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UPSC Civil Service Exam Questions - Engineering

Q1:

For flow under a sluice gate where the upstream depth is 1.2 m and the depth at vena contracta is 0.3 m, the discharge per meter width would be nearly

A 0.36 m3

B 1.5 m3

C 1.7 m3

D 4.0 m3

ANS:B - 1.5 m3

Here, q = √2g. H1. H2/√h1 + h2.
= approx 1.5.