27) Ratio of indicated h.p. to shaft h.p. in known as

compressor efficiency

isothermal efficiency

volumetric efficiency

mechanical efficiency

Answer is:

mechanical efficiency

the ratio of stroke volume to clearance volume

the ratio of the air actually delivered to the amount of piston displacement

reciprocal of compression ratio

index of compressor performance

Answer is:

20-30%

40-50%

60-70%

70-90%

Answer is:

increases with increase in compression ratio

decreases with increase in compression ratio

in not dependent upon compression ratio

may increase/decrease depending on compressor capacity

Answer is:

increases with increase in compression ratio

decreases with increase in compression ratio

is not dependent upon compressin ratio

may increase/decrease depending on compressor capacity

Answer is: