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UPSC Civil Service Exam Questions - Engineering

Q1:

In the alignment of an irrigation channel wherefrom offtakes have to be provided at regular intervals, changes in the given channel parameters are made use of. The correct sequence of the decreasing order of preference of these parameters is

A Width, slope, depth

B Width, depth, slope

C Depth, slope, width

D Depth, width, slope

ANS:B - Width, depth, slope

Option C is correct. The depth should be such that the off take channel runs full. Our main preference is depth and then to stop silting we have to focus on slope and at last the width.