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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
The air-fuel ratio in gas turbines is of the order of

15: 1
50: 1.
7: 1
30: 1

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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
Mechanical efficiency of gas turbines as compared to I.C engines is

Lower
None of these
Higher
Same

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Compressors, Gas Turbines and Jet Engines
The compressed air may be used

All of the listed here
In gas turbine plants
For operating pneumatic drills
In starting and supercharging of I.C. engines

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Compressors, Gas Turbines and Jet Engines
The degree of reaction is usually kept ________ for all types of axial flow compressors.

0.2
0.4
0.5
0.3

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Compressors, Gas Turbines and Jet Engines
Axial flow compressor resembles

Centrifugal pump
Reciprocating pump
Turbine
Sliding vane compressor

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