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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
During peak load periods, the best method of controlling compressors is

Constant speed unloader
Relief valve
Variable speed
Start-stop motor

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Compressors, Gas Turbines and Jet Engines
For a two stage compressor, if index of compression for higher stage is greater than index of compression for lower stage, then the optimum pressure as compared to ideal case will

Decrease
Other factors control it
Increase
Remain unaffected

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Compressors, Gas Turbines and Jet Engines
In a double acting compressor, the air is compressed

In a single cylinder on both sides of the piston
In two cylinders on both sides of the piston
In one cylinder
In two cylinders

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Compressors, Gas Turbines and Jet Engines
In a centrifugal compressor, the flow of air is ________ to the axis of compressor.

Perpendicular
Parallel
None of these
Inclined

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Compressors, Gas Turbines and Jet Engines
The ratio of the increase in pressure in rotor blades to total increase in pressure in the stage is called

Pressure coefficient
Slip factor
Pressure ratio
Degree of reaction

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Compressors, Gas Turbines and Jet Engines
The work ratio of a gas turbine plant is defined as the ratio of

Net work output and isentropic heat drop
Actual heat drop and isentropic heat drop
Net work output and work done by turbine
Net work output and heat supplied

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