Compressors, Gas Turbines and Jet Engines
Stalling of blades in axial flow compressor is the phenomenon of

Air stream blocking the passage
Air stream not able to follow the blade contour
Unsteady periodic and reversed flow
Motion of air at sonic velocity

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Compressors, Gas Turbines and Jet Engines
Pick up the correct statement

Gas turbines have their blades similar to steam turbine
Large gas turbines use radial inflow turbines
Gas turbine's blade will appear as impulse section at the hub and as a reaction section at tip
Gas turbines use both air and liquid cooling

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

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

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