be left out for flower pots. If the cost of carpet is Rs.
50 per sq. mts, how much money (in Rs.) will be spent by Suresh for the carpet now?
A. Rs. 1,65,000
B. Rs. 1,92,500
C. Rs. 1,27,500
D. Rs. 2,75,000
Answer : A
3
Solution :
Area of mansion = 70 ? 55 = 3850 m
2
Area for flower pots = 550 m
2
? Area left for carpet = 3850 ? 550 = 3300m
2
? Cost = 3300 ? 50 = 165000
4.A retaining wall with measurements 30 m ? 12 m ? 6 m was constructed with bricks of
dimensions 8 cm ? 6 cm. If 60% of the wall consists of bricks used for the construction is
___________ lakhs.
A. 45
B. 30
C. 40
D. 75
Answer : A
Solution :
Volume of wall = 30 ? 12 ? 6 = 2160 m
3
= 2160 ? 106 cm
3
Total volume of bricks required = 2160 ? 106 ? 0.6 cm
3
= 1296 ? 106 cm
3
Volume of one brick = 8 ? 6 ? 6 = 288 cm
3
? No. of bricks required
= 4.5 ? 10
6
= 45 lakhs
5.Hima Das was _______ only Indian athlete to win _____________ gold for India.
A. the, many
B. an, the
C. an, a
4
D. the, a
Answer : D
Solution :
Hima Das was the only Indian athlete to win a gold for India.
6.Population of state X increased by x% and the population of state Y increased by y% from
2001 to 2011. Assume that x is greater than y. Let P be the ratio of the population of state X
to state Y in a given year. The percentage increase in P from 2001 to 2011 is_____________
A. x ? y
B.
C.
D.
Answer : C
Solution :
Let population of X is ?A? in 2001
and Population of Y is ?B? in 2001
? Population of A in 2011
& Population of B in 2011
Given,
5
% increase in P
7.The Newspaper report that over 500 hectares of tribal land spread across 28 tribal
settlements in Mohinitampuram forest division have already been ?alienated?. A top forest
official said, ?First the tribals are duped out of their land holdings. Second, the families thus
rendered landless are often forced to encroach further into the forests?.
On the basis of the information available in the paragraph, _______ is/are responsible for
duping the tribals.
A. The newspaper
B. Landless families
C. forest officials
D. it cannot be inferred who
Answer : D
Solution :
?it cannot be inferred who?
From given information, nobody can be held responsible.
8.An oil tank can be filled by pipe X in 5 hours and pipe Y in 4 hours, each pump working on
its own. When the oil tank is full and the drainage hole is open, the oil is drained in 20 hours.
6
If initially the tank was empty and someone started the two pumps together but left the
drainage hole open, how many hours will it tak for the tank to be filled? (Assume that the rate
of drainage is independent of the head)
A. 2.50
B. 1.50
C. 2.00
D. 4.00
Answer : A
Solution :
Pipe X will fill how much in one hour tank
Pipe Y will fill how much in one hour tank
Drainage will drain out how much water in 1 hour tank
? Total tank filled in one hour
tank gets filled in = 1 hour
? Full (i) tank gets filled in
9.Mohan, the manager, wants his four workers to work in pairs. No paper should work for
more than 5 hours. Ram and Johan have worked together for 5 hours. Krishna and Amir have
7
worked as a team for 2 hours. Krishan does not want to work with Ram whom should mohan
allot to work with Johan, if we wants all the workers to continue working?
A. Amir
B. Krishna
C. Ram
D. None of the three
Answer : B
Solution :
Conditions given:
(i) Ram & John have worked for 5 hours.
(ii) Krishna doesn?t want to work with Ram.
(iii) No pair should work beyond 5 hours.
Hence, Krishna should work with John to satisfy the above conditions.
10.?Popular Hindi fiction, despite ? or perhaps because of ? its wide reach, often does not
appear in our cinema. As ideals that viewers are meant to look up to rather than identify with,
Hindi film protagonisits usually read books of apsirational value: textbooks, English books,
or high value literature?.
Which one of the following CANNOT be inferred from the paragraph above?
A. Textbooks, English books or high literature have apsirational value, but not popular Hindi
fiction
B. People do not look up to writers of textbooks, English book or high value literature
C. Though popular hindi fiction was wide readh, it often does not appear in the movies
D. Protagonists in Hindi movies, being ideals for viewers, read only books of aspirational
value.
Answer : B
Solution :
People do not look up to writers of textbooks, English book or high value literature.
8
Civil Engineering
11.What is curl of the vector field 2x
2
yi + 5z
2
j - 4yzk?
A. - 14zi - 2x
2
k
B. 6zi + 4xj - 2x
2
k
C. 6zi + 8xyj + 2x
2
yk
D. -14zi + 6yj + 2x
2
k
Answer : A
Solution :
12.Analysis of a water sample revealed that the sample contains the following species.
9
Concentrations of which of the species will be required to compute alkalinity?
A.
B.
C.
D.
Answer : A
Solution :
H2CO3 and HCO3
-
never come together
13.The value of the function f(x) is given at n distinct values of x and its value is to be
interpolated at the point x
*
using all the n points. The estimate is obtained first by the
Lagrange polynomial, denoted by IL, and then by the Newton polynomial, denoted by IN.
Which one of the following statements is correct?
A. IL is always greater than IN
B. No definite relation exists between IL and IN.
C. IL is always less than IN
D. IL and IN are always equal
Answer : B
Solution :
Lagrange?s form is more efficient when you have to interpolate several data sets on the same
data point.
Newton?s form is more efficient when you have to interpolate data incrementally. So no
relationship between both.
14.If the fineness modulus of a sample of the fine aggregates is 4.3, the mean size of the
particles in the sample is between
10
A. 150 ?m and 300 ?m
B. 2.36 mm and 4.75 mm
C. 300 ?m and 600 ?m
D. 1.18 mm and 2.36 mm
Answer : D
Solution :
150 ?m, 300 ?m, 600 ?m, 1.18 mm,
2.36 mm, 4.75 mm, 10 mm, 20 mm,
40 mm, 80 mm
150 ? 1
300 ? 2
600 ? 3
4.75 - 6
15.The command area of a canal grows only one crop, i.e., wheat. The base period of wheat
is 120 days and its total water requirement, ?, is 40 cm. If the canal discharge is 2 m
3
/s, the
area, in hectares, rounded off to the nearest integer, which could be irrigated (neglecting all
losses) is ______________
Answer :
Solution :
B = 120 days
? = 0.4 m
and ? = 8.64B/D
? D = 2592 ha per (m
3
/s)
? For 2m
3
/sec water, area will be 5184 ha
11
16.The characteristic compressive strength of concrete required in a project is 25 MPa and
standard deviation in the observed compressive strength expected at site is 4 MPa. The
average compressive strength of cubes tested at different water-cement (w/c) ratios using the
same material as is used for the project is given in the table.
The water-cement ratio (in percent, round off to the lower integer) to be used in the mix
is________
Answer :
Solution :
fck = 25 ; ? = 4 MPa
fm = fck + 1.65? = 31.6 MPa
Using interpolation
= 46.7 (Rounded off to the lowest integer).
17.A solid sphere of radius, r, and made of material with density ?s, is moving through the
atmosphere (constant pressure, p) with a velocity, ?. The net force ONLY due to atmospheric
pressure (Fp) acting on the sphere at any time, t, is
A.
B. Zero
C. ?r
2
p
D. 4?r
2
p
Answer : B
Solution :
Force = area ? P
12
Net force will be zero as pressure acts from all sides.
18.An earthen dam of height H is made of cohesive soil whose cohesion and unit weight are c
and ?, respectively. If the factor of safety against cohesion is Fc, the Taylor?s stability
A.
B.
C.
D.
Answer : C
Solution :
Taylor?s stability number,
19.A closed thin walled tube has thickness, t, mean enclosed area within the boundary of the
centrline of tube?s thickness, Am, and shear stress ?. Torsional moment of resistance, T of the
section would be
A.
B.
13
C.
D.
Answer : A
Solution :
20.For a channel section subjected to a downward vertical shear force at its centroid, which
one of the following represents the correct distribution of shear stress in flange and web?
A.
B.
C.
14
D.
Answer : C
Solution :
Standard result
21.The degree of static indeterminancy of the plane frame is shown in the figure is ________
Answer :
Solution :
Ds = 3C ? R'
C = 6
Ds = (3 ? 6 ? 2) ? 1 (due to hinge)
= 15
15
22.Structural failures considered in the mechanistic method of bituminous pavement design
are
A. Shear and slippage
B. Fatique and Rutting
C. Fatique and shear
D. Rutting and shear
Answer : B
Solution :
As per IRC66:2012
23.Which one of the options contains ONLY primary air pollutants?
A. Ozone and peroxyacetyl nitrate
B. Nitrogen oxides and peroxyacetyl nitrate
C. Hydrocarbons and nitrogen oxides
D. Hydrocarbons and ozone
Answer : C
Solution :
Ozone and PAN are secondary air pollutants.
24.The following inequality is true for all x close to 0.
What is the value of
A. 2
B. 1/2
C. 0
16
D. 1
Answer : A
Solution :
It is form
L?s hospital rule (differentiate)
Putting 0 everywhere ? still form.
Differentiating numerator and denominator again,
25.The velocity field in a flow system is given by v = 2i + (x + y)j + (xyz)k. The acceleration
of the fluid at (1, 1, 2) is
A. j + k
B. 2i + 10 k
C. 4j + 10k
D. 4i + 12 k
Answer : C
Solution :
17
and
= 2 + (x + y) + (xyz)(0) + 0
and
= 2(yz) + (x + y)(xz) + (xyz)(xy) + 0
az = 2(1 ? 2) + (1 + 1)(1 ? 2) + (1 ? 1
? 2) (1?1)
= 10k
Therefore,
26.A steel column is restrained against both translation and rotation at one end and is
restrained only against rotation but free to translate at the other end. Theoretical and design
(IS: 800 ? 2007) values, respectively, of effective length factor of the column are
18
A. 1.0 and 1.0
B. 1.2 and 1.0
C. 1.2 and 1.2
D. 1.0 and 1.2
Answer : D
Solution :
As per IS:800-2007
27.Euclindean norm (length) of the vector [4 ?2 ? 6]
T
is
A. ?48
B. ?24
C. ?12
D. ?56
Answer : D
Solution :
The Euclidean norm assigns to each vector the length of its arrow. Because of this,
the Euclidean norm is often known as the magnitude. So,
Length
28.An inflow hydrograph is routed through a reservoir to produce an outflow hydrograph.
The peak flow of the inflow hydrograph is PI and the time of occurrence of the peak is tI. The
peak flow of the outflow hydrograph is P0 and the time of occurance of the peak is t0. Which
one of the following statements is correct?
A. PI < P0 and tI > t0
B. PI > P0 and tI > t0
C. PI < P0 and tI < t0
D. PI > P0 and tI < t0
Answer : D
Solution :
19
Pl > Po ; tl < to
29.Construction of a new building founded on a clayey soil was completed in January In
January 2014, the average consolidation settlement of the foundation in clay was recorded as
10 mm. The ultimate consolidation settlement was estimated in design as 40 mm.
Considering double drainage to occur at the clayey soil site, the expected consolidation
settlement in January 2019 (in mm, round off to the nearest integer) will be _____________
Answer :
Solution :
Ultimate consolidation = 40 mm
Recorded consolidation = 10 mm
? Total recorded consolidation
? 40 ? 0.375
20
30.The notation ?SC? as per Indian standard Soil Classification System refers to
A. Clayey silt
B. Sandy clay
C. Calyey sand
D. Silty clay
Answer : C
Solution :
SC : clayey sand
31.The speed-density relationship in a mid-block section of a highway follows the
Greenshield?s model. If the free flow speed is vf and the jam density is kj, the maximum flow
observed on this ection is
A.
B.
C. fvkj
D.
Answer : D
Solution :
?(1)
21
32.An anisotropic soil deposit has coefficient of permeability in vertical and horizontal
directions as kz and kx, respectively. For constructing a flow net, the horizontal dimension of
the problem?s geometry is transformed by a multiplying factor of
A.
B.
C.
D.
Answer : C
Solution :
Flow net for anisotropic soil.
?(i)
If we transformed geometry in x direction let x cordinate be transformed to the new
coordinate xt by the transformation.
22
?(ii)
From eq. (i) & (ii),
Hence prove
So, multiplied factor
33.The Laplace transform of sinh (at) is
A.
B.
C.
D.
Answer : C
Solution :
Laplace transform of sinh (at) =
23
34.The data from a closed traverse survey PQRS (run in the clockwise direction) are given in
the table
The closing error for the traverse PQRS (in degrees) is________
Answer :
Solution :
n = 4 (number of sides of closed traverse)
(2n ? 4) ? 90? = 360?
so, error in included angle
= (88 + 92 + 94 + 89) ? 360 = +3?
35.A vehicle is moving on a road of grade +4% at a speed of 20 m/s. Consider the coefficient
of rolling friction as 0.46 and acceleration due to gravity as 10 m/s
2
. On applying brakes to
reach a speed of 10 m/s, the required braking distance (in m, round off to nearest integer)
along the horizontal, is ______.
Answer :
Solution :
Given: grade = +4%
V1 = 20 m/sec.
f = 0.46
g = 10 m/sec.
V1 = 10 m/sec.
24
We know,
36.A broad gauge railway line passes through a horizontal curved section (radius = 875 m) of
length 200 m. The allowable speed on this portion is 100 km/h. For calculating the cant,
consider the gauge as centre-to-centre distance between the rail heads, equal to 1750mm, The
maximum permissible cant (in mm, round off to 1 decimal place) with respect to the centreto-
centre distance between the rail heads is ______.
Answer :
Solution :
Given data:
R = 875 mm
Allowable speed = 100 kmph
Gauge length G = 1750 mm
Allowable cant
37.When a specimen of M25 concrete is loaded to a stress level of 12.5 MPa, a strain of 500
? 10
?6
is recorded. If this load is allowed to stand for a long time, the strain increases to 1000
? 10
?6
. In accordance with provisions of IS: 456-2000, considering the long-term effects, the
effective modulus of elasticity of the concrete (in MPa) is ________
Answer :
Solution :
25
Short term strain = 500 ? 10
?6
Long term strain = 1000 ? 10
?6
So, creep coefficient,
? = 1
Long-term effective modulus
= 12500 N/mm
2
= 12500 MPa
or
38.The probability density function of a continuous random variable distributed uniformly
between x and y (for y > x) is
A.
B. x ? y
C. y ? x
D.
Answer : D
Solution :
Probability density function of a uniformly distributed random variable.
26
39.The uniform arrival and uniform service rates observed on an approach road to a
signalized intersection are 20 and 50 vehicles/minutes, respectively. For this signal, the red
time is 30 s, the effective green time is 30 s, and the cycle length is 60s. Assuming that
initially there are no vehicles in the queue, the average delay per vehicle using the approach
road during a cycle length (in s, round off to 2 decimal places) is _______
Answer :
Solution :
Average delay per vehicle
= 12.5 sec
40.A rolled I-section beam is supported on a 75 mm wide bearing plate as shown in the
figure. Thickness of flange and web of the I-section are 20 mm and 8mm, respectively. Root
27
radius of the I-section is 10mm. Assuming: material yield stress,
fy = 250 MPa and partial safety factor for material, ?mo = 1.10
As per IS: 800-2007, the web bearing strength (in kN, round off to 2 decimal places) of the
beam is _______
Answer :
Solution :
Effective area in bearing = [75 + 2.5 (flange thickness + root radius)] ? 8
= [75 + 2.5 (20 + 10)] ? 8
= 1200 mm
2
so, web bearing strength
= 272.73 kN
41.The critical bending compressive stress in the extreme fibre of a structural steel section is
1000 MPa. It is given that the yield strength of the steel is 250 MPa, width of flange is 250
mm and thickness of flange is 15 mm. As per the provisions of IS: 800-2007, the
nondimensional slendeness ratio of the steel crosssection is
28
A. 0.50
B. 2.00
C. 0.25
D. 0.75
Answer : A
Solution :
Non-dimensional slenderness ratio
42.At the foot of a spillyway, water flows at a depth of 23 cm with a velocity of 8.1 m/s, as
shown in the figure.
The flow enters as an M-3 profile in the long wide rectangular channel with bed
slope and Manning?s n = 0.A hydraulic jump is formed at a certain distance from
the foot of the spillway. Assume the acceleration due to gravity, g = 9.81 m/s
2
. Just before the
hydraulic jump, the depth of flow y1 (in m, round off to 2 decimal places) is _________
Answer :
Solution :
Given data:
y = 0.23 m
V = 8.1 m/sec.
Slope,
29
h = 0.015
g = 9.81 m/sec
2
q = yV = 8.1 ? 0.23
= 1.863 m
3
/sec/m
It is given that flow enters as an M-3 profile in the long wide rectangular channel with bed
slope
From manning equation at M3 profile section.
[for wide channel R = y]
The flow profile will follow normal depth (yn) after jump.
For wide rectangular channel,
Here, yn = y 2 = 1.11 m
30
Again,
? y 1 = 0.417 m < y c [supercritical]
43.Consider the reactor shown in the figure. The concentration (in mg/l) of a compound in
the influent and effluent are C0 and C, flow rate through the reactor is Q m
3
/h respectively.
The compound is degraded in the reactor following the first order reactions. The mixing
condition of the reactor Complete Mix Flow Reactor (CMFR) or a plug-flow reactor (PFR).
The length of the reactor can be adjusted in these two mixing conditions to LCMFR and
LPER while keeping the cross-section of the reactor constant. Assuming steady state and for
C/C0 = 0.8, the value of LCMFR/LPER (round off to 2 decimal places) is _______
Answer :
Solution :
A = constant
Q = AL
For plug flow
[ detention time for plug flow reaction]
For completely mix = C =
[ detention time for completely mix reaction]
31
Also,
44.A series of perpendicular offsets taken from a curved boundary wall to a straight survey
line at an interval of 6 m are 1.22, 1.67, 2.04, 2.34, 2.14, 1.87, and 1.15 m. The area (in m2,
round off to 2 decimal places) boundary by the survey line, curved boundary wall, the first
and the last offsets, determined using Simpson?s rule, is _______.
Answer :
Solution :
Area by simpson?s rule
45.A water treatment plant treats 6000 m
3
of water per day. As a part of the treatment
process, discrete particles are required to be settled in a clarifier. A column test indicates that
an overflow rate of 1.5 m per hour would produce the desired removal of particles through
32
settling in the clarifier having a depth of 3.0 m. The volume of the required clarifier, (in m
3
,
round off to 1 decimal place) would be
Answer :
Solution :
Given data:
Flow rate = 6000 m
3
/day
Over flow rate = 1.5 m/hour
= 1.5 ? 24 m/day = 36 m/day
Flow area
= 166.67 m
2
Volume required for clarifier = Flow area ? depth
= 166.67 ? 3 = 500 m
3
46.A flexible pavement has the following class of loads during a particular hour of the day.
i. 80 buses with 2-axles (each axle load of 40 kN);
ii. 160 trucks with 2-axles (front and rear axle loads of 40 kN and 80 kN, respectively)
The equivalent standard axle load repetitions for this vehicle combination as per IRC:37-2012
would be
A. 320
B. 250
C. 240
D. 180
Answer : D
Solution :
33
= 5 + 5 + 10 + 160
= 180
47.Constant head permeability tests were performed on two soil specimens, S1 and SThe
ratio of height of the two specimens (LS1: LS2) is 1.5, the ratio of the diameter of specimens
(DS1:DS2) is 0.5, and the ratio of the constant head (hs1:hs2) applied on the specimens is 2.0. If
the discharge from both the specimens is equal, the ratio of the permeability of the soil
specimens (ks1:ks2) is ________
Answer :
Solution :
For constant head permeability test,
Q ? discharge
L ? length of specimen
a ? area of cross-section of specimen
h ? constant head
Given,
34
48.A long uniformly distributed load of 10 kN/m and a concentrated load of 60 kN are
moving together on the beam ABCD shown in the figure (not drawn to scale). The relative
positions of the two loads are not fixed. The maximum shear force (in kN, round off to the
nearest integer) caused at the internal hinge B due to the two loads is __________
Answer :
Solution :
35
Maximum
49.A square footing of 2m sides rests on the surface of a homogeneous soil bed having the
properties: cohesion c = 24 kPa, angle of internal friction ? = 25?, and unit weight ? = 18
kN/m
3
. Terzaghi?s bearing capacity factor ? = 25? are Nc = 25.1, Nq = 12.7, N? = 9.7, N?c =
14.8, N?q = 5.6, and N?? = 3.The ultimate bearing capacity of the foundation (in kPa, round
off to 2 decimal places) is ______.
Answer :
Solution :
Here, ? < 29
o
Footing rests on the ground
Hence, q = 0
so,
use, accordingly.
50.The dimensions of a soil sampler are given in the table.
36
For this sampler, the outside clearance ratio (in percent, round off to 2 decimal places) is
_________.
Answer :
Solution :
Given:
D4 = 90 mm
D2 = 100 mm
51.A plane frame shown in the figure (not to scale) has linear elastic springs at node H. The
spring constants are kx = ky = 5 ? 10
5
kN/m
3
and k? = 3 ? 10
5
kNm/rad.
For the externally applied moment of 30 kNm at node F, the rotation (in degrees, round off to
3 decimals) observed in the rotational spring at node H is ________
Answer :
37
Solution :
R ? 3 = 30
? R = 10 kN
From right side of FBD
R ? 3 = K? . ?
= 10
?4
rad = 0.0057
= 0.006 degree
52.Chlorine is used as the disinfectant in a municipal water treatment plant. It achieves 50
percent of disinfection efficiency measured in terms of killing the indicator microorganisms
(E-Coli) in 3 minutes. The minimum time required to achieve 99 percent disinfection
efficiency would be
A. 9.93 minutes
B. 11.93 minutes
C. 21.93 minutes
D. 19.93 minutes
Answer : D
Solution :
Disinfection eff.
38
Again,
? t = 19.93 min.
