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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
The weight per horse power ratio for gas in Turbine as compared to I.C. engine and steam turbine is

Lower
Higher
None of these
Same

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Compressors, Gas Turbines and Jet Engines
The ratio of work-done per cycle to the stroke volume of the compressor is known as

Mean effective pressure
Compressor capacity
Compressor efficiency
Compression ratio

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Compressors, Gas Turbines and Jet Engines
A closed gas turbine in which fuel is burnt directly in the air is not possible because of

Paucity of O2
High friction losses
Increasing gas temperature
High specific volume

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Compressors, Gas Turbines and Jet Engines
The maximum propulsion efficiency of a turbojet is attained at around following speed

2400 km/hr
1700 km/hr
550 km/hr
1050 km/hr

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Compressors, Gas Turbines and Jet Engines
Gas turbine cycle with regenerator

Allows high compression ratio
Increases thermal efficiency
Allows operation at very high altitudes
Decreases heat loss is exhaust

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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
Impeller inlet radius
Diffuser inlet radius

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MORE MCQ ON Compressors, Gas Turbines and Jet Engines

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