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Compressors, Gas Turbines and Jet Engines

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

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

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Compressors, Gas Turbines and Jet Engines
The stagnation pressure rise in a centrifugal compressor takes place

In the diffuser only
In the diffuser and impeller
In the impeller only
In the inlet guide vanes only

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Compressors, Gas Turbines and Jet Engines
The temperature of air at the beginning of the compression stroke is ________ the atmospheric temperature.

Equal to
Less than
More than
None of these

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

Same
Less
More
Zero

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Compressors, Gas Turbines and Jet Engines
A jet engine works on the principle of conservation of

Flow
Energy
Linear momentum
Mass

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Compressors, Gas Turbines and Jet Engines
For a two stage compressor, if index of compression for higher stage is greater than index of compression for lower stage, then the optimum pressure as compared to ideal case will

Decrease
Remain unaffected
Increase
Other factors control it

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MORE MCQ ON Compressors, Gas Turbines and Jet Engines

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