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UPSC Civil Service Exam Questions - Engineering

Q1:

A 100 m tape is held 1 m out of line. The true length is

A 100.0050 m

B 99.9950 m

C 100.0100 m

D 99.9800 m

ANS:B - 99.9950 m

INCREMENT ALIGNMENT CORRECTION IS d^2/2l.
Where d =1 and l = 100.
100-(1/200) = 99.9950.