A channel is said to be of most economical cross-section, if – McqOptions

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1.	A channel is said to be of most economical cross-section, if
A.	it gives maximum discharge for a given cross-sectional area and bed slope
B.	it has minimum wetted perimeter
C.	it involves lesser excavation for the designed amount of discharge
D.	all of the above
Answer» E.

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