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Compressors, Gas Turbines and Jet Engines

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

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

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Compressors, Gas Turbines and Jet Engines
The stagnation pressure rise in a centrifugal compressor takes place

In the diffuser and impeller
In the impeller only
In the inlet guide vanes only
In the diffuser only

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Compressors, Gas Turbines and Jet Engines
Ratio of indicated h.p. to shaft h.p. in known as

Isothermal efficiency
Volumetric efficiency
Compressor efficiency
Mechanical efficiency

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Compressors, Gas Turbines and Jet Engines
Which is false statement about multistage compression?

Volumetric efficiency is high
Power consumption per unit of air delivered is low
It is best suited for compression ratios around 7:1
The moisture in air is condensed in the inter-cooler

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Compressors, Gas Turbines and Jet Engines
The compression ratio for the compressor is always _________ unity.

Equal to
Less than
None of these
More than

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Compressors, Gas Turbines and Jet Engines
Air-fuel ratio in a jet engine will be of the order of

0.62569444444444
2.5006944444444
0.41736111111111
0.83402777777778

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