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Compressors, Gas Turbines and Jet Engines

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

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

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Compressors, Gas Turbines and Jet Engines
The temperature of air at the beginning of the compression stroke is ________ the atmospheric temperature.

None of these
Less than
Equal to
More than

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Compressors, Gas Turbines and Jet Engines
The most efficient method of compressing air is to compress it

Isochronically
Isentropically
Isothermally
Adiabatically

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Compressors, Gas Turbines and Jet Engines
The blades of gas turbine are made of

High nickel alloy
Stainless steel
High alloy steel
Carbon steel

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Compressors, Gas Turbines and Jet Engines
In a double acting compressor, the air is compressed

In one cylinder
In two cylinders
In a single cylinder on both sides of the piston
In two cylinders on both sides of the piston

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Compressors, Gas Turbines and Jet Engines
Reheating in gas turbine results in

Decrease of thermal efficiency
Both (A) and (B) above
Increase of work ratio
Decrease of work ratio

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