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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
For speed above 3000 km/hour, it is more advantageous to use

Ramjet engine
Turbojet engine
Rockets
Propellers

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Compressors, Gas Turbines and Jet Engines
The type of rotary compressor used in aeroplanes, is of

Radial flow type
Centrifugal type
Axial flow type
None of these

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Compressors, Gas Turbines and Jet Engines
The air-fuel ratio in gas turbines is of the order of

15: 1
50: 1.
7: 1
30: 1

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Compressors, Gas Turbines and Jet Engines
The axial flow compressor is preferred in aircraft gas turbines because of

None of the listed here
High pressure rise
Low frontal area
Higher thrust

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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 a side where cooling tower is located nearby
From outside atmosphere at 1°C
From coal yard side

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Compressors, Gas Turbines and Jet Engines
The ratio of the volume of free air delivery per stroke to the swept volume of the piston, is known as

Compressor efficiency
Isothermal efficiency
Volumetric efficiency
Mechanical efficiency

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