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GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER-1V (NEW) EXAMINATION - WINTER 2018
Subject Code:2140601 Date:05/12/2018
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Subject Name:Advanced Surveying
Time: 02:30 PM TO 05:00 PM Total Marks: 70
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Instructions:
- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
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Q.1 (a) Describe principle of stadia method. 03
(b) What do you mean by analytic lens? How are they useful in tacheometer? 04
(c) Describe in details how total station has brought revolution in various field of 07
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surveying?
Q.2 (a) Explain principle of tacheometry 03
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(b) Explain the procedure for finding the co-efficient in the field for stadia 04constants K and C by various methods
(c) A tacheometer was set up at a station P and the following readings were 07
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obtained on a staff vertically held. Calculate the horizontal distance PQ and
R.L of Q, when the constants of instrument are 100 and 0.
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| Station | Bearing | Vertical angle | Hair readings (m) | Remark |
|---|---|---|---|---|
| P | B.M | -5°40" | 1.000 | 1.600 | 2.200 | R.L.ofBM= 175.50 m. |
| Q | +6°20' | 0.600 | 1.200 | 1.800 |
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OR
(c) Derive the expression for horizontal and vertical distances by the fixed hair 07
method when the staff is held vertically, & the measured angle is that of
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elevation
Q.3 (a) What is the object of the geodetic surveying? 03
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(b) Define base line and discuss its selection criteria 04(c) Calculate the sun’s azimuth and hour angle at sunset at a place in latitude 40° 07
N its declination is 20°N
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OR
Q.3 (a) Define True Error, Residual Error and Most probable error 03
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(b) Describe the different aspect of field work in triangulation 04(c) What is the weight of a quantity? Discuss various laws of weights. 07
Q.4 (a) What are the various corrections for base line? Discuss what is base net 03
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(b) Define Azimuth, Zenith, Nadir and Celestial pole 04
(c) Calculate the total number of photograph require to cover of 10 km X 20 km 07
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longitudinal overlap is 70%, side overlap is 30%, focal length of camera usedis 20cm, Scale of the photograph is 1:10000, Size of the photograph is 23cm X
23 cm.
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OR
Q.4 (a) Define photogrammetry & explain uses of photogrammetry 03
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(b) Derive equation for scale of vertical photograph 04(c) Define Tilt, Mosaics, Isocentre, Side lap, Crab, Principle Point, Oblique 07
photo
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Q.5 (a) Discuss active and passive remote sensing. 03
(b) What is total station? Explain the uses of Total station 04
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(c) Discuss application of remote sensing and GIS in civil 07engineering
OR
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Q.5 (a) Explain methods of digital image processing 03
(b) List various applications of remote sensing 04
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(c) What do you mean by image interpretation? Describe at least five elements of 07visual image interpretation.
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