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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
The efficiency of jet engine is

Higher at high speed
Higher at high altitudes
Lower at low speed
Same at all altitudes

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Compressors, Gas Turbines and Jet Engines
Work ratio of a gas turbine plant is ratio of

Work done by turbine and net work output
Work done by turbine and heat supplied
Net work output and heat supplied
Net work output and work done by turbine

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Compressors, Gas Turbines and Jet Engines
A centrifugal compressor works on the principle of

Generating pressure directly
Conversion of pressure energy into kinetic energy
Centripetal action
Conversion of kinetic energy into pressure energy

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

Volumetric efficiency
Adiabatic efficiency
Mechanical efficiency
Isothermal efficiency

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Compressors, Gas Turbines and Jet Engines
If the flow of air through the compressor is parallel to its axis, then the compressor is

Axial flow compressor
Turbo compressor
Reciprocating compressor
Centrifugal compressor

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Compressors, Gas Turbines and Jet Engines
A gas turbine used in air craft should have

High h.p. and low weight
High speed and high h.p.
Small frontal area and high h.p.
Low weight and small frontal area

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MORE MCQ ON Compressors, Gas Turbines and Jet Engines

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