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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
For supplying intermittent small quantity of air at high pressure, following compressor is best suited

Centrifugal
Axial
Reciprocating
Screw

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Compressors, Gas Turbines and Jet Engines
Separators in compressor installations are located

Between after-cooler and air receiver
After inter-cooler
After receiver
Before inter-cooler

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Compressors, Gas Turbines and Jet Engines
The inter-cooler pressure, for minimum work required, for a two stage reciprocating air compressor, is given by (where p₁ = Intake pressure of air, p₂ = Inter-cooler pressure, and p₃ = Delivery pressure of air)

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

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Compressors, Gas Turbines and Jet Engines
A rocket engine uses __________ for the combustion of its fuel.

Surrounding air
Compressed atmospheric air
None of these
Its own oxygen

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Compressors, Gas Turbines and Jet Engines
The work ratio of simple gas turbine cycle depends on

Minimum cycle temperature
Maximum cycle temperature
Pressure ratio
All of these

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Compressors, Gas Turbines and Jet Engines
In a closed cycle gas turbine, the air is compressed

Polytropically
None of these
Isentropically
Isothermally

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