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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
Gas turbine blades are given a rake

Equal to zero
Opposite to the direction of motion of blades
In the direction of motion of blades
Depending on the velocity

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Compressors, Gas Turbines and Jet Engines
The mass of gas turbine per kW developed is about ________ as that of an I.C. engine.

One sixth
Same
One-half
One fourth

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Compressors, Gas Turbines and Jet Engines
Which is false statement about multistage compression?

Power consumption per unit of air delivered is low
Volumetric efficiency is high
It is best suited for compression ratios around 7:1
The moisture in air is condensed in the inter-cooler

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Compressors, Gas Turbines and Jet Engines
Temperature of gases at end of compression as compared to exhaust gases in a gas turbine is

Can't be compared
Higher
Lower
Equal

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Compressors, Gas Turbines and Jet Engines
Euler's equation can be used for

All of these
Pumps
Axial flow compressors
Radial flow compressors

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Compressors, Gas Turbines and Jet Engines
In jet engines, for the efficient production of large power, fuel is burnt in an atmosphere of

Vacuum
Oxygen alone
Compressed air
Atmospheric air

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