Volumetric efficiency of a compressor without clearance volume

A Increases with increase in compression ratio
B Decreases with increase in compression ratio
C Is not dependent upon compression ratio
D May increase/decrease depending on compressor capacity

Correct Answer: Is not dependent upon compression ratio

A compressor's volumetric efficiency (V) is defined by the ratio of the actual volume of gas that it could suck if there was no such thing as clearance volume.
Therefore, a compressor with less clearance volume should be more volumetrically efficient.
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#Mechanical Engineering #Compressors #Gas Turbines And Jet Engines

Related Questions

Volumetric efficiency of a compressor with clearance volume
A Increases with increase in compression ratio
B Decreases with increase in compression ratio
C In not dependent upon compression ratio
D May increase/decrease depending on compressor capacity
If the clearance ratio for a reciprocating air compressor is 'K', then its volumetric efficiency is given by
A $$1 - {\text{K}} + {\text{K}}{\left( {\frac{{{{\text{p}}_1}}}{{{{\text{p}}_2}}}} \right)^{\frac{1}{{\text{n}}}}}$$
B $$1 + {\text{K}} - {\text{K}}{\left( {\frac{{{{\text{p}}_2}}}{{{{\text{p}}_1}}}} \right)^{\frac{1}{{\text{n}}}}}$$
C $$1 - {\text{K}} + {\text{K}}{\left( {\frac{{{{\text{p}}_1}}}{{{{\text{p}}_2}}}} \right)^{\frac{{{\text{n}} - 1}}{{\text{n}}}}}$$
D $$1 + {\text{K}} - {\text{K}}{\left( {\frac{{{{\text{p}}_2}}}{{{{\text{p}}_1}}}} \right)^{\frac{{{\text{n}} - 1}}{{\text{n}}}}}$$
The variable required to be known in correlations used for estimating the horse power of a centrifugal gas compressor and hence its cost are P. Inlet pressure Q. Compressor rpm R. Delivery pressure S. Volumetric flow rate at inlet.
A P, Q and R
B P and R
C R and S
D P, R and S
In a single stage, single acting reciprocating air compressor without clearance volume, the work-done is maximum during
A Isothermal compression
B Isentropic compression
C Polytropic compression
D None of these
In a single stage, single acting reciprocating air compressor, without clearance volume, the work-done is minimum during
A Isothermal compression
B Isentropic compression
C Polytropic compression
D None of these
Volumetric efficiency of a compressor decreases with ________ in compression ratio.
A Decrease
B Increase
C Remain same
D Does not change
The volumetric efficiency of compressor with increase in compression ratio will
A Increase
B Decrease
C Remain same
D May increase or decrease depending on clearance volume
The volumetric efficiency of a compressor
A Increases with decrease in compression ratio
B Decreases with decrease in compression ratio
C Increases with increase in compression ratio
D Decreases with increase in compression ratio
With increase in compression ratio, the volumetric efficiency of air compressor
A Increases
B Decreases
C Remains same
D May increase or decrease (depends on the suction pressure)
Horsepower increase of a centrifugal gas compressor without altering the volumetric flow rate will __________ the gas discharge pressure.
A Increase
B Decrease
C Not change
D Exponentially decrease

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