53.A confined aquifer of 15 m constant thickness is sandwiched between two aquicludes as
shown in the figure (not drawn to scale)
The heads indicated by two piezometers P and Q are 55.2 m and 34.1 m, respectively. The
aquifer has a hydraulic conductivity of 80 m/ day and its effective porosity is 0.If the distance
between the piezometers is 2500 m, the time taken by the water to travel through the aquifer
from piezometer location P to Q (in days, round off to 1 decimal place) is ______.
Answer :
Solution :
Given,
39
= 9.259 ? 10
?4
m/s
h = 55.2 ? 34.1 = 21.1 m
L = 2500 m
n = 0.25
B = 15 m
As per Darcy?s law,
V = ki
Seepage velocity
54.For a plane stress problem, the state of stress at a point P is represented by the stress
element as shown in the figure.
40
By how much angle (?) in degrees the stress element should be rotated in order to get the
planes of maximum shear stress?
A. 26.6
B. 48.3
C. 31.7
D. 13.3
Answer : C
Solution :
41
Coordinates of
= (30, 0)
In ?ABC ,
BC = 80 ? 30 = 50 MPa
AB = 25 MPa
Angle to be rotated
55.The inverse of the matix is
42
A.
B.
C.
D.
Answer : B
Solution :
Det. of matrix, |A| = 2 (12 ? 2) ? 3(16 ? 1) + 4(8 ? 3)
= 20 ? 45 + 20
= ?5
(adj A) = (cof A)'
cof of A11 = 12 ? 2 = 10
43
cof of A12 = ?(16 ? 1) = ?15
cof of A13 = 8 ? 3 = 5
cof of A21 = ?(12 ? 8) = ?4
cof of A22 = (8 ? 4) = 4
cof of A23 = ?(4 ? 3) = ?1
cof of A31 = (3 ? 12) = ?9
cof of A32 = ?(2 ? 16) = 14
cof of A33 = (6 ? 12) = ?6
adj A = (cof A)'
56.Two identical pipes (i.e. having the same length, same diameter, and same roughness) are
used to withdraw water from a reservoir. In the first case, they are attached in series and also
discharge freely into the atmosphere. In the second case, they are attached in parallel and
friction factor is same in both the cases, the ratio of the discharge in the parallel arrangement
to that in the series arrangement (round off to 2 decimal places) is _____
Answer :
Solution :
44
Case (1): Series connection,
then ?(i)
Case (ii) : parallel connection
then, ...(ii)
then from equation (i) and (ii)
57.A camera with a focal length of 20 cm fitted in an aircraft is used for taking vertical aerial
photographs of a terrain. The average elevation of the terrain is 1200 m above mean sea level
(MSL). What is the height above MSL at which an aircraft must fly in order to get the aerial
photographs at a scale of 1:8000?
A. 3200 m
B. 2800 m
45
C. 2600 m
D. 3000 m
Answer : B
Solution :
Given that
f = 0.2 m
h = 1200 m
then,
58.Raw municipal solid waste (MSW) collected from a city contains 70% decomposable
material that can be converted to methane. The water content of the decomposable material is
35%. An elemental anlysis of the decomposable material yields the following mass percent.
C : H : O: N : other = 44 : 6 : 43 : 0.8 : 6.2
The methane production of the decomposable material is governed by the following
stoichiometric relation
CaHbOcNd + nH2O ? mCH4 + sCO2 + dNH3
Given atomic weights: C = 12, H = 1, O = 16, N = The mass of methane produced (in grams,
round off to 1 decimal place) per kg of raw MSW will be _______
Answer :
Solution :
For the MSW, the phase diagram is as follows
46
From the mass percent given,
12a = 44x
b = 6x
16c = 43x
14d = 0.8x
? = 100x
100x = wt of decomposable waste
= 0.455 kg
? a = 16.683, b = 27.3,
c = 12.228, d = 0.26
From the balance of reaction we have
a = m + s ?(A)
b + 2n = 4m + 3d ?(B)
c + n = 2s ?(C)
? 2c + 2n = 4s ?(D)
? b ? 2c = 4m ? 4s + 3d
? m - s = 0.516
47
? m + s = 16.683
? m = 8.6
? Methane produced = 8.6 ? 16 g = 137.6 g
59.In the context of provisions relating to durability of concrete, consider the following
assertion:
Assertion (1): As per IS 456-2000, air entrainment to the extent of 3% to 6% is required for
concrete exposed to marine environment.
Assertion (2): The equivalent alkali content (in terms of Na2O equivalent) for a cement
containing 1% and 0.6% of Na2O and K2O, respectively, is approximately 1.4% (rounded to 1
decimal place).
Which one of the following statements is correct?
A. Assertion (1) is true and Assertion (2) is FALSE
B. Both Assertion (1) and Assertion (2) are TRUE
C. Both Assertion (1) and Assertion 2) are FALSE
D. Assertion (1) is false and Assertion (2) is TRUE
Answer : B
Solution :
As per IS-456, where freezing and thawing actions under wet conditions exit, inhance
durability can be obtained by the use of suitable air entraining admixture.
The entrained air percentage can vary from 4 ? 1 to 5 ? 1 (i.e. 3 to 6%) depending on size of
aggregate. Hence, Assertion (1) is correct.
Equivalent alkali content (in terms of Na2O equivalent)
= Na2O + 0.658 ? K2O
Molecular ratio of Na2O to K2O = 0.658
= 1% + 0.658 ? 0.6% = 1.39
? 1.4 (rounded to 1 decimal place).
FirstRanker.com - FirstRanker's Choice
2
GATE CE 2019 Set 2: Questions & Solutions
General Aptitude
1.Daytime temperature in Delhi can ______ 40?C
A. Peak
B. reach
C. get
D. stand
Answer : B
Solution :
Daytime temperature in Delhi can reach 40?C
2.The growth rate of ABC Motors in 2017 was the same ________ XYZ Motors in 2016 .
A. As those of
B. As that off
C. As that of
D. As off
Answer : C
Solution :
The growth rate of ABC Motors in 2017 was the same as that of XYZ Motors in 2016.
3.Suresh wanted to lay a new carpet in his new mansion with an area of 70 55 sq. mts.
However an area of 550 sq. mts had to be left out for flower pots. If the cost of carpet is Rs.
50 per sq. mts, how much money (in Rs.) will be spent by Suresh for the carpet now?
A. Rs. 1,65,000
B. Rs. 1,92,500
C. Rs. 1,27,500
D. Rs. 2,75,000
Answer : A
3
Solution :
Area of mansion = 70 ? 55 = 3850 m
2
Area for flower pots = 550 m
2
? Area left for carpet = 3850 ? 550 = 3300m
2
? Cost = 3300 ? 50 = 165000
4.A retaining wall with measurements 30 m ? 12 m ? 6 m was constructed with bricks of
dimensions 8 cm ? 6 cm. If 60% of the wall consists of bricks used for the construction is
___________ lakhs.
A. 45
B. 30
C. 40
D. 75
Answer : A
Solution :
Volume of wall = 30 ? 12 ? 6 = 2160 m
3
= 2160 ? 106 cm
3
Total volume of bricks required = 2160 ? 106 ? 0.6 cm
3
= 1296 ? 106 cm
3
Volume of one brick = 8 ? 6 ? 6 = 288 cm
3
? No. of bricks required
= 4.5 ? 10
6
= 45 lakhs
5.Hima Das was _______ only Indian athlete to win _____________ gold for India.
A. the, many
B. an, the
C. an, a
4
D. the, a
Answer : D
Solution :
Hima Das was the only Indian athlete to win a gold for India.
6.Population of state X increased by x% and the population of state Y increased by y% from
2001 to 2011. Assume that x is greater than y. Let P be the ratio of the population of state X
to state Y in a given year. The percentage increase in P from 2001 to 2011 is_____________
A. x ? y
B.
C.
D.
Answer : C
Solution :
Let population of X is ?A? in 2001
and Population of Y is ?B? in 2001
? Population of A in 2011
& Population of B in 2011
Given,
5
% increase in P
7.The Newspaper report that over 500 hectares of tribal land spread across 28 tribal
settlements in Mohinitampuram forest division have already been ?alienated?. A top forest
official said, ?First the tribals are duped out of their land holdings. Second, the families thus
rendered landless are often forced to encroach further into the forests?.
On the basis of the information available in the paragraph, _______ is/are responsible for
duping the tribals.
A. The newspaper
B. Landless families
C. forest officials
D. it cannot be inferred who
Answer : D
Solution :
?it cannot be inferred who?
From given information, nobody can be held responsible.
8.An oil tank can be filled by pipe X in 5 hours and pipe Y in 4 hours, each pump working on
its own. When the oil tank is full and the drainage hole is open, the oil is drained in 20 hours.
6
If initially the tank was empty and someone started the two pumps together but left the
drainage hole open, how many hours will it tak for the tank to be filled? (Assume that the rate
of drainage is independent of the head)
A. 2.50
B. 1.50
C. 2.00
D. 4.00
Answer : A
Solution :
Pipe X will fill how much in one hour tank
Pipe Y will fill how much in one hour tank
Drainage will drain out how much water in 1 hour tank
? Total tank filled in one hour
tank gets filled in = 1 hour
? Full (i) tank gets filled in
9.Mohan, the manager, wants his four workers to work in pairs. No paper should work for
more than 5 hours. Ram and Johan have worked together for 5 hours. Krishna and Amir have
7
worked as a team for 2 hours. Krishan does not want to work with Ram whom should mohan
allot to work with Johan, if we wants all the workers to continue working?
A. Amir
B. Krishna
C. Ram
D. None of the three
Answer : B
Solution :
Conditions given:
(i) Ram & John have worked for 5 hours.
(ii) Krishna doesn?t want to work with Ram.
(iii) No pair should work beyond 5 hours.
Hence, Krishna should work with John to satisfy the above conditions.
10.?Popular Hindi fiction, despite ? or perhaps because of ? its wide reach, often does not
appear in our cinema. As ideals that viewers are meant to look up to rather than identify with,
Hindi film protagonisits usually read books of apsirational value: textbooks, English books,
or high value literature?.
Which one of the following CANNOT be inferred from the paragraph above?
A. Textbooks, English books or high literature have apsirational value, but not popular Hindi
fiction
B. People do not look up to writers of textbooks, English book or high value literature
C. Though popular hindi fiction was wide readh, it often does not appear in the movies
D. Protagonists in Hindi movies, being ideals for viewers, read only books of aspirational
value.
Answer : B
Solution :
People do not look up to writers of textbooks, English book or high value literature.
8
Civil Engineering
11.What is curl of the vector field 2x
2
yi + 5z
2
j - 4yzk?
A. - 14zi - 2x
2
k
B. 6zi + 4xj - 2x
2
k
C. 6zi + 8xyj + 2x
2
yk
D. -14zi + 6yj + 2x
2
k
Answer : A
Solution :
12.Analysis of a water sample revealed that the sample contains the following species.
9
Concentrations of which of the species will be required to compute alkalinity?
A.
B.
C.
D.
Answer : A
Solution :
H2CO3 and HCO3
-
never come together
13.The value of the function f(x) is given at n distinct values of x and its value is to be
interpolated at the point x
*
using all the n points. The estimate is obtained first by the
Lagrange polynomial, denoted by IL, and then by the Newton polynomial, denoted by IN.
Which one of the following statements is correct?
A. IL is always greater than IN
B. No definite relation exists between IL and IN.
C. IL is always less than IN
D. IL and IN are always equal
Answer : B
Solution :
Lagrange?s form is more efficient when you have to interpolate several data sets on the same
data point.
Newton?s form is more efficient when you have to interpolate data incrementally. So no
relationship between both.
14.If the fineness modulus of a sample of the fine aggregates is 4.3, the mean size of the
particles in the sample is between
10
A. 150 ?m and 300 ?m
B. 2.36 mm and 4.75 mm
C. 300 ?m and 600 ?m
D. 1.18 mm and 2.36 mm
Answer : D
Solution :
150 ?m, 300 ?m, 600 ?m, 1.18 mm,
2.36 mm, 4.75 mm, 10 mm, 20 mm,
40 mm, 80 mm
150 ? 1
300 ? 2
600 ? 3
4.75 - 6
15.The command area of a canal grows only one crop, i.e., wheat. The base period of wheat
is 120 days and its total water requirement, ?, is 40 cm. If the canal discharge is 2 m
3
/s, the
area, in hectares, rounded off to the nearest integer, which could be irrigated (neglecting all
losses) is ______________
Answer :
Solution :
B = 120 days
? = 0.4 m
and ? = 8.64B/D
? D = 2592 ha per (m
3
/s)
? For 2m
3
/sec water, area will be 5184 ha
11
16.The characteristic compressive strength of concrete required in a project is 25 MPa and
standard deviation in the observed compressive strength expected at site is 4 MPa. The
average compressive strength of cubes tested at different water-cement (w/c) ratios using the
same material as is used for the project is given in the table.
The water-cement ratio (in percent, round off to the lower integer) to be used in the mix
is________
Answer :
Solution :
fck = 25 ; ? = 4 MPa
fm = fck + 1.65? = 31.6 MPa
Using interpolation
= 46.7 (Rounded off to the lowest integer).
17.A solid sphere of radius, r, and made of material with density ?s, is moving through the
atmosphere (constant pressure, p) with a velocity, ?. The net force ONLY due to atmospheric
pressure (Fp) acting on the sphere at any time, t, is
A.
B. Zero
C. ?r
2
p
D. 4?r
2
p
Answer : B
Solution :
Force = area ? P
12
Net force will be zero as pressure acts from all sides.
18.An earthen dam of height H is made of cohesive soil whose cohesion and unit weight are c
and ?, respectively. If the factor of safety against cohesion is Fc, the Taylor?s stability
A.
B.
C.
D.
Answer : C
Solution :
Taylor?s stability number,
19.A closed thin walled tube has thickness, t, mean enclosed area within the boundary of the
centrline of tube?s thickness, Am, and shear stress ?. Torsional moment of resistance, T of the
section would be
A.
B.
13
C.
D.
Answer : A
Solution :
20.For a channel section subjected to a downward vertical shear force at its centroid, which
one of the following represents the correct distribution of shear stress in flange and web?
A.
B.
C.
14
D.
Answer : C
Solution :
Standard result
21.The degree of static indeterminancy of the plane frame is shown in the figure is ________
Answer :
Solution :
Ds = 3C ? R'
C = 6
Ds = (3 ? 6 ? 2) ? 1 (due to hinge)
= 15
15
22.Structural failures considered in the mechanistic method of bituminous pavement design
are
A. Shear and slippage
B. Fatique and Rutting
C. Fatique and shear
D. Rutting and shear
Answer : B
Solution :
As per IRC66:2012
23.Which one of the options contains ONLY primary air pollutants?
A. Ozone and peroxyacetyl nitrate
B. Nitrogen oxides and peroxyacetyl nitrate
C. Hydrocarbons and nitrogen oxides
D. Hydrocarbons and ozone
Answer : C
Solution :
Ozone and PAN are secondary air pollutants.
24.The following inequality is true for all x close to 0.
What is the value of
A. 2
B. 1/2
C. 0
16
D. 1
Answer : A
Solution :
It is form
L?s hospital rule (differentiate)
Putting 0 everywhere ? still form.
Differentiating numerator and denominator again,
25.The velocity field in a flow system is given by v = 2i + (x + y)j + (xyz)k. The acceleration
of the fluid at (1, 1, 2) is
A. j + k
B. 2i + 10 k
C. 4j + 10k
D. 4i + 12 k
Answer : C
Solution :
17
and
= 2 + (x + y) + (xyz)(0) + 0
and
= 2(yz) + (x + y)(xz) + (xyz)(xy) + 0
az = 2(1 ? 2) + (1 + 1)(1 ? 2) + (1 ? 1
? 2) (1?1)
= 10k
Therefore,
26.A steel column is restrained against both translation and rotation at one end and is
restrained only against rotation but free to translate at the other end. Theoretical and design
(IS: 800 ? 2007) values, respectively, of effective length factor of the column are
18
A. 1.0 and 1.0
B. 1.2 and 1.0
C. 1.2 and 1.2
D. 1.0 and 1.2
Answer : D
Solution :
As per IS:800-2007
27.Euclindean norm (length) of the vector [4 ?2 ? 6]
T
is
A. ?48
B. ?24
C. ?12
D. ?56
Answer : D
Solution :
The Euclidean norm assigns to each vector the length of its arrow. Because of this,
the Euclidean norm is often known as the magnitude. So,
Length
28.An inflow hydrograph is routed through a reservoir to produce an outflow hydrograph.
The peak flow of the inflow hydrograph is PI and the time of occurrence of the peak is tI. The
peak flow of the outflow hydrograph is P0 and the time of occurance of the peak is t0. Which
one of the following statements is correct?
A. PI < P0 and tI > t0
B. PI > P0 and tI > t0
C. PI < P0 and tI < t0
D. PI > P0 and tI < t0
Answer : D
Solution :
19
Pl > Po ; tl < to
29.Construction of a new building founded on a clayey soil was completed in January In
January 2014, the average consolidation settlement of the foundation in clay was recorded as
10 mm. The ultimate consolidation settlement was estimated in design as 40 mm.
Considering double drainage to occur at the clayey soil site, the expected consolidation
settlement in January 2019 (in mm, round off to the nearest integer) will be _____________
Answer :
Solution :
Ultimate consolidation = 40 mm
Recorded consolidation = 10 mm
? Total recorded consolidation
? 40 ? 0.375
20
30.The notation ?SC? as per Indian standard Soil Classification System refers to
A. Clayey silt
B. Sandy clay
C. Calyey sand
D. Silty clay
Answer : C
Solution :
SC : clayey sand
31.The speed-density relationship in a mid-block section of a highway follows the
Greenshield?s model. If the free flow speed is vf and the jam density is kj, the maximum flow
observed on this ection is
A.
B.
C. fvkj
D.
Answer : D
Solution :
?(1)
21
32.An anisotropic soil deposit has coefficient of permeability in vertical and horizontal
directions as kz and kx, respectively. For constructing a flow net, the horizontal dimension of
the problem?s geometry is transformed by a multiplying factor of
A.
B.
C.
D.
Answer : C
Solution :
Flow net for anisotropic soil.
?(i)
If we transformed geometry in x direction let x cordinate be transformed to the new
coordinate xt by the transformation.
22
?(ii)
From eq. (i) & (ii),
Hence prove
So, multiplied factor
33.The Laplace transform of sinh (at) is
A.
B.
C.
D.
Answer : C
Solution :
Laplace transform of sinh (at) =
23
34.The data from a closed traverse survey PQRS (run in the clockwise direction) are given in
the table
The closing error for the traverse PQRS (in degrees) is________
Answer :
Solution :
n = 4 (number of sides of closed traverse)
(2n ? 4) ? 90? = 360?
so, error in included angle
= (88 + 92 + 94 + 89) ? 360 = +3?
35.A vehicle is moving on a road of grade +4% at a speed of 20 m/s. Consider the coefficient
of rolling friction as 0.46 and acceleration due to gravity as 10 m/s
2
. On applying brakes to
reach a speed of 10 m/s, the required braking distance (in m, round off to nearest integer)
along the horizontal, is ______.
Answer :
Solution :
Given: grade = +4%
V1 = 20 m/sec.
f = 0.46
g = 10 m/sec.
V1 = 10 m/sec.
24
We know,
36.A broad gauge railway line passes through a horizontal curved section (radius = 875 m) of
length 200 m. The allowable speed on this portion is 100 km/h. For calculating the cant,
consider the gauge as centre-to-centre distance between the rail heads, equal to 1750mm, The
maximum permissible cant (in mm, round off to 1 decimal place) with respect to the centreto-
centre distance between the rail heads is ______.
Answer :
Solution :
Given data:
R = 875 mm
Allowable speed = 100 kmph
Gauge length G = 1750 mm
Allowable cant
37.When a specimen of M25 concrete is loaded to a stress level of 12.5 MPa, a strain of 500
? 10
?6
is recorded. If this load is allowed to stand for a long time, the strain increases to 1000
? 10
?6
. In accordance with provisions of IS: 456-2000, considering the long-term effects, the
effective modulus of elasticity of the concrete (in MPa) is ________
Answer :
Solution :
25
Short term strain = 500 ? 10
?6
Long term strain = 1000 ? 10
?6
So, creep coefficient,
? = 1
Long-term effective modulus
= 12500 N/mm
2
= 12500 MPa
or
38.The probability density function of a continuous random variable distributed uniformly
between x and y (for y > x) is
A.
B. x ? y
C. y ? x
D.
Answer : D
Solution :
Probability density function of a uniformly distributed random variable.
26
39.The uniform arrival and uniform service rates observed on an approach road to a
signalized intersection are 20 and 50 vehicles/minutes, respectively. For this signal, the red
time is 30 s, the effective green time is 30 s, and the cycle length is 60s. Assuming that
initially there are no vehicles in the queue, the average delay per vehicle using the approach
road during a cycle length (in s, round off to 2 decimal places) is _______
Answer :
Solution :
Average delay per vehicle
= 12.5 sec
40.A rolled I-section beam is supported on a 75 mm wide bearing plate as shown in the
figure. Thickness of flange and web of the I-section are 20 mm and 8mm, respectively. Root
27
radius of the I-section is 10mm. Assuming: material yield stress,
fy = 250 MPa and partial safety factor for material, ?mo = 1.10
As per IS: 800-2007, the web bearing strength (in kN, round off to 2 decimal places) of the
beam is _______
Answer :
Solution :
Effective area in bearing = [75 + 2.5 (flange thickness + root radius)] ? 8
= [75 + 2.5 (20 + 10)] ? 8
= 1200 mm
2
so, web bearing strength
= 272.73 kN
41.The critical bending compressive stress in the extreme fibre of a structural steel section is
1000 MPa. It is given that the yield strength of the steel is 250 MPa, width of flange is 250
mm and thickness of flange is 15 mm. As per the provisions of IS: 800-2007, the
nondimensional slendeness ratio of the steel crosssection is
28
A. 0.50
B. 2.00
C. 0.25
D. 0.75
Answer : A
Solution :
Non-dimensional slenderness ratio
42.At the foot of a spillyway, water flows at a depth of 23 cm with a velocity of 8.1 m/s, as
shown in the figure.
