The maximum propulsive efficiency of a turbo-jet engine is at a speed of

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The maximum propulsive efficiency of a turbo-jet engine is at a speed of

Options:

A . 1000 km/h

B . 2000 km/h

C . 2400 km/h

D . 3000 km/h

Answer: Option C
Answer: (c).2400 km/h

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