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

Correct Answer: Work done in all stages should be equal

For minimum work in multistage compression, assuming same index of compression in all stagesWork done in all stages should be equal
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Related Questions

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
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
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
The total gain of a multistage amplifier is less than the product of the gains of individual stages due to ___________
A Power loss in the coupling device
B Loading effect of the next stage
C The use of many transistors
D The use of many capacitors
In the initial stages of a multistage amplifier, we use ___________
A RC coupling
B Transformer coupling
C Direct coupling
D None of the above
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
In multistage compressor, the isothermal compression is achieved by
A Employing inter-cooler
B By constantly cooling the cylinder
C By running compressor at very slow speed
D By insulating the cylinder
Which is false statement about multistage compression?
A Power consumption per unit of air delivered is low
B Volumetric efficiency is high
C It is best suited for compression ratios around 7 : 1
D The moisture in air is condensed in the inter-cooler
Multistage compression is necessary for high efficiency,
A If the ratio of the delivery pressure to the intake pressure exceeds 5:1
B When large amount of gas is to be compressed
C When the delivered gas is desired at very high velocity
D None of these
When a multistage tray tower uses a minimum reflux ratio, it implies
A Infinite trays and maximum reboiler heat load
B Infinite trays and minimum reboiler heat load
C Minimum trays and minimum reboiler heat load
D Minimum trays and maximum reboiler heat load

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