Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Summer 3rd Sem New 2134003 Geomatics Engineering Previous Question Paper
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ?III (NEW) EXAMINATION ? SUMMER 2019
Subject Code: 2134003 Date: 11/06/2019
Subject Name: Geomatics Engineering
Time: 02:30 PM TO 05:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
4. Support your answer with neat sketches wherever possible.
Q.1 (a) Briefly explain the followings: Plunging, Latitude, Closed Traverse, Independent
coordinates.
04
(b) Discuss with sketch temporary adjustment of Vernier transit theodolite. 04
(c) Find the magnitude and direction of closing error if any for the following
observations of Traverse Survey.
Line AB BC CD DA
Length (m) 156.4 178.3 234.9 202.5
Bearing 79
0
42? 151
0
30? 252
0
20? 355
0
12?
06
Q.2 (a) Explain with sketch principle of stadia method and derive the formula
D = KS+C
04
(b) Due to some problems with equipment, the bearings of two sides were not taken
for a closed traverse ABCDEA. From the available data, compute the bearings of
the lines DE and EA.
Line Length (m) Bearing
AB 240.6 N 38
0
46? E
BC 260.1 N 80
0
47? E
CD 220.7 S 12
0
15? E
DE 250.4 ?
EA 275.5 ?
10
OR
(b) Prepare Gale?s Traverse Table to adjust the closing error of clockwise traverse for
the following data:
Line Length (m) Station Angle WCB
P 72
0
20? 00?
PQ 106.2 40
0
30? 00?
Q 50
0
9? 00?
QR 115.7
R 56
0
40? 00?
RP 81.5
10
Q.3 (a) Derive the expression for determining horizontal distance and R.L. when line of
sight is inclined upward and staff held vertical for Tacheometry Survey.
04
(b) Determine the horizontal distance between theodolite station and 6m long
horizontal subtense bar perpendicular to line of sight when the included angle is
50?.
04
(c) Following observations are obtained in tacheometry survey.
From To Bearing Vertical
Angle
Hair readings (m)
P Q 300
0
+8
0
20? 1.050 1.650 2.250
P R 10
0
+10
0
10? 2.180 2.980 3.780
06
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Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ?III (NEW) EXAMINATION ? SUMMER 2019
Subject Code: 2134003 Date: 11/06/2019
Subject Name: Geomatics Engineering
Time: 02:30 PM TO 05:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
4. Support your answer with neat sketches wherever possible.
Q.1 (a) Briefly explain the followings: Plunging, Latitude, Closed Traverse, Independent
coordinates.
04
(b) Discuss with sketch temporary adjustment of Vernier transit theodolite. 04
(c) Find the magnitude and direction of closing error if any for the following
observations of Traverse Survey.
Line AB BC CD DA
Length (m) 156.4 178.3 234.9 202.5
Bearing 79
0
42? 151
0
30? 252
0
20? 355
0
12?
06
Q.2 (a) Explain with sketch principle of stadia method and derive the formula
D = KS+C
04
(b) Due to some problems with equipment, the bearings of two sides were not taken
for a closed traverse ABCDEA. From the available data, compute the bearings of
the lines DE and EA.
Line Length (m) Bearing
AB 240.6 N 38
0
46? E
BC 260.1 N 80
0
47? E
CD 220.7 S 12
0
15? E
DE 250.4 ?
EA 275.5 ?
10
OR
(b) Prepare Gale?s Traverse Table to adjust the closing error of clockwise traverse for
the following data:
Line Length (m) Station Angle WCB
P 72
0
20? 00?
PQ 106.2 40
0
30? 00?
Q 50
0
9? 00?
QR 115.7
R 56
0
40? 00?
RP 81.5
10
Q.3 (a) Derive the expression for determining horizontal distance and R.L. when line of
sight is inclined upward and staff held vertical for Tacheometry Survey.
04
(b) Determine the horizontal distance between theodolite station and 6m long
horizontal subtense bar perpendicular to line of sight when the included angle is
50?.
04
(c) Following observations are obtained in tacheometry survey.
From To Bearing Vertical
Angle
Hair readings (m)
P Q 300
0
+8
0
20? 1.050 1.650 2.250
P R 10
0
+10
0
10? 2.180 2.980 3.780
06
2
Take K=100, C=0, Staff held vertically. Compute length and gradient of line QR.
OR
Q.3 (a) Derive an expression for Trigonometric levelling to determine horizontal distance
and top RL of inaccessible object when instrument stations in same vertical plane
with elevated object and instrument axes are at different levels.
04
(b) Explain with sketch direct levelling process for steep ground. 04
(c) Find the reduced level of a church spire C from the following observations taken
from two stations A and B 70m apart. Angle BAC = 60
o
, Angle ABC = 50
o
, Angle
of elevation from A to the top of spire = 22
o
, Angle of elevation from B to top of
spire = 18
o
, Staff reading from A on B.M. = 2.5m, Staff reading from B on the
same B.M. = 0.5m, R.L. of B.M. = 114.20m. Also, determine distances AC and
BC.
06
Q.4 (a) Describe with sketches different types of ?Triangulation Systems? and their
suitability.
04
(b) Briefly explain: Well-conditioned triangle, Laplace station, Reduction of center,
False station.
04
(c) The altitudes of two proposed stations A and B, 80 km apart are respectively 210
m and 500 m. The intervening obstructions situated at C, 50 km apart from A has
an elevation of 300 m. Ascertain if A and B are inter visible, and if necessary, find
by how much B should be raised so that the line of sight must nowhere be less
than 3 m above the surface of the ground.
06
OR
Q.4 (a) What is EDM? Briefly explain principle of EDM. 04
(b) Discuss the special features and field applications of Total Station. 05
(c) From an eccentric station S, 30 m to the east of the main station B, the following
angles were measured: Angle BSA = 76
0
20? 30?, Angle CSA = 50
0
10? 26?. The
stations S and A are to the opposite sides of the line BC. Calculate the correct
angle ABC if the lengths AB and BC are 5305.3 m and 4805.9 m respectively.
05
Q.5 (a) What is sounding? Explain with sketch: Sounding Machine, Fathometer. 05
(b) Briefly explain DGPS survey. 04
(c) What is meant by setting out works? What is the procedure of fixing an alignment
of Tunnel?
05
OR
Q.5 (a) Explain with sketches methods of locating sounding. 04
(b) What is LIDAR? Explain its applications in detail. 05
(c) What are the methods to set out building plan? Explain step by step procedure of
any one method.
05
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This post was last modified on 20 February 2020