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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
The air entry velocity m a rocket as compared to aircraft is

Zero
Same
Less
More

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Compressors, Gas Turbines and Jet Engines
The thrust on the rotor in a centrifugal compressor is produced by

Tangential component
None of these
Axial component
Radial component

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Compressors, Gas Turbines and Jet Engines
The material commonly used for air craft gas turbine is

Timken, Haste alloys
High alloy steel
Duralumin
Stainless steel

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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

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

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Compressors, Gas Turbines and Jet Engines
Euler's equation can be used for

Pumps
Radial flow compressors
Axial flow compressors
All of these

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Compressors, Gas Turbines and Jet Engines
The pressure ratio in gas turbines is of the order of

2.5423611111111
0.084027777777778
0.37569444444444
0.16736111111111

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