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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
Isothermal compression efficiency can be attained by running the compressor

At average speed
At very slow speed
At zero speed
At very high speed

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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

Isothermal efficiency
Volumetric efficiency
Mechanical efficiency
Compressor efficiency

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Compressors, Gas Turbines and Jet Engines
A gas turbine used in air craft should have

Small frontal area and high h.p.
High h.p. and low weight
High speed and high h.p.
Low weight and small frontal area

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Compressors, Gas Turbines and Jet Engines
The performance of air compressor at high altitudes will be ________ as compared to that at sea level.

None of these
Lower
Higher
Same

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

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

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Compressors, Gas Turbines and Jet Engines
The capacity of a compressor is expressed in

kg/m²
m³/min
m³/kg
kg/m³

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