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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
The inlet pressure is always ___ the discharge pressure.

Less than
None of the listed here
Equal to
More than

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Compressors, Gas Turbines and Jet Engines
Axial flow compressor has the following advantage over centrifugal compressor

Aerofoil blades are used
Larger air handling ability per unit frontal area
Higher pressure ratio per stage
Higher average velocities

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Compressors, Gas Turbines and Jet Engines
Rotary compressors are suitable for

Large discharge at high pressure
Low discharge at low pressure
Large discharge at low pressure
Low discharge at high pressure

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Compressors, Gas Turbines and Jet Engines
In jet engines the products of combustion after passing through the gas turbine are discharged into

Back to the compressor
Atmosphere
Vacuum
Discharge nozzle

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Compressors, Gas Turbines and Jet Engines
In a centrifugal compressor, an increase in speed at a given pressure ratio causes

Decrease in flow
Increase in efficiency
Increase in flow and decrease in efficiency
Increase in flow

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Compressors, Gas Turbines and Jet Engines
The work-done on a compressor will be minimum if air is taken from

The atmosphere
A source of low temperature air
A source of high temperature air
A source at 0° C

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