Civil Engineering MCQJE Level Civil Engineering
The error due to imperfect adjustment of line of collimation is eliminated by:
SurveyingSurveying and GeomaticsMEDIUM
Choose the correct answer
A
Taking only one reading
B
Increasing staff height
C
Changing staff colour
D
Equalizing backsight and foresight distances
Correct Answer
D. Equalizing backsight and foresight distances
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Equal sight lengths make collimation error cancel in levelling.
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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.