Civil Engineering - Surveying

11.
In levelling operation,
The first sight on any change point is a back sight
The second sight on any change point is a fore sight
The line commences with a fore sight and closes with a back sight
The line commences with a back sight and closes with a foresight.
Answer: Option
Explanation:
No answer description is available. Let's discuss.

12.
The apparent error on reversal is
equal to the actual error
twice the actual error
thrice the actual error
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.

13.
Magnetic declination at any place
remains constant
does not remain constant
fluctuates
changes abruptly.
Answer: Option
Explanation:
No answer description is available. Let's discuss.

14.
Systematic errors are those errors
which cannot be recognised
whose character is understood
whose effects are cumulative and can be eliminated
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.

15.
If L is in kilometres, the curvature correction is
58.2 L2 mm
64.8 L2 mm
74.8 L2 mm
78.4 L2 mm.
Answer: Option
Explanation:
No answer description is available. Let's discuss.