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ME Set-3
Pressure Vessels
143

Pressure Vessels and Engines MCQ with Answers

143) Turbo propeller has the^following additional feature over the turbojet

peopeller

diffuser

intercooler

turbine and combustion chamber

Answer is:

peopeller

Pressure Vessels and Engines MCQ with Answers

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Related Pressure Vessels and Engines MCQ with Answers

144) Propulsive efficiency is defined as ratio of

thrust power and fuel energy

engine output and propulsive power

propulsive power and fuel input

thrust power and propulsive power

Answer is:

thrust power and propulsive power

145) In jet engines, paraffin is usually used as the fuel because of its

high calorific value

ease of atomisation

low freezing point

(a) and (c) above

Answer is:

(a) and (c) above

146) A rocket engine for the combustion of its fuel

carries its own oxygen

uses surrounding air

uses compressed atmospheric air

does not require oxygen

Answer is:

carries its own oxygen

A rocket engine for the combustion of its fuel

147) A rocket works with maximum overall efficiency when air craft velocity is equal to the

jet velocity

twice the jet velocity

half the jet velocity

average of the jet velocity

Answer is:

half the jet velocity

A rocket works with maximum overall efficiency when air craft velocity is equal to the

Pressure Vessels and Engines MCQ with Answers

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