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mechanical engineering hydraulics and fluid mechanics
1. The discharge over a rectangular weir, considering the velocity of approach, is (where H1 = Total height of water above the weir = H + Ha H = Height of water, over the crest of the weir, and Ha = Height of water, due to velocity of approach)
(A): Cd x L2g [H1 - Ha]
(B): Cd x L2g [H12 - Ha2]
(C): Cd x L2g [H13/2 - Ha3/2]
(D): Cd x L2g [H15/2 - Ha5/2]
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