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Hydraulic mean depth (Dm) for a circular pipe of diameter ‘D’ flowing full is 0.25 D. For a circular channel, at Dm = 0.3 D, gives the condition for the maximum ?

 (A)  Flow rate

 (B)  Mean velocity

 (C)  Both ‘a’ & ‘b’

 (D)  Neither ‘a’ nor ‘b’

Submitted By :Ali Uppal

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