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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
A rocket works with maximum overall efficiency when air craft velocity is equal to the

Twice the jet velocity
Average of the jet velocity
Jet velocity
Half the jet velocity

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Compressors, Gas Turbines and Jet Engines
Gas turbines for power generation are normally used

To enable start thermal power plant
To supply peak load requirements
In emergency
To supply base load requirements

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Compressors, Gas Turbines and Jet Engines
Euler's equation is applicable for

Pumps
All of these
Axial compressor
Centrifugal compressor

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Compressors, Gas Turbines and Jet Engines
The volume of air delivered in a medium capacity air compressor per unit time is

None of these
Above 5 m³/s
0.15 to 5 m³/s
0.1 to 1.2 m³/s

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Compressors, Gas Turbines and Jet Engines
The maximum compression ratio in an actual single stage axial flow compressor is of the order of

0.043055555555556
0.00070833333333333
0.045138888888889
0.048611111111111

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Compressors, Gas Turbines and Jet Engines
In the aircraft propellers

The propulsive matter is caused to flow around the propelled body
All of these
Propulsive matter is ejected from within the propelled body
Its functioning does not depend on presence of air

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