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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
High air-fuel ratio in gas turbines

Improves thermal efficiency
Reduces exhaust temperature
Increases power output
Do not damage turbine blades

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Compressors, Gas Turbines and Jet Engines
The gas in cooling chamber of a closed cycle gas turbine is cooled at

Constant pressure
Constant temperature
None of the listed here
Constant volume

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Compressors, Gas Turbines and Jet Engines
Euler's equation is applicable for

Axial compressor
All of these
Centrifugal compressor
Pumps

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Compressors, Gas Turbines and Jet Engines
In a centrifugal compressor, the highest Mach number leading to shock wave in the fluid flow occurs at

Diffuser outlet radius
Impeller outlet radius
Diffuser inlet radius
Impeller inlet radius

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Compressors, Gas Turbines and Jet Engines
The ratio of the increase in pressure in rotor blades to total increase in pressure in the stage is called

Degree of reaction
Pressure coefficient
Pressure ratio
Slip factor

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

Has no effect on
Decreases
Increases
None of these

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