The flow enters as an M-3 profile in the long wide rectangular channel with bed
slope and Manning?s n = 0.A hydraulic jump is formed at a certain distance from
the foot of the spillway. Assume the acceleration due to gravity, g = 9.81 m/s
2
. Just before the
hydraulic jump, the depth of flow y1 (in m, round off to 2 decimal places) is _________
Answer :
Solution :
Given data:
y = 0.23 m
V = 8.1 m/sec.
Slope,
29
h = 0.015
g = 9.81 m/sec
2
q = yV = 8.1 ? 0.23
= 1.863 m
3
/sec/m
It is given that flow enters as an M-3 profile in the long wide rectangular channel with bed
slope
From manning equation at M3 profile section.
[for wide channel R = y]
The flow profile will follow normal depth (yn) after jump.
For wide rectangular channel,
Here, yn = y 2 = 1.11 m
30
Again,
? y 1 = 0.417 m < y c [supercritical]
43.Consider the reactor shown in the figure. The concentration (in mg/l) of a compound in
the influent and effluent are C0 and C, flow rate through the reactor is Q m
3
/h respectively.
The compound is degraded in the reactor following the first order reactions. The mixing
condition of the reactor Complete Mix Flow Reactor (CMFR) or a plug-flow reactor (PFR).
The length of the reactor can be adjusted in these two mixing conditions to LCMFR and
LPER while keeping the cross-section of the reactor constant. Assuming steady state and for
C/C0 = 0.8, the value of LCMFR/LPER (round off to 2 decimal places) is _______
Answer :
Solution :
A = constant
Q = AL
For plug flow
[ detention time for plug flow reaction]
For completely mix = C =
[ detention time for completely mix reaction]
31
Also,
44.A series of perpendicular offsets taken from a curved boundary wall to a straight survey
line at an interval of 6 m are 1.22, 1.67, 2.04, 2.34, 2.14, 1.87, and 1.15 m. The area (in m2,
round off to 2 decimal places) boundary by the survey line, curved boundary wall, the first
and the last offsets, determined using Simpson?s rule, is _______.
Answer :
Solution :
Area by simpson?s rule
45.A water treatment plant treats 6000 m
3
of water per day. As a part of the treatment
process, discrete particles are required to be settled in a clarifier. A column test indicates that
an overflow rate of 1.5 m per hour would produce the desired removal of particles through
32
settling in the clarifier having a depth of 3.0 m. The volume of the required clarifier, (in m
3
,
round off to 1 decimal place) would be
Answer :
Solution :
Given data:
Flow rate = 6000 m
3
/day
Over flow rate = 1.5 m/hour
= 1.5 ? 24 m/day = 36 m/day
Flow area
= 166.67 m
2
Volume required for clarifier = Flow area ? depth
= 166.67 ? 3 = 500 m
3
46.A flexible pavement has the following class of loads during a particular hour of the day.
i. 80 buses with 2-axles (each axle load of 40 kN);
ii. 160 trucks with 2-axles (front and rear axle loads of 40 kN and 80 kN, respectively)
The equivalent standard axle load repetitions for this vehicle combination as per IRC:37-2012
would be
A. 320
B. 250
C. 240
D. 180
Answer : D
Solution :
33
= 5 + 5 + 10 + 160
= 180
47.Constant head permeability tests were performed on two soil specimens, S1 and SThe
ratio of height of the two specimens (LS1: LS2) is 1.5, the ratio of the diameter of specimens
(DS1:DS2) is 0.5, and the ratio of the constant head (hs1:hs2) applied on the specimens is 2.0. If
the discharge from both the specimens is equal, the ratio of the permeability of the soil
specimens (ks1:ks2) is ________
Answer :
Solution :
For constant head permeability test,
Q ? discharge
L ? length of specimen
a ? area of cross-section of specimen
h ? constant head
Given,
34
48.A long uniformly distributed load of 10 kN/m and a concentrated load of 60 kN are
moving together on the beam ABCD shown in the figure (not drawn to scale). The relative
positions of the two loads are not fixed. The maximum shear force (in kN, round off to the
nearest integer) caused at the internal hinge B due to the two loads is __________
Answer :
Solution :
35
Maximum
49.A square footing of 2m sides rests on the surface of a homogeneous soil bed having the
properties: cohesion c = 24 kPa, angle of internal friction ? = 25?, and unit weight ? = 18
kN/m
3
. Terzaghi?s bearing capacity factor ? = 25? are Nc = 25.1, Nq = 12.7, N? = 9.7, N?c =
14.8, N?q = 5.6, and N?? = 3.The ultimate bearing capacity of the foundation (in kPa, round
off to 2 decimal places) is ______.
Answer :
Solution :
Here, ? < 29
o
Footing rests on the ground
Hence, q = 0
so,
use, accordingly.
50.The dimensions of a soil sampler are given in the table.
36
For this sampler, the outside clearance ratio (in percent, round off to 2 decimal places) is
_________.
Answer :
Solution :
Given:
D4 = 90 mm
D2 = 100 mm
51.A plane frame shown in the figure (not to scale) has linear elastic springs at node H. The
spring constants are kx = ky = 5 ? 10
5
kN/m
3
and k? = 3 ? 10
5
kNm/rad.
For the externally applied moment of 30 kNm at node F, the rotation (in degrees, round off to
3 decimals) observed in the rotational spring at node H is ________
Answer :
37
Solution :
R ? 3 = 30
? R = 10 kN
From right side of FBD
R ? 3 = K? . ?
= 10
?4
rad = 0.0057
= 0.006 degree
52.Chlorine is used as the disinfectant in a municipal water treatment plant. It achieves 50
percent of disinfection efficiency measured in terms of killing the indicator microorganisms
(E-Coli) in 3 minutes. The minimum time required to achieve 99 percent disinfection
efficiency would be
A. 9.93 minutes
B. 11.93 minutes
C. 21.93 minutes
D. 19.93 minutes
Answer : D
Solution :
Disinfection eff.
38
Again,
? t = 19.93 min.
53.A confined aquifer of 15 m constant thickness is sandwiched between two aquicludes as
shown in the figure (not drawn to scale)
The heads indicated by two piezometers P and Q are 55.2 m and 34.1 m, respectively. The
aquifer has a hydraulic conductivity of 80 m/ day and its effective porosity is 0.If the distance
between the piezometers is 2500 m, the time taken by the water to travel through the aquifer
from piezometer location P to Q (in days, round off to 1 decimal place) is ______.
Answer :
Solution :
Given,
39
= 9.259 ? 10
?4
m/s
h = 55.2 ? 34.1 = 21.1 m
L = 2500 m
n = 0.25
B = 15 m
As per Darcy?s law,
V = ki
Seepage velocity
54.For a plane stress problem, the state of stress at a point P is represented by the stress
element as shown in the figure.
40
By how much angle (?) in degrees the stress element should be rotated in order to get the
planes of maximum shear stress?
A. 26.6
B. 48.3
C. 31.7
D. 13.3
Answer : C
Solution :
41
Coordinates of
= (30, 0)
In ?ABC ,
BC = 80 ? 30 = 50 MPa
AB = 25 MPa
Angle to be rotated
55.The inverse of the matix is
42
A.
B.
C.
D.
Answer : B
Solution :
Det. of matrix, |A| = 2 (12 ? 2) ? 3(16 ? 1) + 4(8 ? 3)
= 20 ? 45 + 20
= ?5
(adj A) = (cof A)'
cof of A11 = 12 ? 2 = 10
43
cof of A12 = ?(16 ? 1) = ?15
cof of A13 = 8 ? 3 = 5
cof of A21 = ?(12 ? 8) = ?4
cof of A22 = (8 ? 4) = 4
cof of A23 = ?(4 ? 3) = ?1
cof of A31 = (3 ? 12) = ?9
cof of A32 = ?(2 ? 16) = 14
cof of A33 = (6 ? 12) = ?6
adj A = (cof A)'
56.Two identical pipes (i.e. having the same length, same diameter, and same roughness) are
used to withdraw water from a reservoir. In the first case, they are attached in series and also
discharge freely into the atmosphere. In the second case, they are attached in parallel and
friction factor is same in both the cases, the ratio of the discharge in the parallel arrangement
to that in the series arrangement (round off to 2 decimal places) is _____
Answer :
Solution :
44
Case (1): Series connection,
then ?(i)
Case (ii) : parallel connection
then, ...(ii)
then from equation (i) and (ii)
57.A camera with a focal length of 20 cm fitted in an aircraft is used for taking vertical aerial
photographs of a terrain. The average elevation of the terrain is 1200 m above mean sea level
(MSL). What is the height above MSL at which an aircraft must fly in order to get the aerial
photographs at a scale of 1:8000?
A. 3200 m
B. 2800 m
45
C. 2600 m
D. 3000 m
Answer : B
Solution :
Given that
f = 0.2 m
h = 1200 m
then,
58.Raw municipal solid waste (MSW) collected from a city contains 70% decomposable
material that can be converted to methane. The water content of the decomposable material is
35%. An elemental anlysis of the decomposable material yields the following mass percent.
C : H : O: N : other = 44 : 6 : 43 : 0.8 : 6.2
The methane production of the decomposable material is governed by the following
stoichiometric relation
CaHbOcNd + nH2O ? mCH4 + sCO2 + dNH3
Given atomic weights: C = 12, H = 1, O = 16, N = The mass of methane produced (in grams,
round off to 1 decimal place) per kg of raw MSW will be _______
Answer :
Solution :
For the MSW, the phase diagram is as follows
46
From the mass percent given,
12a = 44x
b = 6x
16c = 43x
14d = 0.8x
? = 100x
100x = wt of decomposable waste
= 0.455 kg
? a = 16.683, b = 27.3,
c = 12.228, d = 0.26
From the balance of reaction we have
a = m + s ?(A)
b + 2n = 4m + 3d ?(B)
c + n = 2s ?(C)
? 2c + 2n = 4s ?(D)
? b ? 2c = 4m ? 4s + 3d
? m - s = 0.516
47
? m + s = 16.683
? m = 8.6
? Methane produced = 8.6 ? 16 g = 137.6 g
59.In the context of provisions relating to durability of concrete, consider the following
assertion:
Assertion (1): As per IS 456-2000, air entrainment to the extent of 3% to 6% is required for
concrete exposed to marine environment.
Assertion (2): The equivalent alkali content (in terms of Na2O equivalent) for a cement
containing 1% and 0.6% of Na2O and K2O, respectively, is approximately 1.4% (rounded to 1
decimal place).
Which one of the following statements is correct?
A. Assertion (1) is true and Assertion (2) is FALSE
B. Both Assertion (1) and Assertion (2) are TRUE
C. Both Assertion (1) and Assertion 2) are FALSE
D. Assertion (1) is false and Assertion (2) is TRUE
Answer : B
Solution :
As per IS-456, where freezing and thawing actions under wet conditions exit, inhance
durability can be obtained by the use of suitable air entraining admixture.
The entrained air percentage can vary from 4 ? 1 to 5 ? 1 (i.e. 3 to 6%) depending on size of
aggregate. Hence, Assertion (1) is correct.
Equivalent alkali content (in terms of Na2O equivalent)
= Na2O + 0.658 ? K2O
Molecular ratio of Na2O to K2O = 0.658
= 1% + 0.658 ? 0.6% = 1.39
? 1.4 (rounded to 1 decimal place).
48
60.The ordinates, u of a 2-hour unit hydrograph (i.e. for 1 cm of effective rain), for a
catchment are shown in the table.
A 6-hour storm occurs over the catchment such that the effective rainfall intensity is 1
cm/hour for the first two hours, zero for the next two hours, and 0.5 cm/hour for the last two
hours. If the base flow is constant at 5 m
3
/s, the peak flow due to this storm (in m
3
/s, round
off to 1 decimal place) will be ________
Answer :
Solution :
0?2 hr ? total rainfall = 1 ? 2 = 2 cm
2?4 hr ? total rainfall = 0 cm
4?6 hr ? total rainfall = 2 ? 0.5 = 1 cm
Maximum ordinate is 92 m
3
/sec.
Maximum flood discharge = 92 + 5
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2
GATE CE 2019 Set 2: Questions & Solutions
General Aptitude
1.Daytime temperature in Delhi can ______ 40?C
A. Peak
B. reach
C. get
D. stand
Answer : B
Solution :
Daytime temperature in Delhi can reach 40?C
2.The growth rate of ABC Motors in 2017 was the same ________ XYZ Motors in 2016 .
A. As those of
B. As that off
C. As that of
D. As off
Answer : C
Solution :
The growth rate of ABC Motors in 2017 was the same as that of XYZ Motors in 2016.
3.Suresh wanted to lay a new carpet in his new mansion with an area of 70 55 sq. mts.
However an area of 550 sq. mts had to be left out for flower pots. If the cost of carpet is Rs.
50 per sq. mts, how much money (in Rs.) will be spent by Suresh for the carpet now?
A. Rs. 1,65,000
B. Rs. 1,92,500
C. Rs. 1,27,500
D. Rs. 2,75,000
Answer : A
3
Solution :
Area of mansion = 70 ? 55 = 3850 m
2
Area for flower pots = 550 m
2
? Area left for carpet = 3850 ? 550 = 3300m
2
? Cost = 3300 ? 50 = 165000
4.A retaining wall with measurements 30 m ? 12 m ? 6 m was constructed with bricks of
dimensions 8 cm ? 6 cm. If 60% of the wall consists of bricks used for the construction is
___________ lakhs.
A. 45
B. 30
C. 40
D. 75
Answer : A
Solution :
Volume of wall = 30 ? 12 ? 6 = 2160 m
3
= 2160 ? 106 cm
3
Total volume of bricks required = 2160 ? 106 ? 0.6 cm
3
= 1296 ? 106 cm
3
Volume of one brick = 8 ? 6 ? 6 = 288 cm
3
? No. of bricks required
= 4.5 ? 10
6
= 45 lakhs
5.Hima Das was _______ only Indian athlete to win _____________ gold for India.
A. the, many
B. an, the
C. an, a
4
D. the, a
Answer : D
Solution :
Hima Das was the only Indian athlete to win a gold for India.
6.Population of state X increased by x% and the population of state Y increased by y% from
2001 to 2011. Assume that x is greater than y. Let P be the ratio of the population of state X
to state Y in a given year. The percentage increase in P from 2001 to 2011 is_____________
A. x ? y
B.
C.
D.
Answer : C
Solution :
Let population of X is ?A? in 2001
and Population of Y is ?B? in 2001
? Population of A in 2011
& Population of B in 2011
Given,
5
% increase in P
7.The Newspaper report that over 500 hectares of tribal land spread across 28 tribal
settlements in Mohinitampuram forest division have already been ?alienated?. A top forest
official said, ?First the tribals are duped out of their land holdings. Second, the families thus
rendered landless are often forced to encroach further into the forests?.
On the basis of the information available in the paragraph, _______ is/are responsible for
duping the tribals.
A. The newspaper
B. Landless families
C. forest officials
D. it cannot be inferred who
Answer : D
Solution :
?it cannot be inferred who?
From given information, nobody can be held responsible.
8.An oil tank can be filled by pipe X in 5 hours and pipe Y in 4 hours, each pump working on
its own. When the oil tank is full and the drainage hole is open, the oil is drained in 20 hours.
6
If initially the tank was empty and someone started the two pumps together but left the
drainage hole open, how many hours will it tak for the tank to be filled? (Assume that the rate
of drainage is independent of the head)
A. 2.50
B. 1.50
C. 2.00
D. 4.00
Answer : A
Solution :
Pipe X will fill how much in one hour tank
Pipe Y will fill how much in one hour tank
Drainage will drain out how much water in 1 hour tank
? Total tank filled in one hour
tank gets filled in = 1 hour
? Full (i) tank gets filled in
9.Mohan, the manager, wants his four workers to work in pairs. No paper should work for
more than 5 hours. Ram and Johan have worked together for 5 hours. Krishna and Amir have
7
worked as a team for 2 hours. Krishan does not want to work with Ram whom should mohan
allot to work with Johan, if we wants all the workers to continue working?
A. Amir
B. Krishna
C. Ram
D. None of the three
Answer : B
Solution :
Conditions given:
(i) Ram & John have worked for 5 hours.
(ii) Krishna doesn?t want to work with Ram.
(iii) No pair should work beyond 5 hours.
Hence, Krishna should work with John to satisfy the above conditions.
10.?Popular Hindi fiction, despite ? or perhaps because of ? its wide reach, often does not
appear in our cinema. As ideals that viewers are meant to look up to rather than identify with,
Hindi film protagonisits usually read books of apsirational value: textbooks, English books,
or high value literature?.
Which one of the following CANNOT be inferred from the paragraph above?
A. Textbooks, English books or high literature have apsirational value, but not popular Hindi
fiction
B. People do not look up to writers of textbooks, English book or high value literature
C. Though popular hindi fiction was wide readh, it often does not appear in the movies
D. Protagonists in Hindi movies, being ideals for viewers, read only books of aspirational
value.
Answer : B
Solution :
People do not look up to writers of textbooks, English book or high value literature.
8
Civil Engineering
11.What is curl of the vector field 2x
2
yi + 5z
2
j - 4yzk?
A. - 14zi - 2x
2
k
B. 6zi + 4xj - 2x
2
k
C. 6zi + 8xyj + 2x
2
yk
D. -14zi + 6yj + 2x
2
k
Answer : A
Solution :
12.Analysis of a water sample revealed that the sample contains the following species.
9
Concentrations of which of the species will be required to compute alkalinity?
A.
B.
C.
D.
Answer : A
Solution :
H2CO3 and HCO3
-
never come together
13.The value of the function f(x) is given at n distinct values of x and its value is to be
interpolated at the point x
*
using all the n points. The estimate is obtained first by the
Lagrange polynomial, denoted by IL, and then by the Newton polynomial, denoted by IN.
Which one of the following statements is correct?
A. IL is always greater than IN
B. No definite relation exists between IL and IN.
C. IL is always less than IN
D. IL and IN are always equal
Answer : B
Solution :
Lagrange?s form is more efficient when you have to interpolate several data sets on the same
data point.
Newton?s form is more efficient when you have to interpolate data incrementally. So no
relationship between both.
14.If the fineness modulus of a sample of the fine aggregates is 4.3, the mean size of the
particles in the sample is between
10
A. 150 ?m and 300 ?m
B. 2.36 mm and 4.75 mm
C. 300 ?m and 600 ?m
D. 1.18 mm and 2.36 mm
Answer : D
Solution :
150 ?m, 300 ?m, 600 ?m, 1.18 mm,
2.36 mm, 4.75 mm, 10 mm, 20 mm,
40 mm, 80 mm
150 ? 1
300 ? 2
600 ? 3
4.75 - 6
15.The command area of a canal grows only one crop, i.e., wheat. The base period of wheat
is 120 days and its total water requirement, ?, is 40 cm. If the canal discharge is 2 m
3
/s, the
area, in hectares, rounded off to the nearest integer, which could be irrigated (neglecting all
losses) is ______________
Answer :
Solution :
B = 120 days
? = 0.4 m
and ? = 8.64B/D
? D = 2592 ha per (m
3
/s)
? For 2m
3
/sec water, area will be 5184 ha
11
16.The characteristic compressive strength of concrete required in a project is 25 MPa and
standard deviation in the observed compressive strength expected at site is 4 MPa. The
average compressive strength of cubes tested at different water-cement (w/c) ratios using the
same material as is used for the project is given in the table.
The water-cement ratio (in percent, round off to the lower integer) to be used in the mix
is________
Answer :
Solution :
fck = 25 ; ? = 4 MPa
fm = fck + 1.65? = 31.6 MPa
Using interpolation
= 46.7 (Rounded off to the lowest integer).
17.A solid sphere of radius, r, and made of material with density ?s, is moving through the
atmosphere (constant pressure, p) with a velocity, ?. The net force ONLY due to atmospheric
pressure (Fp) acting on the sphere at any time, t, is
A.
B. Zero
C. ?r
2
p
D. 4?r
2
p
Answer : B
Solution :
Force = area ? P
12
Net force will be zero as pressure acts from all sides.
18.An earthen dam of height H is made of cohesive soil whose cohesion and unit weight are c
and ?, respectively. If the factor of safety against cohesion is Fc, the Taylor?s stability
A.
B.
C.
D.
Answer : C
Solution :
Taylor?s stability number,
19.A closed thin walled tube has thickness, t, mean enclosed area within the boundary of the
centrline of tube?s thickness, Am, and shear stress ?. Torsional moment of resistance, T of the
section would be
A.
B.
13
C.
D.
Answer : A
Solution :
20.For a channel section subjected to a downward vertical shear force at its centroid, which
one of the following represents the correct distribution of shear stress in flange and web?
A.
B.
C.
14
D.
Answer : C
Solution :
Standard result
21.The degree of static indeterminancy of the plane frame is shown in the figure is ________
Answer :
Solution :
Ds = 3C ? R'
C = 6
Ds = (3 ? 6 ? 2) ? 1 (due to hinge)
= 15
15
22.Structural failures considered in the mechanistic method of bituminous pavement design
are
A. Shear and slippage
B. Fatique and Rutting
C. Fatique and shear
D. Rutting and shear
Answer : B
Solution :
As per IRC66:2012
23.Which one of the options contains ONLY primary air pollutants?
A. Ozone and peroxyacetyl nitrate
B. Nitrogen oxides and peroxyacetyl nitrate
C. Hydrocarbons and nitrogen oxides
D. Hydrocarbons and ozone
Answer : C
Solution :
Ozone and PAN are secondary air pollutants.
24.The following inequality is true for all x close to 0.
What is the value of
A. 2
B. 1/2
C. 0
16
D. 1
Answer : A
Solution :
It is form
L?s hospital rule (differentiate)
Putting 0 everywhere ? still form.
