Compressors, Gas Turbines and Jet Engines
In a double acting compressor, the air is compressed

In two cylinders on both sides of the piston
In a single cylinder on both sides of the piston
In one cylinder
In two cylinders

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Compressors, Gas Turbines and Jet Engines
The degree of reaction in an axial flow compressor is defined as the ratio of static enthalpy rise in the

Rotor to static enthalpy rise in the stage
Rotor to static enthalpy rise in the stator
Stator to static enthalpy rise in the stage
Stator to static enthalpy rise in the rotor

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Compressors, Gas Turbines and Jet Engines
Volumetric efficiency of a compressor without clearance volume

Increases with increase in compression ratio
May increase/decrease depending on compressor capacity
Is not dependent upon compression ratio
Decreases with increase in compression ratio

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Compressors, Gas Turbines and Jet Engines
Choose the correct statement

Gas turbines have high standby losses and require lot of maintenance
Gas turbine requires lot of cooling water
Gas turbine is capable of rapid start up and loading
Gas turbines has flat efficiency at part loads

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