Question

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'

Answer: (b).mean velocity

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Q. 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

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