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Compressors, Gas Turbines and Jet Engines

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

Vacuum
Atmosphere
Back to the compressor
Discharge nozzle

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Compressors, Gas Turbines and Jet Engines
The ratio of outlet whirl velocity to blade velocity in case of centrifugal compressor is called

None of these
Slip factor
Velocity factor
Velocity coefficient

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

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Compressors, Gas Turbines and Jet Engines
For slow speed large capacity compressor, following type of valve will be best suited

Mechanical valve of the Corliss, sleeve, rotary or semi rotary type
Any of the above
Poppet valve
Disc or feather type

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Compressors, Gas Turbines and Jet Engines
Actual compression curve is

Better than isothermal and adiabatic
Same as adiabatic
In between isothermal and adiabatic
Same as isothermal

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Compressors, Gas Turbines and Jet Engines
The volumetric efficiency of a compressor falls roughly as follows for every 5°C increase in atmospheric temperature

0.005
0.01
0.05
0.001

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MORE MCQ ON Compressors, Gas Turbines and Jet Engines

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