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Compressors, Gas Turbines and Jet Engines

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

Swept volume
Compressor capacity
None of these
Free air delivery

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Compressors, Gas Turbines and Jet Engines
The clearance volume of the air compressor is kept minimum because

It greatly affects volumetric efficiency
It allows maximum compression to be achieved
It permits isothermal compression
It results in minimum work

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Compressors, Gas Turbines and Jet Engines
Pick up wrong statement. Surging phenomenon in centrifugal compressor depends on

Mass flow rate
Stagnation pressure at the outlet
Change in load
Pressure ratio

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Compressors, Gas Turbines and Jet Engines
The ideal efficiency of simple gas turbine cycle depends on

Maximum cycle temperature
All of these
Minimum cycle temperature
Pressure ratio

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Compressors, Gas Turbines and Jet Engines
Isothermal compression efficiency, even when running at high speed, can be approached by using

Both (A) and (B) above
Multistage compression
Cold water spray
Fully insulating the cylinder

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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

Discharge nozzle
Atmosphere
Back to the compressor
Vacuum

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