The discharge over a rectangular weir, considering the velocity of approach, is

Question

The discharge over a rectangular weir, considering the velocity of approach, is (whereH1 = H + Ha = Total height of water above the weir, H = Height of water over the crest of the weir, and Ha = Height of water due to velocity of approach)

Options:

A . (2/3) Cd × L.√2g [H1 - Ha]

B . (2/3) Cd × L. √2g [H13/2 - Ha3/2]

C . (2/3) Cd × L.√2g [H12 - Ha2]

D . (2/3) Cd × L. √2g [H15/2 - Ha5/2]

Answer: Option B

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