GUJARAT TECHNOLOGICAL UNIVERSITY
BE- SEMESTER-IV (NEW) EXAMINATION - WINTER 2020
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Subject Code:3140601 Date:09/02/2021Subject Name:Surveying
Time:02:30 PM TO 04:30 PM Total Marks:56
Instructions:
1. Attempt any FOUR questions out of EIGHT questions.
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2. Make suitable assumptions wherever necessary.3. Figures to the right indicate full marks.
Q.1 (a) Define Plane table surveying with its advantages and disadvantages. 03
(b) What is principle of plane tabling? State sources of errors during plane 04
tabling.
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(c) What is use of planimeter? When will you apply zero circle? How do 07you find the zero circle?
Q.2 (a) What is least count? How will you find least count of an instrument? 03
(b) Which are the methods of measuring horizontal angles? Briefly 04
describe repetition method.
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(c) Explain the temporary adjustments of theodolite. 07 Q.3 (a) Define the term probable value and probable error. 03
(b) Discuss the method of achieving horizontal and vertical control in 04
setting out works.
(c) Enumerate different rules used for calculation of area and discuss in 07
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detail the Simpson’s one third rule. Q.4 (a) Differentiate between plane surveying and geodetic surveying. 03
(b) What do you mean by strength of figure in triangulation work? 04
(c) Find out minimum height of signal required at B so that the line of 07
sight may not pass near the ground than 1.5 m if A and B two stations
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are 50 km apart and have-elevations 250 m and 230 m respectively.Ground may be assumed to have uniform level of 200 m.
Q.5 (a) Explain principle of tachometry. 03
(b) What is tacheometer? Explain the procedure of finding its coefficient 04
in the field:
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(c) Derive the expression for horizontal and vertical distances by the fixed 07hair method when the staff is held vertically & the measured angle is
that of elevation.
Q.6 (a) What is transition curve? State the requirements of a transition curve. 03
(b) Derive the equation for degree of curve on the basis of (i) Arc 04
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definition (i1) Chord definition.(c) Draw the sketch explaining elements of simple circular curve. Define: 07
Point of intersection, angle of deflection, point of curvature, tangent
distance, long chord, mid ordinate, external distance.
Q.7 (a) Explain Electromagnetic spectrum. 03
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(b) Explain working principle of GPS. 04(c) What is GPS? Give its uses and application. 07
Q.8 (a) Explain basic principle of Remote sensing. 03
(b) What is GIS? Discuss component of GIS. 04
(c) What is total station? Describe uses of total station in field of civil 07
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