An aircraft with a turbojet engine flies at a velocity of 100 m/s. If – McqOptions

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1.	An aircraft with a turbojet engine flies at a velocity of 100 m/s. If the jet exhaust velocity is 300 m/s, the propulsive efficiency of the engine, assuming a negligible fuel-air ratio, is
A.	0.33
B.	0.50
C.	.67
D.	.8
Answer» C. .67

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