Differentiating numerator and denominator again,
25.The velocity field in a flow system is given by v = 2i + (x + y)j + (xyz)k. The acceleration
of the fluid at (1, 1, 2) is
A. j + k
B. 2i + 10 k
C. 4j + 10k
D. 4i + 12 k
Answer : C
Solution :
17
and
= 2 + (x + y) + (xyz)(0) + 0
and
= 2(yz) + (x + y)(xz) + (xyz)(xy) + 0
az = 2(1 ? 2) + (1 + 1)(1 ? 2) + (1 ? 1
? 2) (1?1)
= 10k
Therefore,
26.A steel column is restrained against both translation and rotation at one end and is
restrained only against rotation but free to translate at the other end. Theoretical and design
(IS: 800 ? 2007) values, respectively, of effective length factor of the column are
18
A. 1.0 and 1.0
B. 1.2 and 1.0
C. 1.2 and 1.2
D. 1.0 and 1.2
Answer : D
Solution :
As per IS:800-2007
27.Euclindean norm (length) of the vector [4 ?2 ? 6]
T
is
A. ?48
B. ?24
C. ?12
D. ?56
Answer : D
Solution :
The Euclidean norm assigns to each vector the length of its arrow. Because of this,
the Euclidean norm is often known as the magnitude. So,
Length
28.An inflow hydrograph is routed through a reservoir to produce an outflow hydrograph.
The peak flow of the inflow hydrograph is PI and the time of occurrence of the peak is tI. The
peak flow of the outflow hydrograph is P0 and the time of occurance of the peak is t0. Which
one of the following statements is correct?
A. PI < P0 and tI > t0
B. PI > P0 and tI > t0
C. PI < P0 and tI < t0
D. PI > P0 and tI < t0
Answer : D
Solution :
19
Pl > Po ; tl < to
29.Construction of a new building founded on a clayey soil was completed in January In
January 2014, the average consolidation settlement of the foundation in clay was recorded as
10 mm. The ultimate consolidation settlement was estimated in design as 40 mm.
Considering double drainage to occur at the clayey soil site, the expected consolidation
settlement in January 2019 (in mm, round off to the nearest integer) will be _____________
Answer :
Solution :
Ultimate consolidation = 40 mm
Recorded consolidation = 10 mm
? Total recorded consolidation
? 40 ? 0.375
20
30.The notation ?SC? as per Indian standard Soil Classification System refers to
A. Clayey silt
B. Sandy clay
C. Calyey sand
D. Silty clay
Answer : C
Solution :
SC : clayey sand
31.The speed-density relationship in a mid-block section of a highway follows the
Greenshield?s model. If the free flow speed is vf and the jam density is kj, the maximum flow
observed on this ection is
A.
B.
C. fvkj
D.
Answer : D
Solution :
?(1)
21
32.An anisotropic soil deposit has coefficient of permeability in vertical and horizontal
directions as kz and kx, respectively. For constructing a flow net, the horizontal dimension of
the problem?s geometry is transformed by a multiplying factor of
A.
B.
C.
D.
Answer : C
Solution :
Flow net for anisotropic soil.
?(i)
If we transformed geometry in x direction let x cordinate be transformed to the new
coordinate xt by the transformation.
22
?(ii)
From eq. (i) & (ii),
Hence prove
So, multiplied factor
33.The Laplace transform of sinh (at) is
A.
B.
C.
D.
Answer : C
Solution :
Laplace transform of sinh (at) =
23
34.The data from a closed traverse survey PQRS (run in the clockwise direction) are given in
the table
The closing error for the traverse PQRS (in degrees) is________
Answer :
Solution :
n = 4 (number of sides of closed traverse)
(2n ? 4) ? 90? = 360?
so, error in included angle
= (88 + 92 + 94 + 89) ? 360 = +3?
35.A vehicle is moving on a road of grade +4% at a speed of 20 m/s. Consider the coefficient
of rolling friction as 0.46 and acceleration due to gravity as 10 m/s
2
. On applying brakes to
reach a speed of 10 m/s, the required braking distance (in m, round off to nearest integer)
along the horizontal, is ______.
Answer :
Solution :
Given: grade = +4%
V1 = 20 m/sec.
f = 0.46
g = 10 m/sec.
V1 = 10 m/sec.
24
We know,
36.A broad gauge railway line passes through a horizontal curved section (radius = 875 m) of
length 200 m. The allowable speed on this portion is 100 km/h. For calculating the cant,
consider the gauge as centre-to-centre distance between the rail heads, equal to 1750mm, The
maximum permissible cant (in mm, round off to 1 decimal place) with respect to the centreto-
centre distance between the rail heads is ______.
Answer :
Solution :
Given data:
R = 875 mm
Allowable speed = 100 kmph
Gauge length G = 1750 mm
Allowable cant
37.When a specimen of M25 concrete is loaded to a stress level of 12.5 MPa, a strain of 500
? 10
?6
is recorded. If this load is allowed to stand for a long time, the strain increases to 1000
? 10
?6
. In accordance with provisions of IS: 456-2000, considering the long-term effects, the
effective modulus of elasticity of the concrete (in MPa) is ________
Answer :
Solution :
25
Short term strain = 500 ? 10
?6
Long term strain = 1000 ? 10
?6
So, creep coefficient,
? = 1
Long-term effective modulus
= 12500 N/mm
2
= 12500 MPa
or
38.The probability density function of a continuous random variable distributed uniformly
between x and y (for y > x) is
A.
B. x ? y
C. y ? x
D.
Answer : D
Solution :
Probability density function of a uniformly distributed random variable.
26
39.The uniform arrival and uniform service rates observed on an approach road to a
signalized intersection are 20 and 50 vehicles/minutes, respectively. For this signal, the red
time is 30 s, the effective green time is 30 s, and the cycle length is 60s. Assuming that
initially there are no vehicles in the queue, the average delay per vehicle using the approach
road during a cycle length (in s, round off to 2 decimal places) is _______
Answer :
Solution :
Average delay per vehicle
= 12.5 sec
40.A rolled I-section beam is supported on a 75 mm wide bearing plate as shown in the
figure. Thickness of flange and web of the I-section are 20 mm and 8mm, respectively. Root
27
radius of the I-section is 10mm. Assuming: material yield stress,
fy = 250 MPa and partial safety factor for material, ?mo = 1.10
As per IS: 800-2007, the web bearing strength (in kN, round off to 2 decimal places) of the
beam is _______
Answer :
Solution :
Effective area in bearing = [75 + 2.5 (flange thickness + root radius)] ? 8
= [75 + 2.5 (20 + 10)] ? 8
= 1200 mm
2
so, web bearing strength
= 272.73 kN
41.The critical bending compressive stress in the extreme fibre of a structural steel section is
1000 MPa. It is given that the yield strength of the steel is 250 MPa, width of flange is 250
mm and thickness of flange is 15 mm. As per the provisions of IS: 800-2007, the
nondimensional slendeness ratio of the steel crosssection is
28
A. 0.50
B. 2.00
C. 0.25
D. 0.75
Answer : A
Solution :
Non-dimensional slenderness ratio
42.At the foot of a spillyway, water flows at a depth of 23 cm with a velocity of 8.1 m/s, as
shown in the figure.
The flow enters as an M-3 profile in the long wide rectangular channel with bed
slope and Manning?s n = 0.A hydraulic jump is formed at a certain distance from
the foot of the spillway. Assume the acceleration due to gravity, g = 9.81 m/s
2
. Just before the
hydraulic jump, the depth of flow y1 (in m, round off to 2 decimal places) is _________
Answer :
Solution :
Given data:
y = 0.23 m
V = 8.1 m/sec.
Slope,
29
h = 0.015
g = 9.81 m/sec
2
q = yV = 8.1 ? 0.23
= 1.863 m
3
/sec/m
It is given that flow enters as an M-3 profile in the long wide rectangular channel with bed
slope
From manning equation at M3 profile section.
[for wide channel R = y]
The flow profile will follow normal depth (yn) after jump.
For wide rectangular channel,
Here, yn = y 2 = 1.11 m
30
Again,
? y 1 = 0.417 m < y c [supercritical]
43.Consider the reactor shown in the figure. The concentration (in mg/l) of a compound in
the influent and effluent are C0 and C, flow rate through the reactor is Q m
3
/h respectively.
The compound is degraded in the reactor following the first order reactions. The mixing
condition of the reactor Complete Mix Flow Reactor (CMFR) or a plug-flow reactor (PFR).
The length of the reactor can be adjusted in these two mixing conditions to LCMFR and
LPER while keeping the cross-section of the reactor constant. Assuming steady state and for
C/C0 = 0.8, the value of LCMFR/LPER (round off to 2 decimal places) is _______
Answer :
Solution :
A = constant
Q = AL
For plug flow
[ detention time for plug flow reaction]
For completely mix = C =
[ detention time for completely mix reaction]
31
Also,
44.A series of perpendicular offsets taken from a curved boundary wall to a straight survey
line at an interval of 6 m are 1.22, 1.67, 2.04, 2.34, 2.14, 1.87, and 1.15 m. The area (in m2,
round off to 2 decimal places) boundary by the survey line, curved boundary wall, the first
and the last offsets, determined using Simpson?s rule, is _______.
Answer :
Solution :
Area by simpson?s rule
45.A water treatment plant treats 6000 m
3
of water per day. As a part of the treatment
process, discrete particles are required to be settled in a clarifier. A column test indicates that
an overflow rate of 1.5 m per hour would produce the desired removal of particles through
32
settling in the clarifier having a depth of 3.0 m. The volume of the required clarifier, (in m
3
,
round off to 1 decimal place) would be
Answer :
Solution :
Given data:
Flow rate = 6000 m
3
/day
Over flow rate = 1.5 m/hour
= 1.5 ? 24 m/day = 36 m/day
Flow area
= 166.67 m
2
Volume required for clarifier = Flow area ? depth
= 166.67 ? 3 = 500 m
3
46.A flexible pavement has the following class of loads during a particular hour of the day.
i. 80 buses with 2-axles (each axle load of 40 kN);
ii. 160 trucks with 2-axles (front and rear axle loads of 40 kN and 80 kN, respectively)
The equivalent standard axle load repetitions for this vehicle combination as per IRC:37-2012
would be
A. 320
B. 250
C. 240
D. 180
Answer : D
Solution :
33
= 5 + 5 + 10 + 160
= 180
47.Constant head permeability tests were performed on two soil specimens, S1 and SThe
ratio of height of the two specimens (LS1: LS2) is 1.5, the ratio of the diameter of specimens
(DS1:DS2) is 0.5, and the ratio of the constant head (hs1:hs2) applied on the specimens is 2.0. If
the discharge from both the specimens is equal, the ratio of the permeability of the soil
specimens (ks1:ks2) is ________
Answer :
Solution :
For constant head permeability test,
Q ? discharge
L ? length of specimen
a ? area of cross-section of specimen
h ? constant head
Given,
34
48.A long uniformly distributed load of 10 kN/m and a concentrated load of 60 kN are
moving together on the beam ABCD shown in the figure (not drawn to scale). The relative
positions of the two loads are not fixed. The maximum shear force (in kN, round off to the
nearest integer) caused at the internal hinge B due to the two loads is __________
Answer :
Solution :
35
Maximum
49.A square footing of 2m sides rests on the surface of a homogeneous soil bed having the
properties: cohesion c = 24 kPa, angle of internal friction ? = 25?, and unit weight ? = 18
kN/m
3
. Terzaghi?s bearing capacity factor ? = 25? are Nc = 25.1, Nq = 12.7, N? = 9.7, N?c =
14.8, N?q = 5.6, and N?? = 3.The ultimate bearing capacity of the foundation (in kPa, round
off to 2 decimal places) is ______.
Answer :
Solution :
Here, ? < 29
o
Footing rests on the ground
Hence, q = 0
so,
use, accordingly.
50.The dimensions of a soil sampler are given in the table.
36
For this sampler, the outside clearance ratio (in percent, round off to 2 decimal places) is
_________.
Answer :
Solution :
Given:
D4 = 90 mm
D2 = 100 mm
51.A plane frame shown in the figure (not to scale) has linear elastic springs at node H. The
spring constants are kx = ky = 5 ? 10
5
kN/m
3
and k? = 3 ? 10
5
kNm/rad.
For the externally applied moment of 30 kNm at node F, the rotation (in degrees, round off to
3 decimals) observed in the rotational spring at node H is ________
Answer :
37
Solution :
R ? 3 = 30
? R = 10 kN
From right side of FBD
R ? 3 = K? . ?
= 10
?4
rad = 0.0057
= 0.006 degree
52.Chlorine is used as the disinfectant in a municipal water treatment plant. It achieves 50
percent of disinfection efficiency measured in terms of killing the indicator microorganisms
(E-Coli) in 3 minutes. The minimum time required to achieve 99 percent disinfection
efficiency would be
A. 9.93 minutes
B. 11.93 minutes
C. 21.93 minutes
D. 19.93 minutes
Answer : D
Solution :
Disinfection eff.
38
Again,
? t = 19.93 min.
53.A confined aquifer of 15 m constant thickness is sandwiched between two aquicludes as
shown in the figure (not drawn to scale)
The heads indicated by two piezometers P and Q are 55.2 m and 34.1 m, respectively. The
aquifer has a hydraulic conductivity of 80 m/ day and its effective porosity is 0.If the distance
between the piezometers is 2500 m, the time taken by the water to travel through the aquifer
from piezometer location P to Q (in days, round off to 1 decimal place) is ______.
Answer :
Solution :
Given,
39
= 9.259 ? 10
?4
m/s
h = 55.2 ? 34.1 = 21.1 m
L = 2500 m
n = 0.25
B = 15 m
As per Darcy?s law,
V = ki
Seepage velocity
54.For a plane stress problem, the state of stress at a point P is represented by the stress
element as shown in the figure.
40
By how much angle (?) in degrees the stress element should be rotated in order to get the
planes of maximum shear stress?
A. 26.6
B. 48.3
C. 31.7
D. 13.3
Answer : C
Solution :
41
Coordinates of
= (30, 0)
In ?ABC ,
BC = 80 ? 30 = 50 MPa
AB = 25 MPa
Angle to be rotated
55.The inverse of the matix is
42
A.
B.
C.
D.
Answer : B
Solution :
Det. of matrix, |A| = 2 (12 ? 2) ? 3(16 ? 1) + 4(8 ? 3)
= 20 ? 45 + 20
= ?5
(adj A) = (cof A)'
cof of A11 = 12 ? 2 = 10
43
cof of A12 = ?(16 ? 1) = ?15
cof of A13 = 8 ? 3 = 5
cof of A21 = ?(12 ? 8) = ?4
cof of A22 = (8 ? 4) = 4
cof of A23 = ?(4 ? 3) = ?1
cof of A31 = (3 ? 12) = ?9
cof of A32 = ?(2 ? 16) = 14
cof of A33 = (6 ? 12) = ?6
adj A = (cof A)'
56.Two identical pipes (i.e. having the same length, same diameter, and same roughness) are
used to withdraw water from a reservoir. In the first case, they are attached in series and also
discharge freely into the atmosphere. In the second case, they are attached in parallel and
friction factor is same in both the cases, the ratio of the discharge in the parallel arrangement
to that in the series arrangement (round off to 2 decimal places) is _____
Answer :
Solution :
44
Case (1): Series connection,
then ?(i)
Case (ii) : parallel connection
then, ...(ii)
then from equation (i) and (ii)
57.A camera with a focal length of 20 cm fitted in an aircraft is used for taking vertical aerial
photographs of a terrain. The average elevation of the terrain is 1200 m above mean sea level
(MSL). What is the height above MSL at which an aircraft must fly in order to get the aerial
photographs at a scale of 1:8000?
A. 3200 m
B. 2800 m
45
C. 2600 m
D. 3000 m
Answer : B
Solution :
Given that
f = 0.2 m
h = 1200 m
then,
58.Raw municipal solid waste (MSW) collected from a city contains 70% decomposable
material that can be converted to methane. The water content of the decomposable material is
35%. An elemental anlysis of the decomposable material yields the following mass percent.
C : H : O: N : other = 44 : 6 : 43 : 0.8 : 6.2
The methane production of the decomposable material is governed by the following
stoichiometric relation
CaHbOcNd + nH2O ? mCH4 + sCO2 + dNH3
Given atomic weights: C = 12, H = 1, O = 16, N = The mass of methane produced (in grams,
round off to 1 decimal place) per kg of raw MSW will be _______
Answer :
Solution :
For the MSW, the phase diagram is as follows
46
From the mass percent given,
12a = 44x
b = 6x
16c = 43x
14d = 0.8x
? = 100x
100x = wt of decomposable waste
= 0.455 kg
? a = 16.683, b = 27.3,
c = 12.228, d = 0.26
From the balance of reaction we have
a = m + s ?(A)
b + 2n = 4m + 3d ?(B)
c + n = 2s ?(C)
? 2c + 2n = 4s ?(D)
? b ? 2c = 4m ? 4s + 3d
? m - s = 0.516
47
? m + s = 16.683
? m = 8.6
? Methane produced = 8.6 ? 16 g = 137.6 g
59.In the context of provisions relating to durability of concrete, consider the following
assertion:
Assertion (1): As per IS 456-2000, air entrainment to the extent of 3% to 6% is required for
concrete exposed to marine environment.
Assertion (2): The equivalent alkali content (in terms of Na2O equivalent) for a cement
containing 1% and 0.6% of Na2O and K2O, respectively, is approximately 1.4% (rounded to 1
decimal place).
Which one of the following statements is correct?
A. Assertion (1) is true and Assertion (2) is FALSE
B. Both Assertion (1) and Assertion (2) are TRUE
C. Both Assertion (1) and Assertion 2) are FALSE
D. Assertion (1) is false and Assertion (2) is TRUE
Answer : B
Solution :
As per IS-456, where freezing and thawing actions under wet conditions exit, inhance
durability can be obtained by the use of suitable air entraining admixture.
The entrained air percentage can vary from 4 ? 1 to 5 ? 1 (i.e. 3 to 6%) depending on size of
aggregate. Hence, Assertion (1) is correct.
Equivalent alkali content (in terms of Na2O equivalent)
= Na2O + 0.658 ? K2O
Molecular ratio of Na2O to K2O = 0.658
= 1% + 0.658 ? 0.6% = 1.39
? 1.4 (rounded to 1 decimal place).
48
60.The ordinates, u of a 2-hour unit hydrograph (i.e. for 1 cm of effective rain), for a
catchment are shown in the table.
A 6-hour storm occurs over the catchment such that the effective rainfall intensity is 1
cm/hour for the first two hours, zero for the next two hours, and 0.5 cm/hour for the last two
hours. If the base flow is constant at 5 m
3
/s, the peak flow due to this storm (in m
3
/s, round
off to 1 decimal place) will be ________
Answer :
Solution :
0?2 hr ? total rainfall = 1 ? 2 = 2 cm
2?4 hr ? total rainfall = 0 cm
4?6 hr ? total rainfall = 2 ? 0.5 = 1 cm
Maximum ordinate is 92 m
3
/sec.
Maximum flood discharge = 92 + 5
49
= 97 m
3
/sec
61.The speed-density relationship of a highway is given as
u = 100 ? 0.5 k
where, u = speed in km per hour, k = density in vehicles per km. The maximum flow (in
vehicles per hour, round off to the nearest integer) is ______
Answer :
Solution :
Given that,
u = 100 ? 0.5 k
Maximum flow
u = uf (1- k / kj )
u = 100(1- (0.5k/100))
= 100(1- k/200)
therefore, uf = 100 and kj = 200
so, maximum flow
= 5000 vehicles/hr
62.Consider the hemi-spherical tank of radius 13 m as shown in the figure (not drawn to
scale). What is the volume of water (in m
3
) when the depth of water at the centre of the tank
is 6 m?
FirstRanker.com - FirstRanker's Choice
2
GATE CE 2019 Set 2: Questions & Solutions
General Aptitude
1.Daytime temperature in Delhi can ______ 40?C
A. Peak
B. reach
C. get
D. stand
Answer : B
Solution :
Daytime temperature in Delhi can reach 40?C
2.The growth rate of ABC Motors in 2017 was the same ________ XYZ Motors in 2016 .
A. As those of
B. As that off
C. As that of
D. As off
Answer : C
Solution :
The growth rate of ABC Motors in 2017 was the same as that of XYZ Motors in 2016.
3.Suresh wanted to lay a new carpet in his new mansion with an area of 70 55 sq. mts.
However an area of 550 sq. mts had to be left out for flower pots. If the cost of carpet is Rs.
50 per sq. mts, how much money (in Rs.) will be spent by Suresh for the carpet now?
A. Rs. 1,65,000
B. Rs. 1,92,500
C. Rs. 1,27,500
D. Rs. 2,75,000
Answer : A
3
Solution :
Area of mansion = 70 ? 55 = 3850 m
2
Area for flower pots = 550 m
2
? Area left for carpet = 3850 ? 550 = 3300m
2
? Cost = 3300 ? 50 = 165000
4.A retaining wall with measurements 30 m ? 12 m ? 6 m was constructed with bricks of
dimensions 8 cm ? 6 cm. If 60% of the wall consists of bricks used for the construction is
___________ lakhs.
A. 45
B. 30
C. 40
D. 75
Answer : A
Solution :
Volume of wall = 30 ? 12 ? 6 = 2160 m
3
= 2160 ? 106 cm
3
Total volume of bricks required = 2160 ? 106 ? 0.6 cm
3
= 1296 ? 106 cm
3
Volume of one brick = 8 ? 6 ? 6 = 288 cm
3
? No. of bricks required
= 4.5 ? 10
6
= 45 lakhs
5.Hima Das was _______ only Indian athlete to win _____________ gold for India.
A. the, many
B. an, the
C. an, a
4
D. the, a
Answer : D
Solution :
Hima Das was the only Indian athlete to win a gold for India.
6.Population of state X increased by x% and the population of state Y increased by y% from
2001 to 2011. Assume that x is greater than y. Let P be the ratio of the population of state X
to state Y in a given year. The percentage increase in P from 2001 to 2011 is_____________
A. x ? y
B.
C.
D.
Answer : C
Solution :
Let population of X is ?A? in 2001
and Population of Y is ?B? in 2001
? Population of A in 2011
& Population of B in 2011
Given,
5
% increase in P
7.The Newspaper report that over 500 hectares of tribal land spread across 28 tribal
settlements in Mohinitampuram forest division have already been ?alienated?. A top forest
official said, ?First the tribals are duped out of their land holdings. Second, the families thus
rendered landless are often forced to encroach further into the forests?.
On the basis of the information available in the paragraph, _______ is/are responsible for
duping the tribals.
A. The newspaper
B. Landless families
C. forest officials
D. it cannot be inferred who
Answer : D
Solution :
?it cannot be inferred who?
From given information, nobody can be held responsible.
