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mechanical engineering hydraulics and fluid mechanics
1. Coefficient of resistance is the ratio of
(A): actual discharge through an orifice to the dieoretical discharge
(B): actual velocity of jet at vena contracta to the theoretical velocity
(C): area of jet at vena contracta to the area of orifice
(D): loss of head in the orifice to the head of water available at the exit of the orifice
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