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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
After-cooler is used to

Cool the air
Decrease the delivery temperature for ease in handling
Cause moisture and oil vapour to drop out
Reduce volume

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Compressors, Gas Turbines and Jet Engines
The absolute pressure of air at the outlet of a compressor is called

None of the listed here
Back pressure
Discharge pressure
Critical pressure

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Compressors, Gas Turbines and Jet Engines
The work ratio of simple gas turbine cycle depends on

All of these
Minimum cycle temperature
Pressure ratio
Maximum cycle temperature

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

Atmosphere
Discharge nozzle
Back to the compressor
Vacuum

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Compressors, Gas Turbines and Jet Engines
Only rocket engines can be propelled to space because

They are not air breathing engines
They have high propulsion efficiency
They can generate very high thrust
These engines can work on several fuels

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Compressors, Gas Turbines and Jet Engines
The volume of air sucked by the compressor during its suction stroke is called

Swept volume
Compressor capacity
Free air delivery
None of these

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