At Vena Contracta

Answer: D: V_act ÷ V_th

The velocity coefficient at the vena contracta is V_act ÷ V_th.

Solution:

The Coefficient of Velocity is defined as the ratio between the actual velocity of a jet at vena-contracta and the theoretical velocity of a jet.

C_v = V_act ÷ V_th

The range of C_v varies from 0.95 to 0.99.

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