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Hydraulics and Fluid Mechanics
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)
Cd x L2g [H1 - Ha]
Cd x L2g [H13/2 - Ha3/2]
Cd x L2g [H12 - Ha2]
Cd x L2g [H15/2 - Ha5/2]
Correct Answer:
Cd x L2g [H13/2 - Ha3/2]
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