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Compressors, Gas Turbines and Jet Engines

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
Which is false statement about multistage compression?

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

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Compressors, Gas Turbines and Jet Engines
The efficiency of the vane blower is (where W₁ = Workdone due to compression, and W₂ = Workdone due to back flow)

W₂/(W₁ + W₂)
(W₁ + W₂)/W₂
(W₁ + W₂)/W₁
W₁/(W₁ + W₂)

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Compressors, Gas Turbines and Jet Engines
A compressor at high altitudes will require ___ power.

Same
Less
None of the listed here
More

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Compressors, Gas Turbines and Jet Engines
In a centrifugal compressor, the flow of air is ________ to the axis of compressor.

Inclined
None of these
Perpendicular
Parallel

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Compressors, Gas Turbines and Jet Engines
Maximum temperature in a gas turbine is of the order of

700°C
1000°C
1500°C
2000°C

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