The flow in a channel is said to be non-uniform, if – McqOptions

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1.	The flow in a channel is said to be non-uniform, if
A.	free water surface of an open channel is not parallel to the bed of channel
B.	head needed to overcome frictional reistance is less than the drop in elevation of channel bed
C.	head needed to overcome frictional resistance is more than the drop in elevation of channel bed
D.	all the above.
Answer» E.

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