Exercise: Compressors Gas Dynamics And Gas Turbines

Questions for: Compressors Gas Dynamics And Gas Turbines

The compressor efficiency is defined as the ratio of volume of free air delivery per stroke to the swept volume of the piston.
A:
Correct
B:
Incorrect
C:
D:
Answer: B
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The temperature of air at the beginning of the compression stroke is __________ the atmospheric temperature.
A:
equal to
B:
less than
C:
more than
D:
Answer: C
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In jet propulsion power unit, the inlet duct of diverging shape is used for converting kinetic energy of air into pressure energy.
A:
True
B:
False
C:
D:
Answer: A
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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.
A:
reduced
B:
increased
C:
D:
Answer: A
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The ratio of the net work obtained from the gas turbine plant to the turbine work is known as
A:
compression ratio
B:
work ratio
C:
pressure ratio
D:
none of these
Answer: B
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