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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
The ideal efficiency of simple gas turbine cycle depends on

Maximum cycle temperature
Pressure ratio
Minimum cycle temperature
All of these

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Compressors, Gas Turbines and Jet Engines
The ratio of the discharge pressure to the inlet pressure of air is called

Compression ratio
Volumetric efficiency
Expansion ratio
Compressor efficiency

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

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

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Compressors, Gas Turbines and Jet Engines
The minimum work required for a three stage reciprocating air compressor is ___ the work required for each stage.

Three times
Double
Equal to
Six times

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Compressors, Gas Turbines and Jet Engines
What will be the volume of air at 327°C if its volume at 27°C is 1.5 m³/ mt?

6 m³/ mt.
18 m³/ mt.
3 m³/ mt.
1.5 m³/ mt.

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Compressors, Gas Turbines and Jet Engines
The closed cycle in gas turbines

In never used
Provides lesser flexibility
Provides greater flexibility
Is used when gas is to be burnt

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