MCQ

Engineering mcq

Monday, 22 February 2016

propulsive efficiency

Q.7 Which of the following aircraft engines has the highest propulsive efficiency at a cruising Mach number of less than 0.5?
(A) Turbofan engine 
(B) Turbojet engine
(C) Turboprop engine
(D) Ramjet engine

Correct Answer:-
(C)
Propulsive efficiency depends on specific thrust,at low Mach Number 0.5 or 0.6, turboprop engine have the superior efficiency compare to other engines.

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