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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
Air-fuel ratio in a jet engine will be of the order of

0.83402777777778
0.62569444444444
0.41736111111111
2.5006944444444

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Compressors, Gas Turbines and Jet Engines
In a single stage, single acting reciprocating air compressor, without clearance volume, the work-done is minimum during

Isentropic compression
Isothermal compression
Polytropic compression
None of these

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Compressors, Gas Turbines and Jet Engines
The minimum work required for a three stage reciprocating air compressor is ___ the work required for each stage.

Double
Six times
Equal to
Three times

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

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

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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 standard air
Delivers 3 m³/ min of compressed air
Compresses 3 m³/ min of free air

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Compressors, Gas Turbines and Jet Engines
Fighter bombers use following type of engine

Turbojet
Turbo-propeller
Rocket
Ramjet

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