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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
The ratio of the net work obtained from the gas turbine plant to the turbine work is known as

Work ratio
Pressure ratio
None of these
Compression ratio

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

Compressor capacity
Swept volume
Free air delivery
None of these

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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
Equal to
Six times
Double

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Compressors, Gas Turbines and Jet Engines
In a single stage, single acting reciprocating air compressor, without clearance, the work-done on the air during isentropic compression is ________ the heat required to raise the temperature of air from T₁ to T₂ at a constant pressure.

Equal to
Less than
Greater than
None of these

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Compressors, Gas Turbines and Jet Engines
The efficiency of jet engine is

Lower at low speed
Higher at high speed
Higher at high altitudes
Same at all altitudes

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Compressors, Gas Turbines and Jet Engines
The inlet pressure is always ___ the discharge pressure.

Equal to
None of the listed here
More than
Less than

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