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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
The maximum delivery pressure in a rotary air compressor is

20 bar
30 bar
10 bar
50 bar

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Compressors, Gas Turbines and Jet Engines
A 3 m³/min compressor means that it

Delivers 3 m³/ min of compressed air at delivery pressure
Compresses 3 m³/ min of free air
Delivers 3 m³/ min of compressed air
Compresses 3 m³/min of standard air

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Compressors, Gas Turbines and Jet Engines
The compressor efficiency is the

Isothermal H.P/indicated H.R
Compression work/motor input
Total output/air input
Isothermal H.P./shaft H.R

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Compressors, Gas Turbines and Jet Engines
In multistage compressor, the isothermal compression is achieved by

Employing inter-cooler
By constantly cooling the cylinder
By running compressor at very slow speed
By insulating the cylinder

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

Its own oxygen
Compressed atmospheric air
Surrounding air
None of these

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Compressors, Gas Turbines and Jet Engines
A closed gas turbine in which fuel is burnt directly in the air is not possible because of

High friction losses
Paucity of O2
High specific volume
Increasing gas temperature

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MORE MCQ ON Compressors, Gas Turbines and Jet Engines

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