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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
The capacity of compressor will be highest when its intake temperature is

Anything
Highest
Lowest
Atmospheric

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

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

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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.

Six times
Three times
Equal to
Double

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Compressors, Gas Turbines and Jet Engines
Volumetric efficiency is

Index of compressor performance
The ratio of the air actually delivered to the amount of piston displacement
The ratio of stroke volume to clearance volume
Reciprocal of compression ratio

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Compressors, Gas Turbines and Jet Engines
During base load operation, the best method of controlling compressor is

Variable speed
Start-stop motor
Constant speed unloader
Relief valve

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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

Radial
Forward curved
None of the listed here
Backward curved

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