Topic: Fluid Mechanics
The actual velocity at vena contracta for flow through an orifice from a reservoir of height H=
- A. $\sqrt{2gH}$
- B. $C_{V}\sqrt{2gH}$
- C. $\sqrt{2gH/C_{v}}$
- D. $C_{d}\sqrt{2gH}$
Answer: B. $C_{V}\sqrt{2gH}$
Explanation: Actual velocity at vena contracta for flow through an orifice from a reservoir of height H is given by $V_{actual}=C_{v}\sqrt{2gH}$, where $C_{v}$ is the coefficient of velocity.