8.An oil tank can be filled by pipe X in 5 hours and pipe Y in 4 hours, each pump working on
its own. When the oil tank is full and the drainage hole is open, the oil is drained in 20 hours.
6
If initially the tank was empty and someone started the two pumps together but left the
drainage hole open, how many hours will it tak for the tank to be filled? (Assume that the rate
of drainage is independent of the head)
A. 2.50
B. 1.50
C. 2.00
D. 4.00
Answer : A
Solution :
Pipe X will fill how much in one hour tank
Pipe Y will fill how much in one hour tank
Drainage will drain out how much water in 1 hour tank
? Total tank filled in one hour
tank gets filled in = 1 hour
? Full (i) tank gets filled in
9.Mohan, the manager, wants his four workers to work in pairs. No paper should work for
more than 5 hours. Ram and Johan have worked together for 5 hours. Krishna and Amir have
7
worked as a team for 2 hours. Krishan does not want to work with Ram whom should mohan
allot to work with Johan, if we wants all the workers to continue working?
A. Amir
B. Krishna
C. Ram
D. None of the three
Answer : B
Solution :
Conditions given:
(i) Ram & John have worked for 5 hours.
(ii) Krishna doesn?t want to work with Ram.
(iii) No pair should work beyond 5 hours.
Hence, Krishna should work with John to satisfy the above conditions.
10.?Popular Hindi fiction, despite ? or perhaps because of ? its wide reach, often does not
appear in our cinema. As ideals that viewers are meant to look up to rather than identify with,
Hindi film protagonisits usually read books of apsirational value: textbooks, English books,
or high value literature?.
Which one of the following CANNOT be inferred from the paragraph above?
A. Textbooks, English books or high literature have apsirational value, but not popular Hindi
fiction
B. People do not look up to writers of textbooks, English book or high value literature
C. Though popular hindi fiction was wide readh, it often does not appear in the movies
D. Protagonists in Hindi movies, being ideals for viewers, read only books of aspirational
value.
Answer : B
Solution :
People do not look up to writers of textbooks, English book or high value literature.
8
Civil Engineering
11.What is curl of the vector field 2x
2
yi + 5z
2
j - 4yzk?
A. - 14zi - 2x
2
k
B. 6zi + 4xj - 2x
2
k
C. 6zi + 8xyj + 2x
2
yk
D. -14zi + 6yj + 2x
2
k
Answer : A
Solution :
12.Analysis of a water sample revealed that the sample contains the following species.
9
Concentrations of which of the species will be required to compute alkalinity?
A.
B.
C.
D.
Answer : A
Solution :
H2CO3 and HCO3
-
never come together
13.The value of the function f(x) is given at n distinct values of x and its value is to be
interpolated at the point x
*
using all the n points. The estimate is obtained first by the
Lagrange polynomial, denoted by IL, and then by the Newton polynomial, denoted by IN.
Which one of the following statements is correct?
A. IL is always greater than IN
B. No definite relation exists between IL and IN.
C. IL is always less than IN
D. IL and IN are always equal
Answer : B
Solution :
Lagrange?s form is more efficient when you have to interpolate several data sets on the same
data point.
Newton?s form is more efficient when you have to interpolate data incrementally. So no
relationship between both.
14.If the fineness modulus of a sample of the fine aggregates is 4.3, the mean size of the
particles in the sample is between
10
A. 150 ?m and 300 ?m
B. 2.36 mm and 4.75 mm
C. 300 ?m and 600 ?m
D. 1.18 mm and 2.36 mm
Answer : D
Solution :
150 ?m, 300 ?m, 600 ?m, 1.18 mm,
2.36 mm, 4.75 mm, 10 mm, 20 mm,
40 mm, 80 mm
150 ? 1
300 ? 2
600 ? 3
4.75 - 6
15.The command area of a canal grows only one crop, i.e., wheat. The base period of wheat
is 120 days and its total water requirement, ?, is 40 cm. If the canal discharge is 2 m
3
/s, the
area, in hectares, rounded off to the nearest integer, which could be irrigated (neglecting all
losses) is ______________
Answer :
Solution :
B = 120 days
? = 0.4 m
and ? = 8.64B/D
? D = 2592 ha per (m
3
/s)
? For 2m
3
/sec water, area will be 5184 ha
11
16.The characteristic compressive strength of concrete required in a project is 25 MPa and
standard deviation in the observed compressive strength expected at site is 4 MPa. The
average compressive strength of cubes tested at different water-cement (w/c) ratios using the
same material as is used for the project is given in the table.
The water-cement ratio (in percent, round off to the lower integer) to be used in the mix
is________
Answer :
Solution :
fck = 25 ; ? = 4 MPa
fm = fck + 1.65? = 31.6 MPa
Using interpolation
= 46.7 (Rounded off to the lowest integer).
17.A solid sphere of radius, r, and made of material with density ?s, is moving through the
atmosphere (constant pressure, p) with a velocity, ?. The net force ONLY due to atmospheric
pressure (Fp) acting on the sphere at any time, t, is
A.
B. Zero
C. ?r
2
p
D. 4?r
2
p
Answer : B
Solution :
Force = area ? P
12
Net force will be zero as pressure acts from all sides.
18.An earthen dam of height H is made of cohesive soil whose cohesion and unit weight are c
and ?, respectively. If the factor of safety against cohesion is Fc, the Taylor?s stability
A.
B.
C.
D.
Answer : C
Solution :
Taylor?s stability number,
19.A closed thin walled tube has thickness, t, mean enclosed area within the boundary of the
centrline of tube?s thickness, Am, and shear stress ?. Torsional moment of resistance, T of the
section would be
A.
B.
13
C.
D.
Answer : A
Solution :
20.For a channel section subjected to a downward vertical shear force at its centroid, which
one of the following represents the correct distribution of shear stress in flange and web?
A.
B.
C.
14
D.
Answer : C
Solution :
Standard result
21.The degree of static indeterminancy of the plane frame is shown in the figure is ________
Answer :
Solution :
Ds = 3C ? R'
C = 6
Ds = (3 ? 6 ? 2) ? 1 (due to hinge)
= 15
15
22.Structural failures considered in the mechanistic method of bituminous pavement design
are
A. Shear and slippage
B. Fatique and Rutting
C. Fatique and shear
D. Rutting and shear
Answer : B
Solution :
As per IRC66:2012
23.Which one of the options contains ONLY primary air pollutants?
A. Ozone and peroxyacetyl nitrate
B. Nitrogen oxides and peroxyacetyl nitrate
C. Hydrocarbons and nitrogen oxides
D. Hydrocarbons and ozone
Answer : C
Solution :
Ozone and PAN are secondary air pollutants.
24.The following inequality is true for all x close to 0.
What is the value of
A. 2
B. 1/2
C. 0
16
D. 1
Answer : A
Solution :
It is form
L?s hospital rule (differentiate)
Putting 0 everywhere ? still form.
Differentiating numerator and denominator again,
25.The velocity field in a flow system is given by v = 2i + (x + y)j + (xyz)k. The acceleration
of the fluid at (1, 1, 2) is
A. j + k
B. 2i + 10 k
C. 4j + 10k
D. 4i + 12 k
Answer : C
Solution :
17
and
= 2 + (x + y) + (xyz)(0) + 0
and
= 2(yz) + (x + y)(xz) + (xyz)(xy) + 0
az = 2(1 ? 2) + (1 + 1)(1 ? 2) + (1 ? 1
? 2) (1?1)
= 10k
Therefore,
26.A steel column is restrained against both translation and rotation at one end and is
restrained only against rotation but free to translate at the other end. Theoretical and design
(IS: 800 ? 2007) values, respectively, of effective length factor of the column are
18
A. 1.0 and 1.0
B. 1.2 and 1.0
C. 1.2 and 1.2
D. 1.0 and 1.2
Answer : D
Solution :
As per IS:800-2007
27.Euclindean norm (length) of the vector [4 ?2 ? 6]
T
is
A. ?48
B. ?24
C. ?12
D. ?56
Answer : D
Solution :
The Euclidean norm assigns to each vector the length of its arrow. Because of this,
the Euclidean norm is often known as the magnitude. So,
Length
28.An inflow hydrograph is routed through a reservoir to produce an outflow hydrograph.
The peak flow of the inflow hydrograph is PI and the time of occurrence of the peak is tI. The
peak flow of the outflow hydrograph is P0 and the time of occurance of the peak is t0. Which
one of the following statements is correct?
A. PI < P0 and tI > t0
B. PI > P0 and tI > t0
C. PI < P0 and tI < t0
D. PI > P0 and tI < t0
Answer : D
Solution :
19
Pl > Po ; tl < to
29.Construction of a new building founded on a clayey soil was completed in January In
January 2014, the average consolidation settlement of the foundation in clay was recorded as
10 mm. The ultimate consolidation settlement was estimated in design as 40 mm.
Considering double drainage to occur at the clayey soil site, the expected consolidation
settlement in January 2019 (in mm, round off to the nearest integer) will be _____________
Answer :
Solution :
Ultimate consolidation = 40 mm
Recorded consolidation = 10 mm
? Total recorded consolidation
? 40 ? 0.375
20
30.The notation ?SC? as per Indian standard Soil Classification System refers to
A. Clayey silt
B. Sandy clay
C. Calyey sand
D. Silty clay
Answer : C
Solution :
SC : clayey sand
31.The speed-density relationship in a mid-block section of a highway follows the
Greenshield?s model. If the free flow speed is vf and the jam density is kj, the maximum flow
observed on this ection is
A.
B.
C. fvkj
D.
Answer : D
Solution :
?(1)
21
32.An anisotropic soil deposit has coefficient of permeability in vertical and horizontal
directions as kz and kx, respectively. For constructing a flow net, the horizontal dimension of
the problem?s geometry is transformed by a multiplying factor of
A.
B.
C.
D.
Answer : C
Solution :
Flow net for anisotropic soil.
?(i)
If we transformed geometry in x direction let x cordinate be transformed to the new
coordinate xt by the transformation.
22
?(ii)
From eq. (i) & (ii),
Hence prove
So, multiplied factor
33.The Laplace transform of sinh (at) is
A.
B.
C.
D.
Answer : C
Solution :
Laplace transform of sinh (at) =
23
34.The data from a closed traverse survey PQRS (run in the clockwise direction) are given in
the table
The closing error for the traverse PQRS (in degrees) is________
Answer :
Solution :
n = 4 (number of sides of closed traverse)
(2n ? 4) ? 90? = 360?
so, error in included angle
= (88 + 92 + 94 + 89) ? 360 = +3?
35.A vehicle is moving on a road of grade +4% at a speed of 20 m/s. Consider the coefficient
of rolling friction as 0.46 and acceleration due to gravity as 10 m/s
2
. On applying brakes to
reach a speed of 10 m/s, the required braking distance (in m, round off to nearest integer)
along the horizontal, is ______.
Answer :
Solution :
Given: grade = +4%
V1 = 20 m/sec.
f = 0.46
g = 10 m/sec.
V1 = 10 m/sec.
24
We know,
36.A broad gauge railway line passes through a horizontal curved section (radius = 875 m) of
length 200 m. The allowable speed on this portion is 100 km/h. For calculating the cant,
consider the gauge as centre-to-centre distance between the rail heads, equal to 1750mm, The
maximum permissible cant (in mm, round off to 1 decimal place) with respect to the centreto-
centre distance between the rail heads is ______.
Answer :
Solution :
Given data:
R = 875 mm
Allowable speed = 100 kmph
Gauge length G = 1750 mm
Allowable cant
37.When a specimen of M25 concrete is loaded to a stress level of 12.5 MPa, a strain of 500
? 10
?6
is recorded. If this load is allowed to stand for a long time, the strain increases to 1000
? 10
?6
. In accordance with provisions of IS: 456-2000, considering the long-term effects, the
effective modulus of elasticity of the concrete (in MPa) is ________
Answer :
Solution :
25
Short term strain = 500 ? 10
?6
Long term strain = 1000 ? 10
?6
So, creep coefficient,
? = 1
Long-term effective modulus
= 12500 N/mm
2
= 12500 MPa
or
38.The probability density function of a continuous random variable distributed uniformly
between x and y (for y > x) is
A.
B. x ? y
C. y ? x
D.
Answer : D
Solution :
Probability density function of a uniformly distributed random variable.
26
39.The uniform arrival and uniform service rates observed on an approach road to a
signalized intersection are 20 and 50 vehicles/minutes, respectively. For this signal, the red
time is 30 s, the effective green time is 30 s, and the cycle length is 60s. Assuming that
initially there are no vehicles in the queue, the average delay per vehicle using the approach
road during a cycle length (in s, round off to 2 decimal places) is _______
Answer :
Solution :
Average delay per vehicle
= 12.5 sec
40.A rolled I-section beam is supported on a 75 mm wide bearing plate as shown in the
figure. Thickness of flange and web of the I-section are 20 mm and 8mm, respectively. Root
27
radius of the I-section is 10mm. Assuming: material yield stress,
fy = 250 MPa and partial safety factor for material, ?mo = 1.10
As per IS: 800-2007, the web bearing strength (in kN, round off to 2 decimal places) of the
beam is _______
Answer :
Solution :
Effective area in bearing = [75 + 2.5 (flange thickness + root radius)] ? 8
= [75 + 2.5 (20 + 10)] ? 8
= 1200 mm
2
so, web bearing strength
= 272.73 kN
41.The critical bending compressive stress in the extreme fibre of a structural steel section is
1000 MPa. It is given that the yield strength of the steel is 250 MPa, width of flange is 250
mm and thickness of flange is 15 mm. As per the provisions of IS: 800-2007, the
nondimensional slendeness ratio of the steel crosssection is
28
A. 0.50
B. 2.00
C. 0.25
D. 0.75
Answer : A
Solution :
Non-dimensional slenderness ratio
42.At the foot of a spillyway, water flows at a depth of 23 cm with a velocity of 8.1 m/s, as
shown in the figure.
The flow enters as an M-3 profile in the long wide rectangular channel with bed
slope and Manning?s n = 0.A hydraulic jump is formed at a certain distance from
the foot of the spillway. Assume the acceleration due to gravity, g = 9.81 m/s
2
. Just before the
hydraulic jump, the depth of flow y1 (in m, round off to 2 decimal places) is _________
Answer :
Solution :
Given data:
y = 0.23 m
V = 8.1 m/sec.
Slope,
29
h = 0.015
g = 9.81 m/sec
2
q = yV = 8.1 ? 0.23
= 1.863 m
3
/sec/m
It is given that flow enters as an M-3 profile in the long wide rectangular channel with bed
slope
From manning equation at M3 profile section.
[for wide channel R = y]
The flow profile will follow normal depth (yn) after jump.
For wide rectangular channel,
Here, yn = y 2 = 1.11 m
30
Again,
? y 1 = 0.417 m < y c [supercritical]
43.Consider the reactor shown in the figure. The concentration (in mg/l) of a compound in
the influent and effluent are C0 and C, flow rate through the reactor is Q m
3
/h respectively.
The compound is degraded in the reactor following the first order reactions. The mixing
condition of the reactor Complete Mix Flow Reactor (CMFR) or a plug-flow reactor (PFR).
The length of the reactor can be adjusted in these two mixing conditions to LCMFR and
LPER while keeping the cross-section of the reactor constant. Assuming steady state and for
C/C0 = 0.8, the value of LCMFR/LPER (round off to 2 decimal places) is _______
Answer :
Solution :
A = constant
Q = AL
For plug flow
[ detention time for plug flow reaction]
For completely mix = C =
[ detention time for completely mix reaction]
31
Also,
44.A series of perpendicular offsets taken from a curved boundary wall to a straight survey
line at an interval of 6 m are 1.22, 1.67, 2.04, 2.34, 2.14, 1.87, and 1.15 m. The area (in m2,
round off to 2 decimal places) boundary by the survey line, curved boundary wall, the first
and the last offsets, determined using Simpson?s rule, is _______.
Answer :
Solution :
Area by simpson?s rule
45.A water treatment plant treats 6000 m
3
of water per day. As a part of the treatment
process, discrete particles are required to be settled in a clarifier. A column test indicates that
an overflow rate of 1.5 m per hour would produce the desired removal of particles through
32
settling in the clarifier having a depth of 3.0 m. The volume of the required clarifier, (in m
3
,
round off to 1 decimal place) would be
Answer :
Solution :
Given data:
Flow rate = 6000 m
3
/day
Over flow rate = 1.5 m/hour
= 1.5 ? 24 m/day = 36 m/day
Flow area
= 166.67 m
2
Volume required for clarifier = Flow area ? depth
= 166.67 ? 3 = 500 m
3
46.A flexible pavement has the following class of loads during a particular hour of the day.
i. 80 buses with 2-axles (each axle load of 40 kN);
ii. 160 trucks with 2-axles (front and rear axle loads of 40 kN and 80 kN, respectively)
The equivalent standard axle load repetitions for this vehicle combination as per IRC:37-2012
would be
A. 320
B. 250
C. 240
D. 180
Answer : D
Solution :
33
= 5 + 5 + 10 + 160
= 180
47.Constant head permeability tests were performed on two soil specimens, S1 and SThe
ratio of height of the two specimens (LS1: LS2) is 1.5, the ratio of the diameter of specimens
(DS1:DS2) is 0.5, and the ratio of the constant head (hs1:hs2) applied on the specimens is 2.0. If
the discharge from both the specimens is equal, the ratio of the permeability of the soil
specimens (ks1:ks2) is ________
Answer :
Solution :
For constant head permeability test,
Q ? discharge
L ? length of specimen
a ? area of cross-section of specimen
h ? constant head
Given,
34
48.A long uniformly distributed load of 10 kN/m and a concentrated load of 60 kN are
moving together on the beam ABCD shown in the figure (not drawn to scale). The relative
positions of the two loads are not fixed. The maximum shear force (in kN, round off to the
nearest integer) caused at the internal hinge B due to the two loads is __________
Answer :
Solution :
35
Maximum
49.A square footing of 2m sides rests on the surface of a homogeneous soil bed having the
properties: cohesion c = 24 kPa, angle of internal friction ? = 25?, and unit weight ? = 18
kN/m
3
. Terzaghi?s bearing capacity factor ? = 25? are Nc = 25.1, Nq = 12.7, N? = 9.7, N?c =
14.8, N?q = 5.6, and N?? = 3.The ultimate bearing capacity of the foundation (in kPa, round
off to 2 decimal places) is ______.
Answer :
Solution :
Here, ? < 29
o
Footing rests on the ground
Hence, q = 0
so,
use, accordingly.
50.The dimensions of a soil sampler are given in the table.
36
For this sampler, the outside clearance ratio (in percent, round off to 2 decimal places) is
_________.
Answer :
Solution :
Given:
D4 = 90 mm
D2 = 100 mm
51.A plane frame shown in the figure (not to scale) has linear elastic springs at node H. The
spring constants are kx = ky = 5 ? 10
5
kN/m
3
and k? = 3 ? 10
5
kNm/rad.
For the externally applied moment of 30 kNm at node F, the rotation (in degrees, round off to
3 decimals) observed in the rotational spring at node H is ________
Answer :
37
Solution :
R ? 3 = 30
? R = 10 kN
From right side of FBD
R ? 3 = K? . ?
= 10
?4
rad = 0.0057
= 0.006 degree
52.Chlorine is used as the disinfectant in a municipal water treatment plant. It achieves 50
percent of disinfection efficiency measured in terms of killing the indicator microorganisms
(E-Coli) in 3 minutes. The minimum time required to achieve 99 percent disinfection
efficiency would be
A. 9.93 minutes
B. 11.93 minutes
C. 21.93 minutes
D. 19.93 minutes
Answer : D
Solution :
Disinfection eff.
38
Again,
? t = 19.93 min.
53.A confined aquifer of 15 m constant thickness is sandwiched between two aquicludes as
shown in the figure (not drawn to scale)
The heads indicated by two piezometers P and Q are 55.2 m and 34.1 m, respectively. The
aquifer has a hydraulic conductivity of 80 m/ day and its effective porosity is 0.If the distance
between the piezometers is 2500 m, the time taken by the water to travel through the aquifer
from piezometer location P to Q (in days, round off to 1 decimal place) is ______.
Answer :
Solution :
Given,
39
= 9.259 ? 10
?4
m/s
h = 55.2 ? 34.1 = 21.1 m
L = 2500 m
n = 0.25
B = 15 m
As per Darcy?s law,
V = ki
Seepage velocity
54.For a plane stress problem, the state of stress at a point P is represented by the stress
element as shown in the figure.
40
By how much angle (?) in degrees the stress element should be rotated in order to get the
planes of maximum shear stress?
A. 26.6
B. 48.3
C. 31.7
D. 13.3
Answer : C
Solution :
41
Coordinates of
= (30, 0)
In ?ABC ,
BC = 80 ? 30 = 50 MPa
AB = 25 MPa
Angle to be rotated
55.The inverse of the matix is
42
A.
B.
C.
D.
Answer : B
Solution :
Det. of matrix, |A| = 2 (12 ? 2) ? 3(16 ? 1) + 4(8 ? 3)
= 20 ? 45 + 20
= ?5
(adj A) = (cof A)'
cof of A11 = 12 ? 2 = 10
43
cof of A12 = ?(16 ? 1) = ?15
cof of A13 = 8 ? 3 = 5
cof of A21 = ?(12 ? 8) = ?4
cof of A22 = (8 ? 4) = 4
cof of A23 = ?(4 ? 3) = ?1
cof of A31 = (3 ? 12) = ?9
cof of A32 = ?(2 ? 16) = 14
cof of A33 = (6 ? 12) = ?6
adj A = (cof A)'
56.Two identical pipes (i.e. having the same length, same diameter, and same roughness) are
used to withdraw water from a reservoir. In the first case, they are attached in series and also
discharge freely into the atmosphere. In the second case, they are attached in parallel and
friction factor is same in both the cases, the ratio of the discharge in the parallel arrangement
to that in the series arrangement (round off to 2 decimal places) is _____
Answer :
Solution :
44
Case (1): Series connection,
then ?(i)
Case (ii) : parallel connection
then, ...(ii)
then from equation (i) and (ii)
57.A camera with a focal length of 20 cm fitted in an aircraft is used for taking vertical aerial
photographs of a terrain. The average elevation of the terrain is 1200 m above mean sea level
(MSL). What is the height above MSL at which an aircraft must fly in order to get the aerial
photographs at a scale of 1:8000?
