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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
Gas turbine as compared to steam turbine

Requires less space for installation
Has compressor and combustion chamber
Has less efficiency
All of these

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Compressors, Gas Turbines and Jet Engines
The temperature of air at the beginning of the compression stroke is ________ the atmospheric temperature.

Equal to
None of these
Less than
More than

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

More
Less
None of the listed here
Same

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Compressors, Gas Turbines and Jet Engines
Volumetric efficiency is

Reciprocal of compression ratio
The ratio of stroke volume to clearance volume
Index of compressor performance
The ratio of the air actually delivered to the amount of piston displacement

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

1000°C
1500°C
700°C
2000°C

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Compressors, Gas Turbines and Jet Engines
The pressure ratio for an open cycle gas turbine compared to closed cycle gas turbine of same h.p. is

Same
Low/high depending on make and type
High
Low

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