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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
During peak load periods, the best method of controlling compressors is

Variable speed
Start-stop motor
Relief valve
Constant speed unloader

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Compressors, Gas Turbines and Jet Engines
Reciprocating air compressor is best suited for

Small quantity of air at high pressure
Small quantity of air at low pressure
Large quantity of air at low pressure
Large quantity of air at high pressure

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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

0.5%
0.1%
1.0%
5%

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Compressors, Gas Turbines and Jet Engines
A rocket engine for the combustion of its fuel

Carries its own oxygen
Uses compressed atmospheric air
Uses surrounding air
Does not require oxygen

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Compressors, Gas Turbines and Jet Engines
In a reciprocating air compressor, the compression work per kg of air

Is independent of clearance volume
Increases as clearance volume increases
Decreases as clearance volume increases
Increases as clearance volume decreases

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Compressors, Gas Turbines and Jet Engines
The output of a gas turbine is 300 KW and its efficiency is 20 percent, the heat supplied is

15 KW
150 KW
600 KW
6000 KW

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MORE MCQ ON Compressors, Gas Turbines and Jet Engines

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