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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
A rotary compressor is driven by an

Engine
Either (A) or (B)
Electric motor
None of these

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

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

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Compressors, Gas Turbines and Jet Engines
A rocket engine for the combustion of its fuel

Does not require oxygen
Uses compressed atmospheric air
Uses surrounding air
Carries its own oxygen

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Compressors, Gas Turbines and Jet Engines
Maximum temperature in a gas turbine is of the order of

2000°C
1000°C
1500°C
700°C

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Compressors, Gas Turbines and Jet Engines
In a double acting compressor, the air is compressed

In one cylinder
In a single cylinder on both sides of the piston
In two cylinders on both sides of the piston
In two cylinders

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Compressors, Gas Turbines and Jet Engines
In multistage compressor, the isothermal compression is achieved by

By running compressor at very slow speed
By insulating the cylinder
Employing inter-cooler
By constantly cooling the cylinder

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