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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
Axial flow compressor resembles

Turbine
Reciprocating pump
Sliding vane compressor
Centrifugal pump

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Compressors, Gas Turbines and Jet Engines
Work ratio of a gas turbine may be improved by

Increasing the turbine work
Both (A) and (C) above
Decreasing the compression work
Increasing the compression work

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Compressors, Gas Turbines and Jet Engines
The volume of air sucked by the compressor during its suction stroke is called

Free air delivery
Compressor capacity
Swept volume
None of these

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Compressors, Gas Turbines and Jet Engines
Isothermal compression efficiency, even when running at high speed, can be approached by using

Both (A) and (B) above
Cold water spray
Fully insulating the cylinder
Multistage compression

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Compressors, Gas Turbines and Jet Engines
The following property is most important for material used for gas turbine blade

Creep
Toughness
Fatigue
Corrosion resistance

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

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

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