Exercise: Compressors Gas Dynamics And Gas Turbines

Questions for: Compressors Gas Dynamics And Gas Turbines

When air is to be compressed at a high pressure, then it is advantageous to use
A:
single stage compression
B:
multi-stage compression without intercooling
C:
multi-stage compression with intercooling
D:
none of these
Answer: C
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The speed of rotary air compressor is __________ as compared to reciprocating air compressor.
A:
high
B:
low
C:
D:
Answer: A
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The overall thermal efficiency of an ideal gas turbine plant is (where r = Pressure ratio)
A:
rγ - 1
B:
1 - rγ - 1
C:
D:
Answer: C
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Volumetric efficiency of a compressor decreases with __________ in compression ratio.
A:
decrease
B:
increase
C:
D:
Answer: B
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If the clearance ratio for a reciprocating air compressor is 'K', then its volumetric efficiency is given by
A:
B:
C:
D:
Answer: B
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