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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
In a single acting reciprocating compressor, the suction, compression and delivery of air takes place in ________ of the piston.

Four strokes
Three strokes
One stroke
Two strokes

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Compressors, Gas Turbines and Jet Engines
Reheating in a multistage expansion gas turbine ________ compressor work.

None of these
Increases
Has no effect on
Decreases

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Compressors, Gas Turbines and Jet Engines
Rotary compressors are used for delivering

Large quantities of air at low pressures
Small quantities of air at low pressures
Large quantities of air at high pressures
Small quantities of air at high pressures

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Compressors, Gas Turbines and Jet Engines
Which is false statement about advantages of multistage compressor in comparison to single stage compressor?

Better mechanical balance
Less loss of air due to leakage past the cylinder
Less power requirement
Lower volumetric efficiency

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Compressors, Gas Turbines and Jet Engines
More than one stage will be preferred for reciprocating compressor if the delivery pressure is more than

10 kg/cm²
14.7 kg/cm²
2 kg/cm²
6 kg/cm²

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Compressors, Gas Turbines and Jet Engines
The blades of gas turbine are made of

Stainless steel
Carbon steel
High alloy steel
High nickel alloy

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