Civil Engineering MCQJE Level Civil Engineering
In reciprocal levelling across a river, average of two computed height differences is taken mainly to reduce:
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Choose the correct answer
A
Curvature, refraction and collimation errors
B
Magnetic dip
C
Tape pull error
D
Sag error only
Correct Answer
A. Curvature, refraction and collimation errors
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Reciprocal observations cancel nearly equal systematic errors over long sights.
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This MCQ belongs to SSC JE Civil Paper-I Technical Mock Test Series. Full tests include timed attempts, rank comparison and subject-wise analysis.