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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
Reheating in gas turbine results in

Both (A) and (B) above
Decrease of work ratio
Decrease of thermal efficiency
Increase of work ratio

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Compressors, Gas Turbines and Jet Engines
Out of the following, from where you will prefer to take intake for air compressor

From a side where cooling tower is located nearby
From coal yard side
From an air conditioned room maintained at 20°C
From outside atmosphere at 1°C

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Compressors, Gas Turbines and Jet Engines
The maximum combustion pressure in gas turbine as compared to I.C. engine is

Same
Depends on other factors
Less
More

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Compressors, Gas Turbines and Jet Engines
Axial flow compressor resembles

Turbine
Reciprocating pump
Centrifugal pump
Sliding vane compressor

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Compressors, Gas Turbines and Jet Engines
Work ratio of a gas turbine may be improved by

Both (A) and (C) above
Decreasing the compression work
Increasing the compression work
Increasing the turbine work

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Compressors, Gas Turbines and Jet Engines
The volumetric efficiency of a compressor falls roughly as follows for every 100 m increase in elevation

0.1%
0.5%
1.0%
5%

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