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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
The working fluid in a turbine is

In the form of air and water mixture
In three phases
In a single phase
In two phases

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Compressors, Gas Turbines and Jet Engines
The volume of air delivered in a medium capacity air compressor per unit time is

0.1 to 1.2 m³/s
0.15 to 5 m³/s
None of these
Above 5 m³/s

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Compressors, Gas Turbines and Jet Engines
The ratio of the indicated power to the shaft power or brake power of the motor or engine required to drive the compressor, is called

Volumetric efficiency
Compressor efficiency
Mechanical efficiency
Isothermal efficiency

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Compressors, Gas Turbines and Jet Engines
The ratio of work-done per cycle to the stroke volume of the compressor is known as

Compressor efficiency
Compression ratio
Compressor capacity
Mean effective pressure

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Compressors, Gas Turbines and Jet Engines
The process, which causes the air to enter the impeller blades of a centrifugal compressor at ________ velocity (without effecting the mass of air to flow and velocity of flow) is known as prewhirl.

None of these
Zero
Reduced
Increased

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Compressors, Gas Turbines and Jet Engines
In jet engines, paraffin is usually used as the fuel because of its

Ease of atomisation
High calorific value
Both (A) and (C) above
Low freezing point

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