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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
The efficiency of jet engine is

Lower at low speed
Higher at high altitudes
Higher at high speed
Same at all altitudes

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Compressors, Gas Turbines and Jet Engines
In jet engines, paraffin is usually used as the fuel because of its

Low freezing point
High calorific value
Both (A) and (C) above
Ease of atomisation

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Compressors, Gas Turbines and Jet Engines
The reason for volumetric efficiency of reciprocating compressor being less than 100 percent is

Superheating in compressor
Pressure drop across the valves
Clearance volume and leakages
All of these

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Compressors, Gas Turbines and Jet Engines
Isothermal compression efficiency can be attained by running the compressor

At average speed
At very slow speed
At zero speed
At very high speed

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Compressors, Gas Turbines and Jet Engines
A simple turbojet engine is basically

Ramjet engine
Gas turbine engine equipped with a propulsive nozzle and diffuse
A propeller system
Chemical rocket engine

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Compressors, Gas Turbines and Jet Engines
In a single stage, single acting reciprocating air compressor without clearance volume, the work-done is maximum during

None of these
Isentropic compression
Polytropic compression
Isothermal compression

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MORE MCQ ON Compressors, Gas Turbines and Jet Engines

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