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

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

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

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
Gas turbines have their blades similar to steam turbine
Large gas turbines use radial inflow turbines

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Compressors, Gas Turbines and Jet Engines
In a turbo jet engine, subsequent to heat addition to compressed air, to get the power output, the working substance is expanded in

Exit nozzle, which is essentially an isentropic process
Exit nozzle, which is a constant volume process
Turbine blades, which is a constant volume process
Turbine blades, which is essentially an isentropic process

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