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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
1 m of air at atmospheric condition weighs approximately

1.3 kg
1.0 kg
2.2 kg
0.5 kg

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Compressors, Gas Turbines and Jet Engines
Diffuser in a compressor is used to

Make the flow streamline
Convert pressure energy into kinetic energy
Convert kinetic energy into pressure energy
Increase velocity

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Compressors, Gas Turbines and Jet Engines
In the aircraft propellers

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

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

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

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

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Compressors, Gas Turbines and Jet Engines
Efficiency of gas turbine is increased by

Inter cooling
Adding a regenerator
All of the listed here
Reheating

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MORE MCQ ON Compressors, Gas Turbines and Jet Engines

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