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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
The volumetric efficiency of compressor with increase in compression ratio will

May increase or decrease depending on clearance volume
Decrease
Increase
Remain same

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Compressors, Gas Turbines and Jet Engines
In a closed cycle gas turbine, the air is compressed

Isentropically
None of these
Isothermally
Polytropically

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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

Vacuum
Back to the compressor
Atmosphere
Discharge nozzle

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Compressors, Gas Turbines and Jet Engines
The type of rotary compressor used in aeroplanes, is of

Centrifugal type
Radial flow type
None of these
Axial flow type

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Compressors, Gas Turbines and Jet Engines
For an irreversible gas turbine cycle, the efficiency and work ratio both depend on

Pressure ratio alone
Both pressure ratio and maximum cycle temperature
Minimum cycle temperature alone
Maximum cycle temperature alone

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Compressors, Gas Turbines and Jet Engines
Reheating in multistage expansion gas turbine results in

Reduction in compressor work
Decrease of heat loss in exhaust
High thermal efficiency
Maximum work output

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