In jet propulsion of ships, when the inlet orifices are at right angles to the direction of motion of the ships, the efficiency of propulsion η isWhere:V = Absolute velocity of the issuing jetu = Velocity of the moving ship

Question

TuteeHUB · Accepted Answer

$\frac{{2u}}{{{{\left( {V + u} \right)}^2}}}$

TuteeHUB · Answer

$\frac{{2{u^2}}}{{V + u}}$

TuteeHUB · Answer

$\frac{{2Vu}}{{{{\left( {V + u} \right)}^2}}}$

TuteeHUB · Answer

$\frac{{2Vu}}{{V + 2u}}$

1.	In jet propulsion of ships, when the inlet orifices are at right angles to the direction of motion of the ships, the efficiency of propulsion η isWhere:V = Absolute velocity of the issuing jetu = Velocity of the moving ship
A.	\(\frac{{2{u^2}}}{{V + u}}\)
B.	\(\frac{{2Vu}}{{{{\left( {V + u} \right)}^2}}}\)
C.	\(\frac{{2u}}{{{{\left( {V + u} \right)}^2}}}\)
D.	\(\frac{{2Vu}}{{V + 2u}}\)
Answer» C. \(\frac{{2u}}{{{{\left( {V + u} \right)}^2}}}\)

In jet propulsion of ships, when the inlet orifices are at right angles to the direction of motion of the ships, the efficiency of propulsion η isWhere:V = Absolute velocity of the issuing jetu = Velocity of the moving ship

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