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Compressors, Gas Turbines and Jet Engines

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

Polytropic compression
Isothermal compression
None of these
Isentropic compression

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Compressors, Gas Turbines and Jet Engines
In turbo fan engine, the jet velocity as compared to turbojet engine is

More
Less
May be less or more depending upon speed
Same

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Compressors, Gas Turbines and Jet Engines
Isothermal compression efficiency, even when running at high speed, can be approached by using

Cold water spray
Both (A) and (B) above
Multistage compression
Fully insulating the cylinder

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

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

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Compressors, Gas Turbines and Jet Engines
Gas turbine as compared to steam turbine

Has compressor and combustion chamber
All of these
Has less efficiency
Requires less space for installation

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Compressors, Gas Turbines and Jet Engines
For perfect intercooling in a two stage compressor

p₁ = p3
p₂/p₁ = p₃/p₂
p₁/p₃ = p₂/p₁
p₁ = p₂ p3

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MORE MCQ ON Compressors, Gas Turbines and Jet Engines

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