PTU Punjab Technical University B-Tech May 2019 Question Papers 5th Semester Civil Engineering (CIV)
Total No. of Pages : 02
Total No. of Questions : 09
B.Tech.(CE) (2011 Onwards) (Sem.?5)
ENVIRONMENTAL ENGINEERING?I
Subject Code : BTCE-505
M.Code : 70516
Time : 3 Hrs. Max. Marks : 60
INSTRUCTIONS TO CANDIDATES :
1.
SECTION-A is COMPULSORY consisting of TEN questions carrying T WO marks
each.
2.
SECTION-B contains FIVE questions carrying FIVE marks each and students
has to attempt any FOUR questions.
3.
SECTION-C contains T HREE questions carrying T EN marks each and students
have to attempt any T WO questions.
SECTION-A
Q1 Answer briefly :
a) How do you estimate the water demand for an `industrial town'?
b) Compare the applicability of geometric progression method and arithmetic progression
method.
c) "Quantity and quality are equal considerations in water supply scheme planning".
Comment.
d) What is meant by `development of wells'?
e) What is meant by dynamic head in case of pumps?
f) What is meant by MPN?
g) What is meant by economical diameter of pumping main?
h) State the Hazen Williams formula and explain the terms.
i) Differentiate between water softening and demineralization.
j) How does the per capita demand vary in planning of rural water supply and urban water
supply in India?
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SECTION-B
Q2 Sketch and explain the components of a river intake.
Q3 Explain the importance of Turbidity and Conductivity as water quality parameters. What
kind of impurities they generally indicate?
Q4 List the suitability and criteria for choosing different types of pumps used in water supply.
Q5 Draw and explain the components and working of a rapid sand filter.
Q6 For a 40,000 m3/d water plant an alum dosage of 42 mg/L with flocculation at a G.t value
of 4.32 ? 104 that produces optimal results. If the water temperature is 20?C, determine the
requirement of alum per week and volume of the flocculator tank.
SECTION-C
Q7 The data of demand of a town is as shown below:
Time (hrs)
Demand (Million Litres)
00-04
0.36
04-08
0.84
08-12
1.50
12-16
0.85
16-20
0.73
20-24
0.45
Calculate the storage capacity, if the pumping into the tank is restricted from 0600 hrs to
1800 hrs.
Q8 What are the objectives of disinfection of water? What are the qualities of a good
disinfectant? Compare the properties of any two disinfectants.
Q9 Write short notes clearly differentiating the following terms as applied to water supply.
a) Intermittent supply and continuous supply.
b) Single supply and dual supply.
c) Metered and non-metered supply.
d) Water quality criteria and standards.
NOTE : Disclosure of Identity by writing Mobile No. or Making of passing request on any
page of Answer Sheet will lead to UMC against the Student.
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This post was last modified on 04 November 2019