A. 3200 m
B. 2800 m
45
C. 2600 m
D. 3000 m
Answer : B
Solution :
Given that
f = 0.2 m
h = 1200 m
then,
58.Raw municipal solid waste (MSW) collected from a city contains 70% decomposable
material that can be converted to methane. The water content of the decomposable material is
35%. An elemental anlysis of the decomposable material yields the following mass percent.
C : H : O: N : other = 44 : 6 : 43 : 0.8 : 6.2
The methane production of the decomposable material is governed by the following
stoichiometric relation
CaHbOcNd + nH2O ? mCH4 + sCO2 + dNH3
Given atomic weights: C = 12, H = 1, O = 16, N = The mass of methane produced (in grams,
round off to 1 decimal place) per kg of raw MSW will be _______
Answer :
Solution :
For the MSW, the phase diagram is as follows
46
From the mass percent given,
12a = 44x
b = 6x
16c = 43x
14d = 0.8x
? = 100x
100x = wt of decomposable waste
= 0.455 kg
? a = 16.683, b = 27.3,
c = 12.228, d = 0.26
From the balance of reaction we have
a = m + s ?(A)
b + 2n = 4m + 3d ?(B)
c + n = 2s ?(C)
? 2c + 2n = 4s ?(D)
? b ? 2c = 4m ? 4s + 3d
? m - s = 0.516
47
? m + s = 16.683
? m = 8.6
? Methane produced = 8.6 ? 16 g = 137.6 g
59.In the context of provisions relating to durability of concrete, consider the following
assertion:
Assertion (1): As per IS 456-2000, air entrainment to the extent of 3% to 6% is required for
concrete exposed to marine environment.
Assertion (2): The equivalent alkali content (in terms of Na2O equivalent) for a cement
containing 1% and 0.6% of Na2O and K2O, respectively, is approximately 1.4% (rounded to 1
decimal place).
Which one of the following statements is correct?
A. Assertion (1) is true and Assertion (2) is FALSE
B. Both Assertion (1) and Assertion (2) are TRUE
C. Both Assertion (1) and Assertion 2) are FALSE
D. Assertion (1) is false and Assertion (2) is TRUE
Answer : B
Solution :
As per IS-456, where freezing and thawing actions under wet conditions exit, inhance
durability can be obtained by the use of suitable air entraining admixture.
The entrained air percentage can vary from 4 ? 1 to 5 ? 1 (i.e. 3 to 6%) depending on size of
aggregate. Hence, Assertion (1) is correct.
Equivalent alkali content (in terms of Na2O equivalent)
= Na2O + 0.658 ? K2O
Molecular ratio of Na2O to K2O = 0.658
= 1% + 0.658 ? 0.6% = 1.39
? 1.4 (rounded to 1 decimal place).
48
60.The ordinates, u of a 2-hour unit hydrograph (i.e. for 1 cm of effective rain), for a
catchment are shown in the table.
A 6-hour storm occurs over the catchment such that the effective rainfall intensity is 1
cm/hour for the first two hours, zero for the next two hours, and 0.5 cm/hour for the last two
hours. If the base flow is constant at 5 m
3
/s, the peak flow due to this storm (in m
3
/s, round
off to 1 decimal place) will be ________
Answer :
Solution :
0?2 hr ? total rainfall = 1 ? 2 = 2 cm
2?4 hr ? total rainfall = 0 cm
4?6 hr ? total rainfall = 2 ? 0.5 = 1 cm
Maximum ordinate is 92 m
3
/sec.
Maximum flood discharge = 92 + 5
49
= 97 m
3
/sec
61.The speed-density relationship of a highway is given as
u = 100 ? 0.5 k
where, u = speed in km per hour, k = density in vehicles per km. The maximum flow (in
vehicles per hour, round off to the nearest integer) is ______
Answer :
Solution :
Given that,
u = 100 ? 0.5 k
Maximum flow
u = uf (1- k / kj )
u = 100(1- (0.5k/100))
= 100(1- k/200)
therefore, uf = 100 and kj = 200
so, maximum flow
= 5000 vehicles/hr
62.Consider the hemi-spherical tank of radius 13 m as shown in the figure (not drawn to
scale). What is the volume of water (in m
3
) when the depth of water at the centre of the tank
is 6 m?
50
A. 78?
B. 468 ?
C. 156 ?
D. 396 ?
Answer : D
Solution :
Volume generated by the Y axis revolution equation of circle
? (x + 0)
2
+ (y - 13)
2
= 13
2
Volume
= 396 ?
63.A timber pile of length 8m and diameter of 0.2m is driven with a 20 kN drop hammer,
falling freely from a height of 1.5m. The total penetration of the pile in the last 5 blows is 40
mm. Use the engineering news record expression. Assume a factor of safety of 6 and
empirical factor (allowing reducing in the theoretical set, due to energy losses) of 2.5 cm. The
safe load carrying capacity of the pile (in kN, round off to 2 decimal places) is ______
Answer :
Solution :
Engineering news record expression
FirstRanker.com - FirstRanker's Choice
2
GATE CE 2019 Set 2: Questions & Solutions
General Aptitude
1.Daytime temperature in Delhi can ______ 40?C
A. Peak
B. reach
C. get
D. stand
Answer : B
Solution :
Daytime temperature in Delhi can reach 40?C
2.The growth rate of ABC Motors in 2017 was the same ________ XYZ Motors in 2016 .
A. As those of
B. As that off
C. As that of
D. As off
Answer : C
Solution :
The growth rate of ABC Motors in 2017 was the same as that of XYZ Motors in 2016.
3.Suresh wanted to lay a new carpet in his new mansion with an area of 70 55 sq. mts.
However an area of 550 sq. mts had to be left out for flower pots. If the cost of carpet is Rs.
50 per sq. mts, how much money (in Rs.) will be spent by Suresh for the carpet now?
A. Rs. 1,65,000
B. Rs. 1,92,500
C. Rs. 1,27,500
D. Rs. 2,75,000
Answer : A
3
Solution :
Area of mansion = 70 ? 55 = 3850 m
2
Area for flower pots = 550 m
2
? Area left for carpet = 3850 ? 550 = 3300m
2
? Cost = 3300 ? 50 = 165000
4.A retaining wall with measurements 30 m ? 12 m ? 6 m was constructed with bricks of
dimensions 8 cm ? 6 cm. If 60% of the wall consists of bricks used for the construction is
___________ lakhs.
A. 45
B. 30
C. 40
D. 75
Answer : A
Solution :
Volume of wall = 30 ? 12 ? 6 = 2160 m
3
= 2160 ? 106 cm
3
Total volume of bricks required = 2160 ? 106 ? 0.6 cm
3
= 1296 ? 106 cm
3
Volume of one brick = 8 ? 6 ? 6 = 288 cm
3
? No. of bricks required
= 4.5 ? 10
6
= 45 lakhs
5.Hima Das was _______ only Indian athlete to win _____________ gold for India.
A. the, many
B. an, the
C. an, a
4
D. the, a
Answer : D
Solution :
Hima Das was the only Indian athlete to win a gold for India.
6.Population of state X increased by x% and the population of state Y increased by y% from
2001 to 2011. Assume that x is greater than y. Let P be the ratio of the population of state X
to state Y in a given year. The percentage increase in P from 2001 to 2011 is_____________
A. x ? y
B.
C.
D.
Answer : C
Solution :
Let population of X is ?A? in 2001
and Population of Y is ?B? in 2001
? Population of A in 2011
& Population of B in 2011
Given,
5
% increase in P
7.The Newspaper report that over 500 hectares of tribal land spread across 28 tribal
settlements in Mohinitampuram forest division have already been ?alienated?. A top forest
official said, ?First the tribals are duped out of their land holdings. Second, the families thus
rendered landless are often forced to encroach further into the forests?.
On the basis of the information available in the paragraph, _______ is/are responsible for
duping the tribals.
A. The newspaper
B. Landless families
C. forest officials
D. it cannot be inferred who
Answer : D
Solution :
?it cannot be inferred who?
From given information, nobody can be held responsible.
8.An oil tank can be filled by pipe X in 5 hours and pipe Y in 4 hours, each pump working on
its own. When the oil tank is full and the drainage hole is open, the oil is drained in 20 hours.
6
If initially the tank was empty and someone started the two pumps together but left the
drainage hole open, how many hours will it tak for the tank to be filled? (Assume that the rate
of drainage is independent of the head)
A. 2.50
B. 1.50
C. 2.00
D. 4.00
Answer : A
Solution :
Pipe X will fill how much in one hour tank
Pipe Y will fill how much in one hour tank
Drainage will drain out how much water in 1 hour tank
? Total tank filled in one hour
tank gets filled in = 1 hour
? Full (i) tank gets filled in
9.Mohan, the manager, wants his four workers to work in pairs. No paper should work for
more than 5 hours. Ram and Johan have worked together for 5 hours. Krishna and Amir have
7
worked as a team for 2 hours. Krishan does not want to work with Ram whom should mohan
allot to work with Johan, if we wants all the workers to continue working?
A. Amir
B. Krishna
C. Ram
D. None of the three
Answer : B
Solution :
Conditions given:
(i) Ram & John have worked for 5 hours.
(ii) Krishna doesn?t want to work with Ram.
(iii) No pair should work beyond 5 hours.
Hence, Krishna should work with John to satisfy the above conditions.
10.?Popular Hindi fiction, despite ? or perhaps because of ? its wide reach, often does not
appear in our cinema. As ideals that viewers are meant to look up to rather than identify with,
Hindi film protagonisits usually read books of apsirational value: textbooks, English books,
or high value literature?.
Which one of the following CANNOT be inferred from the paragraph above?
A. Textbooks, English books or high literature have apsirational value, but not popular Hindi
fiction
B. People do not look up to writers of textbooks, English book or high value literature
C. Though popular hindi fiction was wide readh, it often does not appear in the movies
D. Protagonists in Hindi movies, being ideals for viewers, read only books of aspirational
value.
Answer : B
Solution :
People do not look up to writers of textbooks, English book or high value literature.
8
Civil Engineering
11.What is curl of the vector field 2x
2
yi + 5z
2
j - 4yzk?
A. - 14zi - 2x
2
k
B. 6zi + 4xj - 2x
2
k
C. 6zi + 8xyj + 2x
2
yk
D. -14zi + 6yj + 2x
2
k
Answer : A
Solution :
12.Analysis of a water sample revealed that the sample contains the following species.
9
Concentrations of which of the species will be required to compute alkalinity?
A.
B.
C.
D.
Answer : A
Solution :
H2CO3 and HCO3
-
never come together
13.The value of the function f(x) is given at n distinct values of x and its value is to be
interpolated at the point x
*
using all the n points. The estimate is obtained first by the
Lagrange polynomial, denoted by IL, and then by the Newton polynomial, denoted by IN.
Which one of the following statements is correct?
A. IL is always greater than IN
B. No definite relation exists between IL and IN.
C. IL is always less than IN
D. IL and IN are always equal
Answer : B
Solution :
Lagrange?s form is more efficient when you have to interpolate several data sets on the same
data point.
Newton?s form is more efficient when you have to interpolate data incrementally. So no
relationship between both.
14.If the fineness modulus of a sample of the fine aggregates is 4.3, the mean size of the
particles in the sample is between
10
A. 150 ?m and 300 ?m
B. 2.36 mm and 4.75 mm
C. 300 ?m and 600 ?m
D. 1.18 mm and 2.36 mm
Answer : D
Solution :
150 ?m, 300 ?m, 600 ?m, 1.18 mm,
2.36 mm, 4.75 mm, 10 mm, 20 mm,
40 mm, 80 mm
150 ? 1
300 ? 2
600 ? 3
4.75 - 6
15.The command area of a canal grows only one crop, i.e., wheat. The base period of wheat
is 120 days and its total water requirement, ?, is 40 cm. If the canal discharge is 2 m
3
/s, the
area, in hectares, rounded off to the nearest integer, which could be irrigated (neglecting all
losses) is ______________
Answer :
Solution :
B = 120 days
? = 0.4 m
and ? = 8.64B/D
? D = 2592 ha per (m
3
/s)
? For 2m
3
/sec water, area will be 5184 ha
11
16.The characteristic compressive strength of concrete required in a project is 25 MPa and
standard deviation in the observed compressive strength expected at site is 4 MPa. The
average compressive strength of cubes tested at different water-cement (w/c) ratios using the
same material as is used for the project is given in the table.
The water-cement ratio (in percent, round off to the lower integer) to be used in the mix
is________
Answer :
Solution :
fck = 25 ; ? = 4 MPa
fm = fck + 1.65? = 31.6 MPa
Using interpolation
= 46.7 (Rounded off to the lowest integer).
17.A solid sphere of radius, r, and made of material with density ?s, is moving through the
atmosphere (constant pressure, p) with a velocity, ?. The net force ONLY due to atmospheric
pressure (Fp) acting on the sphere at any time, t, is
A.
B. Zero
C. ?r
2
p
D. 4?r
2
p
Answer : B
Solution :
Force = area ? P
12
Net force will be zero as pressure acts from all sides.
18.An earthen dam of height H is made of cohesive soil whose cohesion and unit weight are c
and ?, respectively. If the factor of safety against cohesion is Fc, the Taylor?s stability
A.
B.
C.
D.
Answer : C
Solution :
Taylor?s stability number,
19.A closed thin walled tube has thickness, t, mean enclosed area within the boundary of the
centrline of tube?s thickness, Am, and shear stress ?. Torsional moment of resistance, T of the
section would be
A.
B.
13
C.
D.
Answer : A
Solution :
20.For a channel section subjected to a downward vertical shear force at its centroid, which
one of the following represents the correct distribution of shear stress in flange and web?
A.
B.
C.
14
D.
Answer : C
Solution :
Standard result
21.The degree of static indeterminancy of the plane frame is shown in the figure is ________
Answer :
Solution :
Ds = 3C ? R'
C = 6
Ds = (3 ? 6 ? 2) ? 1 (due to hinge)
= 15
15
22.Structural failures considered in the mechanistic method of bituminous pavement design
are
A. Shear and slippage
B. Fatique and Rutting
C. Fatique and shear
D. Rutting and shear
Answer : B
Solution :
As per IRC66:2012
23.Which one of the options contains ONLY primary air pollutants?
A. Ozone and peroxyacetyl nitrate
B. Nitrogen oxides and peroxyacetyl nitrate
C. Hydrocarbons and nitrogen oxides
D. Hydrocarbons and ozone
Answer : C
Solution :
Ozone and PAN are secondary air pollutants.
24.The following inequality is true for all x close to 0.
What is the value of
A. 2
B. 1/2
C. 0
16
D. 1
Answer : A
Solution :
It is form
L?s hospital rule (differentiate)
Putting 0 everywhere ? still form.
Differentiating numerator and denominator again,
25.The velocity field in a flow system is given by v = 2i + (x + y)j + (xyz)k. The acceleration
of the fluid at (1, 1, 2) is
A. j + k
B. 2i + 10 k
C. 4j + 10k
D. 4i + 12 k
Answer : C
Solution :
17
and
= 2 + (x + y) + (xyz)(0) + 0
and
= 2(yz) + (x + y)(xz) + (xyz)(xy) + 0
az = 2(1 ? 2) + (1 + 1)(1 ? 2) + (1 ? 1
? 2) (1?1)
= 10k
Therefore,
26.A steel column is restrained against both translation and rotation at one end and is
restrained only against rotation but free to translate at the other end. Theoretical and design
(IS: 800 ? 2007) values, respectively, of effective length factor of the column are
18
A. 1.0 and 1.0
B. 1.2 and 1.0
C. 1.2 and 1.2
D. 1.0 and 1.2
Answer : D
Solution :
As per IS:800-2007
27.Euclindean norm (length) of the vector [4 ?2 ? 6]
T
is
A. ?48
B. ?24
C. ?12
D. ?56
Answer : D
Solution :
The Euclidean norm assigns to each vector the length of its arrow. Because of this,
the Euclidean norm is often known as the magnitude. So,
Length
28.An inflow hydrograph is routed through a reservoir to produce an outflow hydrograph.
The peak flow of the inflow hydrograph is PI and the time of occurrence of the peak is tI. The
peak flow of the outflow hydrograph is P0 and the time of occurance of the peak is t0. Which
one of the following statements is correct?
A. PI < P0 and tI > t0
B. PI > P0 and tI > t0
C. PI < P0 and tI < t0
D. PI > P0 and tI < t0
Answer : D
Solution :
19
Pl > Po ; tl < to
29.Construction of a new building founded on a clayey soil was completed in January In
January 2014, the average consolidation settlement of the foundation in clay was recorded as
10 mm. The ultimate consolidation settlement was estimated in design as 40 mm.
Considering double drainage to occur at the clayey soil site, the expected consolidation
settlement in January 2019 (in mm, round off to the nearest integer) will be _____________
Answer :
Solution :
Ultimate consolidation = 40 mm
Recorded consolidation = 10 mm
? Total recorded consolidation
? 40 ? 0.375
20
30.The notation ?SC? as per Indian standard Soil Classification System refers to
A. Clayey silt
B. Sandy clay
C. Calyey sand
D. Silty clay
Answer : C
Solution :
SC : clayey sand
31.The speed-density relationship in a mid-block section of a highway follows the
Greenshield?s model. If the free flow speed is vf and the jam density is kj, the maximum flow
observed on this ection is
A.
B.
C. fvkj
D.
Answer : D
Solution :
?(1)
21
32.An anisotropic soil deposit has coefficient of permeability in vertical and horizontal
directions as kz and kx, respectively. For constructing a flow net, the horizontal dimension of
the problem?s geometry is transformed by a multiplying factor of
A.
B.
C.
D.
Answer : C
Solution :
Flow net for anisotropic soil.
?(i)
If we transformed geometry in x direction let x cordinate be transformed to the new
coordinate xt by the transformation.
22
?(ii)
From eq. (i) & (ii),
Hence prove
So, multiplied factor
33.The Laplace transform of sinh (at) is
A.
B.
C.
D.
Answer : C
Solution :
Laplace transform of sinh (at) =
23
34.The data from a closed traverse survey PQRS (run in the clockwise direction) are given in
the table
The closing error for the traverse PQRS (in degrees) is________
Answer :
Solution :
n = 4 (number of sides of closed traverse)
(2n ? 4) ? 90? = 360?
so, error in included angle
= (88 + 92 + 94 + 89) ? 360 = +3?
35.A vehicle is moving on a road of grade +4% at a speed of 20 m/s. Consider the coefficient
of rolling friction as 0.46 and acceleration due to gravity as 10 m/s
2
. On applying brakes to
reach a speed of 10 m/s, the required braking distance (in m, round off to nearest integer)
along the horizontal, is ______.
Answer :
Solution :
Given: grade = +4%
V1 = 20 m/sec.
f = 0.46
g = 10 m/sec.
V1 = 10 m/sec.
24
We know,
36.A broad gauge railway line passes through a horizontal curved section (radius = 875 m) of
length 200 m. The allowable speed on this portion is 100 km/h. For calculating the cant,
consider the gauge as centre-to-centre distance between the rail heads, equal to 1750mm, The
maximum permissible cant (in mm, round off to 1 decimal place) with respect to the centreto-
centre distance between the rail heads is ______.
Answer :
Solution :
Given data:
R = 875 mm
Allowable speed = 100 kmph
Gauge length G = 1750 mm
Allowable cant
37.When a specimen of M25 concrete is loaded to a stress level of 12.5 MPa, a strain of 500
? 10
?6
is recorded. If this load is allowed to stand for a long time, the strain increases to 1000
? 10
?6
. In accordance with provisions of IS: 456-2000, considering the long-term effects, the
effective modulus of elasticity of the concrete (in MPa) is ________
Answer :
Solution :
25
Short term strain = 500 ? 10
?6
Long term strain = 1000 ? 10
?6
So, creep coefficient,
? = 1
Long-term effective modulus
= 12500 N/mm
2
= 12500 MPa
or
38.The probability density function of a continuous random variable distributed uniformly
between x and y (for y > x) is
A.
B. x ? y
C. y ? x
D.
Answer : D
Solution :
Probability density function of a uniformly distributed random variable.
26
39.The uniform arrival and uniform service rates observed on an approach road to a
signalized intersection are 20 and 50 vehicles/minutes, respectively. For this signal, the red
time is 30 s, the effective green time is 30 s, and the cycle length is 60s. Assuming that
initially there are no vehicles in the queue, the average delay per vehicle using the approach
road during a cycle length (in s, round off to 2 decimal places) is _______
Answer :
Solution :
Average delay per vehicle
= 12.5 sec
40.A rolled I-section beam is supported on a 75 mm wide bearing plate as shown in the
figure. Thickness of flange and web of the I-section are 20 mm and 8mm, respectively. Root
27
radius of the I-section is 10mm. Assuming: material yield stress,
fy = 250 MPa and partial safety factor for material, ?mo = 1.10
As per IS: 800-2007, the web bearing strength (in kN, round off to 2 decimal places) of the
beam is _______
Answer :
Solution :
Effective area in bearing = [75 + 2.5 (flange thickness + root radius)] ? 8
= [75 + 2.5 (20 + 10)] ? 8
= 1200 mm
2
so, web bearing strength
= 272.73 kN
41.The critical bending compressive stress in the extreme fibre of a structural steel section is
1000 MPa. It is given that the yield strength of the steel is 250 MPa, width of flange is 250
mm and thickness of flange is 15 mm. As per the provisions of IS: 800-2007, the
nondimensional slendeness ratio of the steel crosssection is
28
A. 0.50
B. 2.00
C. 0.25
D. 0.75
Answer : A
Solution :
Non-dimensional slenderness ratio
42.At the foot of a spillyway, water flows at a depth of 23 cm with a velocity of 8.1 m/s, as
shown in the figure.
The flow enters as an M-3 profile in the long wide rectangular channel with bed
slope and Manning?s n = 0.A hydraulic jump is formed at a certain distance from
the foot of the spillway. Assume the acceleration due to gravity, g = 9.81 m/s
2
. Just before the
hydraulic jump, the depth of flow y1 (in m, round off to 2 decimal places) is _________
Answer :
Solution :
Given data:
y = 0.23 m
V = 8.1 m/sec.
