Civil Engineering - Surveying

31. 

Accuracy of 'fix' by two point problem, is

A. bad
B. good
C. not reliable
D. unique.

Answer: Option C

Explanation:

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32. 

A bearing of a line is also known as

A. magnetic bearing
B. true bearing
C. azimuth
D. reduced bearing

Answer: Option B

Explanation:

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33. 

True meridians are generally preferred to magnetic meridians because

A. these converge to a point
B. these change due to change in time
C. these remain constant.
D. None of these.

Answer: Option C

Explanation:

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34. 

Pick up the correct statement from the following :

A. the apparent error on reversal is twice the actual error
B. the correction may be made equal to half the observed discrepancy.
C. the good results may be obtained from a defective instrument by reversing and taking the mean of two erroneous results
D. all the above.

Answer: Option D

Explanation:

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35. 

If θ is the slope of the ground and l is the measured distance, the correction is

A. 2l sin2 θ/2
B. 2l cos2 θ/2
C. 2l tan2 θ/2
D. 2l cot2 θ/2.

Answer: Option A

Explanation:

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