A jet of water discharging from a 40 mm diameter orifice has a diamet – McqOptions

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1.	A jet of water discharging from a 40 mm diameter orifice has a diameter of 32 mm at its vena contracta. The coefficient of contraction is
A.	0.46
B.	0.64
C.	0.78
D.	0.87
Answer» C. 0.78

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