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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
Ratio of indicated H.P. and brake H.P. is known as

Mechanical efficiency
Adiabatic efficiency
Isothermal efficiency
Volumetric efficiency

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Compressors, Gas Turbines and Jet Engines
Diffuser in a compressor is used to

Increase velocity
Make the flow streamline
Convert pressure energy into kinetic energy
Convert kinetic energy into pressure energy

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

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

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Compressors, Gas Turbines and Jet Engines
In which case the air-fuel ratio is likely to be maximum?

Multi cylinder engine
4-stroke diesel engine
4-stroke petrol engine
Gas turbine

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Compressors, Gas Turbines and Jet Engines
A closed cycle gas turbine works on

Rankine cycle
Carnot cycle
Ericsson cycle
Joule cycle

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Compressors, Gas Turbines and Jet Engines
The mass of gas turbine per kW developed is about ________ as that of an I.C. engine.

Same
One sixth
One fourth
One-half

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