Hydraulics And Fluid Mechanics

The efficiency of jet propulsion for a ship with inlet orifices at right angles to the direction of motion of ship is given by
A. [2(Vr - v) v]/ Vr²
B. [2(Vr + v) v]/ Vr²
C. [(Vr - v) v]/ Vr
D. [(Vr + v) v]/ Vr

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Answer: Option A

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