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UPSC Civil Service Exam Questions - Engineering

Q1:

A channel of bed slope 0.0009 carries a discharge of 30 m3/s when the depth of flow is 1.0 m. What is the discharge carried by an exactly similar channel at the same depth of flow if the slope is decreased to 0.0001 ?

A 10 m3/s

B 15 m3/s

C 60 m3/s

D 90 m3/s

ANS:A - 10 m3/s

D is the correct answer.

Q is inversely proportional to @radi;s.