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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
The area of actual indicator diagram on an air compressor as compared to area of ideal indicator diagram is

Same
More
More/less depending on compressor capacity
Less

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Compressors, Gas Turbines and Jet Engines
The air is delivered ________ in one revolution in case of a three lobbed rotor.

Two times
Six times
Three times
Four times

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Compressors, Gas Turbines and Jet Engines
Ramjet engine

Produces a jet consisting of plasma
Requires no air for its operation
Is self operating at zero flight speed
Is not self operating at zero flight speed

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Compressors, Gas Turbines and Jet Engines
Air-fuel ratio in a jet engine will be of the order of

0.41736111111111
0.83402777777778
0.62569444444444
2.5006944444444

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Compressors, Gas Turbines and Jet Engines
Atmospheric pressure is 1.03 kg/cm and vapour pressure is 0.03 kg/cm. The air pressure will be

1.06 kg/cm²
0.53 kg/cm²
1.03 kg/cm²
1.00 kg/cm²

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Compressors, Gas Turbines and Jet Engines
The pressure of air at the beginning of the compression stroke is ___ the atmospheric pressure.

None of the listed here
More than
Equal to
Less than

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