Slope,
29
h = 0.015
g = 9.81 m/sec
2
q = yV = 8.1 ? 0.23
= 1.863 m
3
/sec/m
It is given that flow enters as an M-3 profile in the long wide rectangular channel with bed
slope
From manning equation at M3 profile section.
[for wide channel R = y]
The flow profile will follow normal depth (yn) after jump.
For wide rectangular channel,
Here, yn = y 2 = 1.11 m
30
Again,
? y 1 = 0.417 m < y c [supercritical]
43.Consider the reactor shown in the figure. The concentration (in mg/l) of a compound in
the influent and effluent are C0 and C, flow rate through the reactor is Q m
3
/h respectively.
The compound is degraded in the reactor following the first order reactions. The mixing
condition of the reactor Complete Mix Flow Reactor (CMFR) or a plug-flow reactor (PFR).
The length of the reactor can be adjusted in these two mixing conditions to LCMFR and
LPER while keeping the cross-section of the reactor constant. Assuming steady state and for
C/C0 = 0.8, the value of LCMFR/LPER (round off to 2 decimal places) is _______
Answer :
Solution :
A = constant
Q = AL
For plug flow
[ detention time for plug flow reaction]
For completely mix = C =
[ detention time for completely mix reaction]
31
Also,
44.A series of perpendicular offsets taken from a curved boundary wall to a straight survey
line at an interval of 6 m are 1.22, 1.67, 2.04, 2.34, 2.14, 1.87, and 1.15 m. The area (in m2,
round off to 2 decimal places) boundary by the survey line, curved boundary wall, the first
and the last offsets, determined using Simpson?s rule, is _______.
Answer :
Solution :
Area by simpson?s rule
45.A water treatment plant treats 6000 m
3
of water per day. As a part of the treatment
process, discrete particles are required to be settled in a clarifier. A column test indicates that
an overflow rate of 1.5 m per hour would produce the desired removal of particles through
32
settling in the clarifier having a depth of 3.0 m. The volume of the required clarifier, (in m
3
,
round off to 1 decimal place) would be
Answer :
Solution :
Given data:
Flow rate = 6000 m
3
/day
Over flow rate = 1.5 m/hour
= 1.5 ? 24 m/day = 36 m/day
Flow area
= 166.67 m
2
Volume required for clarifier = Flow area ? depth
= 166.67 ? 3 = 500 m
3
46.A flexible pavement has the following class of loads during a particular hour of the day.
i. 80 buses with 2-axles (each axle load of 40 kN);
ii. 160 trucks with 2-axles (front and rear axle loads of 40 kN and 80 kN, respectively)
The equivalent standard axle load repetitions for this vehicle combination as per IRC:37-2012
would be
A. 320
B. 250
C. 240
D. 180
Answer : D
Solution :
33
= 5 + 5 + 10 + 160
= 180
47.Constant head permeability tests were performed on two soil specimens, S1 and SThe
ratio of height of the two specimens (LS1: LS2) is 1.5, the ratio of the diameter of specimens
(DS1:DS2) is 0.5, and the ratio of the constant head (hs1:hs2) applied on the specimens is 2.0. If
the discharge from both the specimens is equal, the ratio of the permeability of the soil
specimens (ks1:ks2) is ________
Answer :
Solution :
For constant head permeability test,
Q ? discharge
L ? length of specimen
a ? area of cross-section of specimen
h ? constant head
Given,
34
48.A long uniformly distributed load of 10 kN/m and a concentrated load of 60 kN are
moving together on the beam ABCD shown in the figure (not drawn to scale). The relative
positions of the two loads are not fixed. The maximum shear force (in kN, round off to the
nearest integer) caused at the internal hinge B due to the two loads is __________
Answer :
Solution :
35
Maximum
49.A square footing of 2m sides rests on the surface of a homogeneous soil bed having the
properties: cohesion c = 24 kPa, angle of internal friction ? = 25?, and unit weight ? = 18
kN/m
3
. Terzaghi?s bearing capacity factor ? = 25? are Nc = 25.1, Nq = 12.7, N? = 9.7, N?c =
14.8, N?q = 5.6, and N?? = 3.The ultimate bearing capacity of the foundation (in kPa, round
off to 2 decimal places) is ______.
Answer :
Solution :
Here, ? < 29
o
Footing rests on the ground
Hence, q = 0
so,
use, accordingly.
50.The dimensions of a soil sampler are given in the table.
36
For this sampler, the outside clearance ratio (in percent, round off to 2 decimal places) is
_________.
Answer :
Solution :
Given:
D4 = 90 mm
D2 = 100 mm
51.A plane frame shown in the figure (not to scale) has linear elastic springs at node H. The
spring constants are kx = ky = 5 ? 10
5
kN/m
3
and k? = 3 ? 10
5
kNm/rad.
For the externally applied moment of 30 kNm at node F, the rotation (in degrees, round off to
3 decimals) observed in the rotational spring at node H is ________
Answer :
37
Solution :
R ? 3 = 30
? R = 10 kN
From right side of FBD
R ? 3 = K? . ?
= 10
?4
rad = 0.0057
= 0.006 degree
52.Chlorine is used as the disinfectant in a municipal water treatment plant. It achieves 50
percent of disinfection efficiency measured in terms of killing the indicator microorganisms
(E-Coli) in 3 minutes. The minimum time required to achieve 99 percent disinfection
efficiency would be
A. 9.93 minutes
B. 11.93 minutes
C. 21.93 minutes
D. 19.93 minutes
Answer : D
Solution :
Disinfection eff.
38
Again,
? t = 19.93 min.
53.A confined aquifer of 15 m constant thickness is sandwiched between two aquicludes as
shown in the figure (not drawn to scale)
The heads indicated by two piezometers P and Q are 55.2 m and 34.1 m, respectively. The
aquifer has a hydraulic conductivity of 80 m/ day and its effective porosity is 0.If the distance
between the piezometers is 2500 m, the time taken by the water to travel through the aquifer
from piezometer location P to Q (in days, round off to 1 decimal place) is ______.
Answer :
Solution :
Given,
39
= 9.259 ? 10
?4
m/s
h = 55.2 ? 34.1 = 21.1 m
L = 2500 m
n = 0.25
B = 15 m
As per Darcy?s law,
V = ki
Seepage velocity
54.For a plane stress problem, the state of stress at a point P is represented by the stress
element as shown in the figure.
40
By how much angle (?) in degrees the stress element should be rotated in order to get the
planes of maximum shear stress?
A. 26.6
B. 48.3
C. 31.7
D. 13.3
Answer : C
Solution :
41
Coordinates of
= (30, 0)
In ?ABC ,
BC = 80 ? 30 = 50 MPa
AB = 25 MPa
Angle to be rotated
55.The inverse of the matix is
42
A.
B.
C.
D.
Answer : B
Solution :
Det. of matrix, |A| = 2 (12 ? 2) ? 3(16 ? 1) + 4(8 ? 3)
= 20 ? 45 + 20
= ?5
(adj A) = (cof A)'
cof of A11 = 12 ? 2 = 10
43
cof of A12 = ?(16 ? 1) = ?15
cof of A13 = 8 ? 3 = 5
cof of A21 = ?(12 ? 8) = ?4
cof of A22 = (8 ? 4) = 4
cof of A23 = ?(4 ? 3) = ?1
cof of A31 = (3 ? 12) = ?9
cof of A32 = ?(2 ? 16) = 14
cof of A33 = (6 ? 12) = ?6
adj A = (cof A)'
56.Two identical pipes (i.e. having the same length, same diameter, and same roughness) are
used to withdraw water from a reservoir. In the first case, they are attached in series and also
discharge freely into the atmosphere. In the second case, they are attached in parallel and
friction factor is same in both the cases, the ratio of the discharge in the parallel arrangement
to that in the series arrangement (round off to 2 decimal places) is _____
Answer :
Solution :
44
Case (1): Series connection,
then ?(i)
Case (ii) : parallel connection
then, ...(ii)
then from equation (i) and (ii)
57.A camera with a focal length of 20 cm fitted in an aircraft is used for taking vertical aerial
photographs of a terrain. The average elevation of the terrain is 1200 m above mean sea level
(MSL). What is the height above MSL at which an aircraft must fly in order to get the aerial
photographs at a scale of 1:8000?
A. 3200 m
B. 2800 m
45
C. 2600 m
D. 3000 m
Answer : B
Solution :
Given that
f = 0.2 m
h = 1200 m
then,
58.Raw municipal solid waste (MSW) collected from a city contains 70% decomposable
material that can be converted to methane. The water content of the decomposable material is
35%. An elemental anlysis of the decomposable material yields the following mass percent.
C : H : O: N : other = 44 : 6 : 43 : 0.8 : 6.2
The methane production of the decomposable material is governed by the following
stoichiometric relation
CaHbOcNd + nH2O ? mCH4 + sCO2 + dNH3
Given atomic weights: C = 12, H = 1, O = 16, N = The mass of methane produced (in grams,
round off to 1 decimal place) per kg of raw MSW will be _______
Answer :
Solution :
For the MSW, the phase diagram is as follows
46
From the mass percent given,
12a = 44x
b = 6x
16c = 43x
14d = 0.8x
? = 100x
100x = wt of decomposable waste
= 0.455 kg
? a = 16.683, b = 27.3,
c = 12.228, d = 0.26
From the balance of reaction we have
a = m + s ?(A)
b + 2n = 4m + 3d ?(B)
c + n = 2s ?(C)
? 2c + 2n = 4s ?(D)
? b ? 2c = 4m ? 4s + 3d
? m - s = 0.516
47
? m + s = 16.683
? m = 8.6
? Methane produced = 8.6 ? 16 g = 137.6 g
59.In the context of provisions relating to durability of concrete, consider the following
assertion:
Assertion (1): As per IS 456-2000, air entrainment to the extent of 3% to 6% is required for
concrete exposed to marine environment.
Assertion (2): The equivalent alkali content (in terms of Na2O equivalent) for a cement
containing 1% and 0.6% of Na2O and K2O, respectively, is approximately 1.4% (rounded to 1
decimal place).
Which one of the following statements is correct?
A. Assertion (1) is true and Assertion (2) is FALSE
B. Both Assertion (1) and Assertion (2) are TRUE
C. Both Assertion (1) and Assertion 2) are FALSE
D. Assertion (1) is false and Assertion (2) is TRUE
Answer : B
Solution :
As per IS-456, where freezing and thawing actions under wet conditions exit, inhance
durability can be obtained by the use of suitable air entraining admixture.
The entrained air percentage can vary from 4 ? 1 to 5 ? 1 (i.e. 3 to 6%) depending on size of
aggregate. Hence, Assertion (1) is correct.
Equivalent alkali content (in terms of Na2O equivalent)
= Na2O + 0.658 ? K2O
Molecular ratio of Na2O to K2O = 0.658
= 1% + 0.658 ? 0.6% = 1.39
? 1.4 (rounded to 1 decimal place).
48
60.The ordinates, u of a 2-hour unit hydrograph (i.e. for 1 cm of effective rain), for a
catchment are shown in the table.
A 6-hour storm occurs over the catchment such that the effective rainfall intensity is 1
cm/hour for the first two hours, zero for the next two hours, and 0.5 cm/hour for the last two
hours. If the base flow is constant at 5 m
3
/s, the peak flow due to this storm (in m
3
/s, round
off to 1 decimal place) will be ________
Answer :
Solution :
0?2 hr ? total rainfall = 1 ? 2 = 2 cm
2?4 hr ? total rainfall = 0 cm
4?6 hr ? total rainfall = 2 ? 0.5 = 1 cm
Maximum ordinate is 92 m
3
/sec.
Maximum flood discharge = 92 + 5
49
= 97 m
3
/sec
61.The speed-density relationship of a highway is given as
u = 100 ? 0.5 k
where, u = speed in km per hour, k = density in vehicles per km. The maximum flow (in
vehicles per hour, round off to the nearest integer) is ______
Answer :
Solution :
Given that,
u = 100 ? 0.5 k
Maximum flow
u = uf (1- k / kj )
u = 100(1- (0.5k/100))
= 100(1- k/200)
therefore, uf = 100 and kj = 200
so, maximum flow
= 5000 vehicles/hr
62.Consider the hemi-spherical tank of radius 13 m as shown in the figure (not drawn to
scale). What is the volume of water (in m
3
) when the depth of water at the centre of the tank
is 6 m?
50
A. 78?
B. 468 ?
C. 156 ?
D. 396 ?
Answer : D
Solution :
Volume generated by the Y axis revolution equation of circle
? (x + 0)
2
+ (y - 13)
2
= 13
2
Volume
= 396 ?
63.A timber pile of length 8m and diameter of 0.2m is driven with a 20 kN drop hammer,
falling freely from a height of 1.5m. The total penetration of the pile in the last 5 blows is 40
mm. Use the engineering news record expression. Assume a factor of safety of 6 and
empirical factor (allowing reducing in the theoretical set, due to energy losses) of 2.5 cm. The
safe load carrying capacity of the pile (in kN, round off to 2 decimal places) is ______
Answer :
Solution :
Engineering news record expression
51
s = Penetration of pile per hammer blow.
C = 2.5 cm = 0.025 m
so,
then safe load carrying capacity
64.A 2 m ? 4 m rectangular footing has to carry a uniformly distributed load of 120 kPa. As
per the 2:1 dispersion method of stress distribution, the increment in vertical stress (in kPa) at
a depth of 2 m below the footing is __________.
Answer :
Solution :
Increment in the vertical stress
65.An ordinary differential equation is given below:
The solution for the above equation is
FirstRanker.com - FirstRanker's Choice
2
GATE CE 2019 Set 2: Questions & Solutions
General Aptitude
1.Daytime temperature in Delhi can ______ 40?C
A. Peak
B. reach
C. get
D. stand
Answer : B
Solution :
Daytime temperature in Delhi can reach 40?C
2.The growth rate of ABC Motors in 2017 was the same ________ XYZ Motors in 2016 .
A. As those of
B. As that off
C. As that of
D. As off
Answer : C
Solution :
The growth rate of ABC Motors in 2017 was the same as that of XYZ Motors in 2016.
3.Suresh wanted to lay a new carpet in his new mansion with an area of 70 55 sq. mts.
However an area of 550 sq. mts had to be left out for flower pots. If the cost of carpet is Rs.
50 per sq. mts, how much money (in Rs.) will be spent by Suresh for the carpet now?
A. Rs. 1,65,000
B. Rs. 1,92,500
C. Rs. 1,27,500
D. Rs. 2,75,000
Answer : A
3
Solution :
Area of mansion = 70 ? 55 = 3850 m
2
Area for flower pots = 550 m
2
? Area left for carpet = 3850 ? 550 = 3300m
2
? Cost = 3300 ? 50 = 165000
4.A retaining wall with measurements 30 m ? 12 m ? 6 m was constructed with bricks of
dimensions 8 cm ? 6 cm. If 60% of the wall consists of bricks used for the construction is
___________ lakhs.
A. 45
B. 30
C. 40
D. 75
Answer : A
Solution :
Volume of wall = 30 ? 12 ? 6 = 2160 m
3
= 2160 ? 106 cm
3
Total volume of bricks required = 2160 ? 106 ? 0.6 cm
3
= 1296 ? 106 cm
3
Volume of one brick = 8 ? 6 ? 6 = 288 cm
3
? No. of bricks required
= 4.5 ? 10
6
= 45 lakhs
5.Hima Das was _______ only Indian athlete to win _____________ gold for India.
A. the, many
B. an, the
C. an, a
4
D. the, a
Answer : D
Solution :
Hima Das was the only Indian athlete to win a gold for India.
6.Population of state X increased by x% and the population of state Y increased by y% from
2001 to 2011. Assume that x is greater than y. Let P be the ratio of the population of state X
to state Y in a given year. The percentage increase in P from 2001 to 2011 is_____________
A. x ? y
B.
C.
D.
Answer : C
Solution :
Let population of X is ?A? in 2001
and Population of Y is ?B? in 2001
? Population of A in 2011
& Population of B in 2011
Given,
5
% increase in P
7.The Newspaper report that over 500 hectares of tribal land spread across 28 tribal
settlements in Mohinitampuram forest division have already been ?alienated?. A top forest
official said, ?First the tribals are duped out of their land holdings. Second, the families thus
rendered landless are often forced to encroach further into the forests?.
On the basis of the information available in the paragraph, _______ is/are responsible for
duping the tribals.
A. The newspaper
B. Landless families
C. forest officials
D. it cannot be inferred who
Answer : D
Solution :
?it cannot be inferred who?
From given information, nobody can be held responsible.
8.An oil tank can be filled by pipe X in 5 hours and pipe Y in 4 hours, each pump working on
its own. When the oil tank is full and the drainage hole is open, the oil is drained in 20 hours.
6
If initially the tank was empty and someone started the two pumps together but left the
drainage hole open, how many hours will it tak for the tank to be filled? (Assume that the rate
of drainage is independent of the head)
A. 2.50
B. 1.50
C. 2.00
D. 4.00
Answer : A
Solution :
Pipe X will fill how much in one hour tank
Pipe Y will fill how much in one hour tank
Drainage will drain out how much water in 1 hour tank
? Total tank filled in one hour
tank gets filled in = 1 hour
? Full (i) tank gets filled in
9.Mohan, the manager, wants his four workers to work in pairs. No paper should work for
more than 5 hours. Ram and Johan have worked together for 5 hours. Krishna and Amir have
7
worked as a team for 2 hours. Krishan does not want to work with Ram whom should mohan
allot to work with Johan, if we wants all the workers to continue working?
A. Amir
B. Krishna
C. Ram
D. None of the three
Answer : B
Solution :
Conditions given:
(i) Ram & John have worked for 5 hours.
(ii) Krishna doesn?t want to work with Ram.
(iii) No pair should work beyond 5 hours.
Hence, Krishna should work with John to satisfy the above conditions.
10.?Popular Hindi fiction, despite ? or perhaps because of ? its wide reach, often does not
appear in our cinema. As ideals that viewers are meant to look up to rather than identify with,
Hindi film protagonisits usually read books of apsirational value: textbooks, English books,
or high value literature?.
Which one of the following CANNOT be inferred from the paragraph above?
A. Textbooks, English books or high literature have apsirational value, but not popular Hindi
fiction
B. People do not look up to writers of textbooks, English book or high value literature
C. Though popular hindi fiction was wide readh, it often does not appear in the movies
D. Protagonists in Hindi movies, being ideals for viewers, read only books of aspirational
value.
Answer : B
Solution :
People do not look up to writers of textbooks, English book or high value literature.
8
Civil Engineering
11.What is curl of the vector field 2x
2
yi + 5z
2
j - 4yzk?
A. - 14zi - 2x
2
k
B. 6zi + 4xj - 2x
2
k
C. 6zi + 8xyj + 2x
2
yk
D. -14zi + 6yj + 2x
2
k
Answer : A
Solution :
12.Analysis of a water sample revealed that the sample contains the following species.
9
Concentrations of which of the species will be required to compute alkalinity?
A.
B.
C.
D.
Answer : A
Solution :
H2CO3 and HCO3
-
never come together
13.The value of the function f(x) is given at n distinct values of x and its value is to be
interpolated at the point x
*
using all the n points. The estimate is obtained first by the
Lagrange polynomial, denoted by IL, and then by the Newton polynomial, denoted by IN.
Which one of the following statements is correct?
A. IL is always greater than IN
B. No definite relation exists between IL and IN.
C. IL is always less than IN
D. IL and IN are always equal
Answer : B
Solution :
Lagrange?s form is more efficient when you have to interpolate several data sets on the same
data point.
Newton?s form is more efficient when you have to interpolate data incrementally. So no
relationship between both.
14.If the fineness modulus of a sample of the fine aggregates is 4.3, the mean size of the
particles in the sample is between
10
A. 150 ?m and 300 ?m
B. 2.36 mm and 4.75 mm
C. 300 ?m and 600 ?m
D. 1.18 mm and 2.36 mm
Answer : D
Solution :
150 ?m, 300 ?m, 600 ?m, 1.18 mm,
2.36 mm, 4.75 mm, 10 mm, 20 mm,
40 mm, 80 mm
150 ? 1
300 ? 2
600 ? 3
4.75 - 6
15.The command area of a canal grows only one crop, i.e., wheat. The base period of wheat
is 120 days and its total water requirement, ?, is 40 cm. If the canal discharge is 2 m
3
/s, the
area, in hectares, rounded off to the nearest integer, which could be irrigated (neglecting all
losses) is ______________
Answer :
Solution :
B = 120 days
? = 0.4 m
and ? = 8.64B/D
? D = 2592 ha per (m
3
/s)
? For 2m
3
/sec water, area will be 5184 ha
11
16.The characteristic compressive strength of concrete required in a project is 25 MPa and
standard deviation in the observed compressive strength expected at site is 4 MPa. The
average compressive strength of cubes tested at different water-cement (w/c) ratios using the
same material as is used for the project is given in the table.
The water-cement ratio (in percent, round off to the lower integer) to be used in the mix
is________
Answer :
Solution :
fck = 25 ; ? = 4 MPa
fm = fck + 1.65? = 31.6 MPa
Using interpolation
= 46.7 (Rounded off to the lowest integer).
17.A solid sphere of radius, r, and made of material with density ?s, is moving through the
atmosphere (constant pressure, p) with a velocity, ?. The net force ONLY due to atmospheric
pressure (Fp) acting on the sphere at any time, t, is
A.
B. Zero
C. ?r
2
p
D. 4?r
2
p
Answer : B
Solution :
Force = area ? P
12
Net force will be zero as pressure acts from all sides.
18.An earthen dam of height H is made of cohesive soil whose cohesion and unit weight are c
and ?, respectively. If the factor of safety against cohesion is Fc, the Taylor?s stability
A.
B.
C.
D.
Answer : C
Solution :
Taylor?s stability number,
19.A closed thin walled tube has thickness, t, mean enclosed area within the boundary of the
centrline of tube?s thickness, Am, and shear stress ?. Torsional moment of resistance, T of the
section would be
A.
B.
13
C.
D.
Answer : A
Solution :
20.For a channel section subjected to a downward vertical shear force at its centroid, which
one of the following represents the correct distribution of shear stress in flange and web?
A.
B.
C.
14
D.
