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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
The volumetric efficiency of compressor with increase in compression ratio will

Increase
Decrease
May increase or decrease depending on clearance volume
Remain same

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Compressors, Gas Turbines and Jet Engines
In which case the air-fuel ratio is likely to be maximum?

4-stroke petrol engine
Gas turbine
Multi cylinder engine
4-stroke diesel engine

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Compressors, Gas Turbines and Jet Engines
A 3 m³/min compressor means that it

Delivers 3 m³/ min of compressed air
Compresses 3 m³/min of standard air
Compresses 3 m³/ min of free air
Delivers 3 m³/ min of compressed air at delivery pressure

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Compressors, Gas Turbines and Jet Engines
In a single acting reciprocating air compressor, without clearance, the compression of air may be

Isothermal
Isentropic
Polytropic
Any one of these

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

p₂/p₁ = p₃/p₂ = p₄/p₃
p₃/p₁ = p₄/p₂
p₁ p₂ = p₃ p₄
p₁ p₃ = p₂ p₄

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Compressors, Gas Turbines and Jet Engines
Volumetric efficiency is

Index of compressor performance
Reciprocal of compression ratio
The ratio of stroke volume to clearance volume
The ratio of the air actually delivered to the amount of piston displacement

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MORE MCQ ON Compressors, Gas Turbines and Jet Engines

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