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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
A large clearance volume in a reciprocating compressor results in

Increased volume flow rate
Lower suction pressure
Lower delivery pressure
Reduced volume flow rate

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Compressors, Gas Turbines and Jet Engines
The volume of air delivered by the compressor is called

None of the listed here
Swept volume
Compressor capacity
Free air delivery

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Compressors, Gas Turbines and Jet Engines
Propulsive efficiency is defined as ratio of

Thrust power and fuel energy
Engine output and propulsive power
Propulsive power and fuel input
Thrust power and propulsive power

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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

0.1%
0.5%
1.0%
5%

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Compressors, Gas Turbines and Jet Engines
An air compressor may be controlled by

Blow off control
Throttle control
Any one of the above
Clearance control

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Compressors, Gas Turbines and Jet Engines
When the outlet angle from the rotor of a centrifugal compressor is more than 90°, then the blades are said to be

Forward curved
None of the listed here
Radial
Backward curved

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