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Mechanical Engineering - Compressors, Gas Dynamics and Gas Turbines

Exercise : Compressors, Gas Dynamics and Gas Turbines - Section 3
21.
For minimum work required to compress and deliver a quantity of air by multi-stage compression,
the compression ratio in each stage should be same
the intercooling should be perfect
the workdone in each stage should be same
all of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
22.
Separators are generally used in air compressor installations
before the intercooler
after the intercooler
between the aftercooler and receiver
before first stage suction
Answer: Option
Explanation:
No answer description is available. Let's discuss.
23.
If the flow of air through the compressor is perpendicular to its axis, then it is a
reciprocating compressor
centrifugal compressor
axial flow compressor
turbo compressor
Answer: Option
Explanation:
No answer description is available. Let's discuss.
24.
In air compressors, free air delivery means the
actual volume of the air delivered by the compressor when reduced to normal temperature and pressure conditions
volume of air delivered by the compressor
volume of air sucked by the compressor during its suction stroke
none of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
25.
The propulsive power of the rocket is (where v1 = Jet velocity, and v2 = Air-craft velocity)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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