Answer : C
Solution :
Standard result
21.The degree of static indeterminancy of the plane frame is shown in the figure is ________
Answer :
Solution :
Ds = 3C ? R'
C = 6
Ds = (3 ? 6 ? 2) ? 1 (due to hinge)
= 15
15
22.Structural failures considered in the mechanistic method of bituminous pavement design
are
A. Shear and slippage
B. Fatique and Rutting
C. Fatique and shear
D. Rutting and shear
Answer : B
Solution :
As per IRC66:2012
23.Which one of the options contains ONLY primary air pollutants?
A. Ozone and peroxyacetyl nitrate
B. Nitrogen oxides and peroxyacetyl nitrate
C. Hydrocarbons and nitrogen oxides
D. Hydrocarbons and ozone
Answer : C
Solution :
Ozone and PAN are secondary air pollutants.
24.The following inequality is true for all x close to 0.
What is the value of
A. 2
B. 1/2
C. 0
16
D. 1
Answer : A
Solution :
It is form
L?s hospital rule (differentiate)
Putting 0 everywhere ? still form.
Differentiating numerator and denominator again,
25.The velocity field in a flow system is given by v = 2i + (x + y)j + (xyz)k. The acceleration
of the fluid at (1, 1, 2) is
A. j + k
B. 2i + 10 k
C. 4j + 10k
D. 4i + 12 k
Answer : C
Solution :
17
and
= 2 + (x + y) + (xyz)(0) + 0
and
= 2(yz) + (x + y)(xz) + (xyz)(xy) + 0
az = 2(1 ? 2) + (1 + 1)(1 ? 2) + (1 ? 1
? 2) (1?1)
= 10k
Therefore,
26.A steel column is restrained against both translation and rotation at one end and is
restrained only against rotation but free to translate at the other end. Theoretical and design
(IS: 800 ? 2007) values, respectively, of effective length factor of the column are
18
A. 1.0 and 1.0
B. 1.2 and 1.0
C. 1.2 and 1.2
D. 1.0 and 1.2
Answer : D
Solution :
As per IS:800-2007
27.Euclindean norm (length) of the vector [4 ?2 ? 6]
T
is
A. ?48
B. ?24
C. ?12
D. ?56
Answer : D
Solution :
The Euclidean norm assigns to each vector the length of its arrow. Because of this,
the Euclidean norm is often known as the magnitude. So,
Length
28.An inflow hydrograph is routed through a reservoir to produce an outflow hydrograph.
The peak flow of the inflow hydrograph is PI and the time of occurrence of the peak is tI. The
peak flow of the outflow hydrograph is P0 and the time of occurance of the peak is t0. Which
one of the following statements is correct?
A. PI < P0 and tI > t0
B. PI > P0 and tI > t0
C. PI < P0 and tI < t0
D. PI > P0 and tI < t0
Answer : D
Solution :
19
Pl > Po ; tl < to
29.Construction of a new building founded on a clayey soil was completed in January In
January 2014, the average consolidation settlement of the foundation in clay was recorded as
10 mm. The ultimate consolidation settlement was estimated in design as 40 mm.
Considering double drainage to occur at the clayey soil site, the expected consolidation
settlement in January 2019 (in mm, round off to the nearest integer) will be _____________
Answer :
Solution :
Ultimate consolidation = 40 mm
Recorded consolidation = 10 mm
? Total recorded consolidation
? 40 ? 0.375
20
30.The notation ?SC? as per Indian standard Soil Classification System refers to
A. Clayey silt
B. Sandy clay
C. Calyey sand
D. Silty clay
Answer : C
Solution :
SC : clayey sand
31.The speed-density relationship in a mid-block section of a highway follows the
Greenshield?s model. If the free flow speed is vf and the jam density is kj, the maximum flow
observed on this ection is
A.
B.
C. fvkj
D.
Answer : D
Solution :
?(1)
21
32.An anisotropic soil deposit has coefficient of permeability in vertical and horizontal
directions as kz and kx, respectively. For constructing a flow net, the horizontal dimension of
the problem?s geometry is transformed by a multiplying factor of
A.
B.
C.
D.
Answer : C
Solution :
Flow net for anisotropic soil.
?(i)
If we transformed geometry in x direction let x cordinate be transformed to the new
coordinate xt by the transformation.
22
?(ii)
From eq. (i) & (ii),
Hence prove
So, multiplied factor
33.The Laplace transform of sinh (at) is
A.
B.
C.
D.
Answer : C
Solution :
Laplace transform of sinh (at) =
23
34.The data from a closed traverse survey PQRS (run in the clockwise direction) are given in
the table
The closing error for the traverse PQRS (in degrees) is________
Answer :
Solution :
n = 4 (number of sides of closed traverse)
(2n ? 4) ? 90? = 360?
so, error in included angle
= (88 + 92 + 94 + 89) ? 360 = +3?
35.A vehicle is moving on a road of grade +4% at a speed of 20 m/s. Consider the coefficient
of rolling friction as 0.46 and acceleration due to gravity as 10 m/s
2
. On applying brakes to
reach a speed of 10 m/s, the required braking distance (in m, round off to nearest integer)
along the horizontal, is ______.
Answer :
Solution :
Given: grade = +4%
V1 = 20 m/sec.
f = 0.46
g = 10 m/sec.
V1 = 10 m/sec.
24
We know,
36.A broad gauge railway line passes through a horizontal curved section (radius = 875 m) of
length 200 m. The allowable speed on this portion is 100 km/h. For calculating the cant,
consider the gauge as centre-to-centre distance between the rail heads, equal to 1750mm, The
maximum permissible cant (in mm, round off to 1 decimal place) with respect to the centreto-
centre distance between the rail heads is ______.
Answer :
Solution :
Given data:
R = 875 mm
Allowable speed = 100 kmph
Gauge length G = 1750 mm
Allowable cant
37.When a specimen of M25 concrete is loaded to a stress level of 12.5 MPa, a strain of 500
? 10
?6
is recorded. If this load is allowed to stand for a long time, the strain increases to 1000
? 10
?6
. In accordance with provisions of IS: 456-2000, considering the long-term effects, the
effective modulus of elasticity of the concrete (in MPa) is ________
Answer :
Solution :
25
Short term strain = 500 ? 10
?6
Long term strain = 1000 ? 10
?6
So, creep coefficient,
? = 1
Long-term effective modulus
= 12500 N/mm
2
= 12500 MPa
or
38.The probability density function of a continuous random variable distributed uniformly
between x and y (for y > x) is
A.
B. x ? y
C. y ? x
D.
Answer : D
Solution :
Probability density function of a uniformly distributed random variable.
26
39.The uniform arrival and uniform service rates observed on an approach road to a
signalized intersection are 20 and 50 vehicles/minutes, respectively. For this signal, the red
time is 30 s, the effective green time is 30 s, and the cycle length is 60s. Assuming that
initially there are no vehicles in the queue, the average delay per vehicle using the approach
road during a cycle length (in s, round off to 2 decimal places) is _______
Answer :
Solution :
Average delay per vehicle
= 12.5 sec
40.A rolled I-section beam is supported on a 75 mm wide bearing plate as shown in the
figure. Thickness of flange and web of the I-section are 20 mm and 8mm, respectively. Root
27
radius of the I-section is 10mm. Assuming: material yield stress,
fy = 250 MPa and partial safety factor for material, ?mo = 1.10
As per IS: 800-2007, the web bearing strength (in kN, round off to 2 decimal places) of the
beam is _______
Answer :
Solution :
Effective area in bearing = [75 + 2.5 (flange thickness + root radius)] ? 8
= [75 + 2.5 (20 + 10)] ? 8
= 1200 mm
2
so, web bearing strength
= 272.73 kN
41.The critical bending compressive stress in the extreme fibre of a structural steel section is
1000 MPa. It is given that the yield strength of the steel is 250 MPa, width of flange is 250
mm and thickness of flange is 15 mm. As per the provisions of IS: 800-2007, the
nondimensional slendeness ratio of the steel crosssection is
28
A. 0.50
B. 2.00
C. 0.25
D. 0.75
Answer : A
Solution :
Non-dimensional slenderness ratio
42.At the foot of a spillyway, water flows at a depth of 23 cm with a velocity of 8.1 m/s, as
shown in the figure.
The flow enters as an M-3 profile in the long wide rectangular channel with bed
slope and Manning?s n = 0.A hydraulic jump is formed at a certain distance from
the foot of the spillway. Assume the acceleration due to gravity, g = 9.81 m/s
2
. Just before the
hydraulic jump, the depth of flow y1 (in m, round off to 2 decimal places) is _________
Answer :
Solution :
Given data:
y = 0.23 m
V = 8.1 m/sec.
Slope,
29
h = 0.015
g = 9.81 m/sec
2
q = yV = 8.1 ? 0.23
= 1.863 m
3
/sec/m
It is given that flow enters as an M-3 profile in the long wide rectangular channel with bed
slope
From manning equation at M3 profile section.
[for wide channel R = y]
The flow profile will follow normal depth (yn) after jump.
For wide rectangular channel,
Here, yn = y 2 = 1.11 m
30
Again,
? y 1 = 0.417 m < y c [supercritical]
43.Consider the reactor shown in the figure. The concentration (in mg/l) of a compound in
the influent and effluent are C0 and C, flow rate through the reactor is Q m
3
/h respectively.
The compound is degraded in the reactor following the first order reactions. The mixing
condition of the reactor Complete Mix Flow Reactor (CMFR) or a plug-flow reactor (PFR).
The length of the reactor can be adjusted in these two mixing conditions to LCMFR and
LPER while keeping the cross-section of the reactor constant. Assuming steady state and for
C/C0 = 0.8, the value of LCMFR/LPER (round off to 2 decimal places) is _______
Answer :
Solution :
A = constant
Q = AL
For plug flow
[ detention time for plug flow reaction]
For completely mix = C =
[ detention time for completely mix reaction]
31
Also,
44.A series of perpendicular offsets taken from a curved boundary wall to a straight survey
line at an interval of 6 m are 1.22, 1.67, 2.04, 2.34, 2.14, 1.87, and 1.15 m. The area (in m2,
round off to 2 decimal places) boundary by the survey line, curved boundary wall, the first
and the last offsets, determined using Simpson?s rule, is _______.
Answer :
Solution :
Area by simpson?s rule
45.A water treatment plant treats 6000 m
3
of water per day. As a part of the treatment
process, discrete particles are required to be settled in a clarifier. A column test indicates that
an overflow rate of 1.5 m per hour would produce the desired removal of particles through
32
settling in the clarifier having a depth of 3.0 m. The volume of the required clarifier, (in m
3
,
round off to 1 decimal place) would be
Answer :
Solution :
Given data:
Flow rate = 6000 m
3
/day
Over flow rate = 1.5 m/hour
= 1.5 ? 24 m/day = 36 m/day
Flow area
= 166.67 m
2
Volume required for clarifier = Flow area ? depth
= 166.67 ? 3 = 500 m
3
46.A flexible pavement has the following class of loads during a particular hour of the day.
i. 80 buses with 2-axles (each axle load of 40 kN);
ii. 160 trucks with 2-axles (front and rear axle loads of 40 kN and 80 kN, respectively)
The equivalent standard axle load repetitions for this vehicle combination as per IRC:37-2012
would be
A. 320
B. 250
C. 240
D. 180
Answer : D
Solution :
33
= 5 + 5 + 10 + 160
= 180
47.Constant head permeability tests were performed on two soil specimens, S1 and SThe
ratio of height of the two specimens (LS1: LS2) is 1.5, the ratio of the diameter of specimens
(DS1:DS2) is 0.5, and the ratio of the constant head (hs1:hs2) applied on the specimens is 2.0. If
the discharge from both the specimens is equal, the ratio of the permeability of the soil
specimens (ks1:ks2) is ________
Answer :
Solution :
For constant head permeability test,
Q ? discharge
L ? length of specimen
a ? area of cross-section of specimen
h ? constant head
Given,
34
48.A long uniformly distributed load of 10 kN/m and a concentrated load of 60 kN are
moving together on the beam ABCD shown in the figure (not drawn to scale). The relative
positions of the two loads are not fixed. The maximum shear force (in kN, round off to the
nearest integer) caused at the internal hinge B due to the two loads is __________
Answer :
Solution :
35
Maximum
49.A square footing of 2m sides rests on the surface of a homogeneous soil bed having the
properties: cohesion c = 24 kPa, angle of internal friction ? = 25?, and unit weight ? = 18
kN/m
3
. Terzaghi?s bearing capacity factor ? = 25? are Nc = 25.1, Nq = 12.7, N? = 9.7, N?c =
14.8, N?q = 5.6, and N?? = 3.The ultimate bearing capacity of the foundation (in kPa, round
off to 2 decimal places) is ______.
Answer :
Solution :
Here, ? < 29
o
Footing rests on the ground
Hence, q = 0
so,
use, accordingly.
50.The dimensions of a soil sampler are given in the table.
36
For this sampler, the outside clearance ratio (in percent, round off to 2 decimal places) is
_________.
Answer :
Solution :
Given:
D4 = 90 mm
D2 = 100 mm
51.A plane frame shown in the figure (not to scale) has linear elastic springs at node H. The
spring constants are kx = ky = 5 ? 10
5
kN/m
3
and k? = 3 ? 10
5
kNm/rad.
For the externally applied moment of 30 kNm at node F, the rotation (in degrees, round off to
3 decimals) observed in the rotational spring at node H is ________
Answer :
37
Solution :
R ? 3 = 30
? R = 10 kN
From right side of FBD
R ? 3 = K? . ?
= 10
?4
rad = 0.0057
= 0.006 degree
52.Chlorine is used as the disinfectant in a municipal water treatment plant. It achieves 50
percent of disinfection efficiency measured in terms of killing the indicator microorganisms
(E-Coli) in 3 minutes. The minimum time required to achieve 99 percent disinfection
efficiency would be
A. 9.93 minutes
B. 11.93 minutes
C. 21.93 minutes
D. 19.93 minutes
Answer : D
Solution :
Disinfection eff.
38
Again,
? t = 19.93 min.
53.A confined aquifer of 15 m constant thickness is sandwiched between two aquicludes as
shown in the figure (not drawn to scale)
The heads indicated by two piezometers P and Q are 55.2 m and 34.1 m, respectively. The
aquifer has a hydraulic conductivity of 80 m/ day and its effective porosity is 0.If the distance
between the piezometers is 2500 m, the time taken by the water to travel through the aquifer
from piezometer location P to Q (in days, round off to 1 decimal place) is ______.
Answer :
Solution :
Given,
39
= 9.259 ? 10
?4
m/s
h = 55.2 ? 34.1 = 21.1 m
L = 2500 m
n = 0.25
B = 15 m
As per Darcy?s law,
V = ki
Seepage velocity
54.For a plane stress problem, the state of stress at a point P is represented by the stress
element as shown in the figure.
40
By how much angle (?) in degrees the stress element should be rotated in order to get the
planes of maximum shear stress?
A. 26.6
B. 48.3
C. 31.7
D. 13.3
Answer : C
Solution :
41
Coordinates of
= (30, 0)
In ?ABC ,
BC = 80 ? 30 = 50 MPa
AB = 25 MPa
Angle to be rotated
55.The inverse of the matix is
42
A.
B.
C.
D.
Answer : B
Solution :
Det. of matrix, |A| = 2 (12 ? 2) ? 3(16 ? 1) + 4(8 ? 3)
= 20 ? 45 + 20
= ?5
(adj A) = (cof A)'
cof of A11 = 12 ? 2 = 10
43
cof of A12 = ?(16 ? 1) = ?15
cof of A13 = 8 ? 3 = 5
cof of A21 = ?(12 ? 8) = ?4
cof of A22 = (8 ? 4) = 4
cof of A23 = ?(4 ? 3) = ?1
cof of A31 = (3 ? 12) = ?9
cof of A32 = ?(2 ? 16) = 14
cof of A33 = (6 ? 12) = ?6
adj A = (cof A)'
56.Two identical pipes (i.e. having the same length, same diameter, and same roughness) are
used to withdraw water from a reservoir. In the first case, they are attached in series and also
discharge freely into the atmosphere. In the second case, they are attached in parallel and
friction factor is same in both the cases, the ratio of the discharge in the parallel arrangement
to that in the series arrangement (round off to 2 decimal places) is _____
Answer :
Solution :
44
Case (1): Series connection,
then ?(i)
Case (ii) : parallel connection
then, ...(ii)
then from equation (i) and (ii)
57.A camera with a focal length of 20 cm fitted in an aircraft is used for taking vertical aerial
photographs of a terrain. The average elevation of the terrain is 1200 m above mean sea level
(MSL). What is the height above MSL at which an aircraft must fly in order to get the aerial
photographs at a scale of 1:8000?
A. 3200 m
B. 2800 m
45
C. 2600 m
D. 3000 m
Answer : B
Solution :
Given that
f = 0.2 m
h = 1200 m
then,
58.Raw municipal solid waste (MSW) collected from a city contains 70% decomposable
material that can be converted to methane. The water content of the decomposable material is
35%. An elemental anlysis of the decomposable material yields the following mass percent.
C : H : O: N : other = 44 : 6 : 43 : 0.8 : 6.2
The methane production of the decomposable material is governed by the following
stoichiometric relation
CaHbOcNd + nH2O ? mCH4 + sCO2 + dNH3
Given atomic weights: C = 12, H = 1, O = 16, N = The mass of methane produced (in grams,
round off to 1 decimal place) per kg of raw MSW will be _______
Answer :
Solution :
For the MSW, the phase diagram is as follows
46
From the mass percent given,
12a = 44x
b = 6x
16c = 43x
14d = 0.8x
? = 100x
100x = wt of decomposable waste
= 0.455 kg
? a = 16.683, b = 27.3,
c = 12.228, d = 0.26
From the balance of reaction we have
a = m + s ?(A)
b + 2n = 4m + 3d ?(B)
c + n = 2s ?(C)
? 2c + 2n = 4s ?(D)
? b ? 2c = 4m ? 4s + 3d
? m - s = 0.516
47
? m + s = 16.683
? m = 8.6
? Methane produced = 8.6 ? 16 g = 137.6 g
59.In the context of provisions relating to durability of concrete, consider the following
assertion:
Assertion (1): As per IS 456-2000, air entrainment to the extent of 3% to 6% is required for
concrete exposed to marine environment.
Assertion (2): The equivalent alkali content (in terms of Na2O equivalent) for a cement
containing 1% and 0.6% of Na2O and K2O, respectively, is approximately 1.4% (rounded to 1
decimal place).
Which one of the following statements is correct?
A. Assertion (1) is true and Assertion (2) is FALSE
B. Both Assertion (1) and Assertion (2) are TRUE
C. Both Assertion (1) and Assertion 2) are FALSE
D. Assertion (1) is false and Assertion (2) is TRUE
Answer : B
Solution :
As per IS-456, where freezing and thawing actions under wet conditions exit, inhance
durability can be obtained by the use of suitable air entraining admixture.
The entrained air percentage can vary from 4 ? 1 to 5 ? 1 (i.e. 3 to 6%) depending on size of
aggregate. Hence, Assertion (1) is correct.
Equivalent alkali content (in terms of Na2O equivalent)
= Na2O + 0.658 ? K2O
Molecular ratio of Na2O to K2O = 0.658
= 1% + 0.658 ? 0.6% = 1.39
? 1.4 (rounded to 1 decimal place).
48
60.The ordinates, u of a 2-hour unit hydrograph (i.e. for 1 cm of effective rain), for a
catchment are shown in the table.
A 6-hour storm occurs over the catchment such that the effective rainfall intensity is 1
cm/hour for the first two hours, zero for the next two hours, and 0.5 cm/hour for the last two
hours. If the base flow is constant at 5 m
3
/s, the peak flow due to this storm (in m
3
/s, round
off to 1 decimal place) will be ________
Answer :
Solution :
0?2 hr ? total rainfall = 1 ? 2 = 2 cm
2?4 hr ? total rainfall = 0 cm
4?6 hr ? total rainfall = 2 ? 0.5 = 1 cm
Maximum ordinate is 92 m
3
/sec.
Maximum flood discharge = 92 + 5
49
= 97 m
3
/sec
61.The speed-density relationship of a highway is given as
u = 100 ? 0.5 k
where, u = speed in km per hour, k = density in vehicles per km. The maximum flow (in
vehicles per hour, round off to the nearest integer) is ______
Answer :
Solution :
Given that,
u = 100 ? 0.5 k
Maximum flow
u = uf (1- k / kj )
u = 100(1- (0.5k/100))
= 100(1- k/200)
therefore, uf = 100 and kj = 200
so, maximum flow
= 5000 vehicles/hr
62.Consider the hemi-spherical tank of radius 13 m as shown in the figure (not drawn to
scale). What is the volume of water (in m
3
) when the depth of water at the centre of the tank
is 6 m?
50
A. 78?
B. 468 ?
C. 156 ?
D. 396 ?
Answer : D
Solution :
Volume generated by the Y axis revolution equation of circle
? (x + 0)
2
+ (y - 13)
2
= 13
2
Volume
= 396 ?
63.A timber pile of length 8m and diameter of 0.2m is driven with a 20 kN drop hammer,
falling freely from a height of 1.5m. The total penetration of the pile in the last 5 blows is 40
mm. Use the engineering news record expression. Assume a factor of safety of 6 and
empirical factor (allowing reducing in the theoretical set, due to energy losses) of 2.5 cm. The
safe load carrying capacity of the pile (in kN, round off to 2 decimal places) is ______
Answer :
Solution :
Engineering news record expression
51
s = Penetration of pile per hammer blow.
C = 2.5 cm = 0.025 m
so,
then safe load carrying capacity
64.A 2 m ? 4 m rectangular footing has to carry a uniformly distributed load of 120 kPa. As
per the 2:1 dispersion method of stress distribution, the increment in vertical stress (in kPa) at
a depth of 2 m below the footing is __________.
Answer :
Solution :
Increment in the vertical stress
65.An ordinary differential equation is given below:
The solution for the above equation is
52
(Note: K denotes a constant in the options)
A. y = K ln x
B. y = Kx ln x
C. y = Kxe
x
D. y = Kxe
?x
Answer : A
Solution :
taking ?nx = t
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This post was last modified on 18 December 2019