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Mechanical Engineering - Compressors, Gas Dynamics and Gas Turbines

Exercise : Compressors, Gas Dynamics and Gas Turbines - Section 1
16.
Intercooling in multi-stage compressors is done
to cool the air during compression
to cool the air at delivery
to enable compression in two stages
to minimise the work of compression
Answer: Option
Explanation:
No answer description is available. Let's discuss.
17.
For a two stage reciprocating compressor, compression from p1 to p3 is with perfect intercooling and no pressure losses. If compression in both the cylinders follows the same polytropic process and the atmospheric pressure is pa, then the intermediate pressure p2 is given by
p2 = (p1 + p3)/2
p2 = p1.p3
P2 = Pa x p3/p1
p2 = pa p3/p1
Answer: Option
Explanation:
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18.
The ratio of workdone per cycle to the stroke volume of the compressor is known as
compressor capacity
compression ratio
compressor efficiency
mean effective pressure
Answer: Option
Explanation:
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19.
The clearance volume in the compressor is kept minimum because it effects on volumetric efficiency.
Correct
Incorrect
Answer: Option
Explanation:
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20.
The inlet pressure is always __________ the discharge pressure.
equal to
less than
more than
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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