Related Questions

Which is false statement about advantages of multistage compressor in comparison to single stage compressor?
A Less power requirement
B Better mechanical balance
C Less loss of air due to leakage past the cylinder
D Lower volumetric efficiency
The advantage of multistage compression over single stage compression is
A Lower power consumption per unit of air delivered
B Higher volumetric efficiency
C Decreased discharge temperature
D All of the above
For minimum work in multistage compression, assuming same index of compression in all stages
A Work done in first stage should be more
B Work done in subsequent stages should increase
C Work done in subsequent stages should decrease
D Work done in all stages should be equal
Multistage compression of air as compared to single stage compression offers the advantage of
A Power saving per unit weight of air delivered
B Moisture elimination in the inter-stage cooler
C Increased volumetric efficiency
D All of the above
Isothermal compression efficiency can be attained by running the compressor
A At very high speed
B At very slow speed
C At average speed
D At zero speed
The work done in isothermal compression compared to that in adiabatic compression will be
A Less
B More
C Same
D More or less depending upon the extent of work done
Reheating in a multistage expansion gas turbine ________ compressor work.
A Has no effect on
B Decreases
C Increases
D None of these
Interstage coolers are provided in a multistage compressor to
A Save power in compressing a given volume to a given pressure
B Cool the delivered air
C Achieve the exact delivery pressure
D None of these
For a two stage compressor, if index of compression for higher stage is greater than index of compression for lower stage, then the optimum pressure as compared to ideal case will
A Increase
B Decrease
C Remain unaffected
D Other factors control it
For minimum work required to compress and deliver a quantity of air by multistage compression
A The compression ratio in each stage should be same
B The intercooling should be perfect
C The work-done in each stage should be same
D All of the above

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