For the most economical trapezoidal open channel, – McqOptions

MCQOPTIONS

1.	For the most economical trapezoidal open channel,
A.	half of the top width must be equal to one of the sloping sides
B.	the hydraulic mean depth must be equal to half the depth of flow
C.	the semicircle drawn with top width as diameter must touch the three sides of the channel
D.	All of these.
Answer» E.

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