Surveying Questions Set 13:
What is the dip of the magnetic needle at the equator?
Solution:
The slope correction for a length of 30 m along a gradient of 1 in 20 is ______.
Solution:
The purpose of a levelling staff is to establish:
Solution:
A levelling work is prepared by the observation taken by dumpy level and staff. Find out the missing data (x).
Solution:
When two points of surveying are mutually invisible the following method of ranging is adopted?
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The following table gives the fore bearings and back bearings in a triangular closed traverse. Find out the corrected fore bearing of CA.
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What will be the length of one division of the Vernier scale when the length of one division of the main scale is 0.2 mm and the least count of the Vernier scale is 0.12 mm?
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A bubble tube has a sensitivity of 40 seconds per 2 mm division. The error in staff reading, on a vertically held staff at a distance of 100 m, caused by a bubble 3 divisions out of center is:
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The magnetic bearing of a line AB was N 59° 30' W in the year 1967, when the declination was 4° 10' E. If the present declination is 3° W, the magnetic bearing in terms of WCB (West Compass Bearing) of the line is
Solution:
An instrument was setup at P and angle of elevation to a vane 4 m above the foot of staff held at Q was 9 ° 30'. The horizontal distance between P and Q was known to be 2000 m. What is the R.L. (in m) of staff station Q?
[Given that the R.L. of instrument axis was 2650.38 m and consider refraction and curvature corrections]
Solution:
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