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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
In a jet engine, the air-fuel ratio is

2.5006944444444
2.0840277777778
1.2506944444444
1.6673611111111

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Compressors, Gas Turbines and Jet Engines
The air power of the compressor is also known as

Frictional power
Brake power
Indicated power
None of these

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Compressors, Gas Turbines and Jet Engines
Isothermal compression efficiency, even when running at high speed, can be approached by using

Both (A) and (B) above
Multistage compression
Cold water spray
Fully insulating the cylinder

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

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Compressors, Gas Turbines and Jet Engines
The overall thermal efficiency of an ideal gas turbine plant is (where r = Pressure ratio)

1 - r ɣ-1
r ɣ-1
1 - (1/r) ɣ/ɣ-1
1 - (1/r) ɣ-1/ɣ

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Compressors, Gas Turbines and Jet Engines
The ratio of the increase in pressure in rotor blades to total increase in pressure in the stage is called

Slip factor
Pressure ratio
Pressure coefficient
Degree of reaction

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MORE MCQ ON Compressors, Gas Turbines and Jet Engines

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