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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

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

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

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

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Compressors, Gas Turbines and Jet Engines
After-cooler is used to

Cool the air
Cause moisture and oil vapour to drop out
Reduce volume
Decrease the delivery temperature for ease in handling

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Compressors, Gas Turbines and Jet Engines
The efficiency of roots blower ________ with the increase in pressure ratio.

None of these
Does not change
Decreases
Increases

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Compressors, Gas Turbines and Jet Engines
Gas turbine blades are given a rake

Opposite to the direction of motion of blades
Depending on the velocity
In the direction of motion of blades
Equal to zero

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

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

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MORE MCQ ON Compressors, Gas Turbines and Jet Engines

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