Mechanical Engineering Questions And Answers :: Compressors: part3



Mechanical Engineering : Compressors QUESTIONS AND ANSWERS :: part3 : 11 to 15

Following Mechanical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :

11.The volumetric efficiency of a compressor is calculated on the basis of

volume of air inhaled at working conditions
volume of air inhaled at N.T.P. conditions
volume at 0�C and 1 kg/cm2
volume at 20�C and 1 kg/cm2
none of the above.

12.Diffuser in a compressor is used to

increase velocity
make the flow stream-line
convert pressure energy into kinetic energy
convert kinetic energy into pressure energy
increase degree of reaction.

13.The indicated work per unit mass of air delivered is

directly proportional to clearance volume
greatly affected by clearance volume
not affected by clearance volume
inversely proportional to clearance volume
opt 5

14.The volumetric efficiency of a compressor falls roughly as follows for every 100 m increase in elevation

0.1%
0.5%
1.0%
5%
10%.

15.In a compressor, free air delivered is the actual volume delivered at the stated pressure reduced to

N.T.P. conditions
intake temperature and pressure conditions
0�C and 1 kg/cm2
20�C and 1 kg/cm2
none of the above.

More Compressors QUESTIONS AND ANSWERS available in next pages

    Health is the greatest gift, contentment is the greatest wealth -Buddha
Trust because you are willing to accept the risk, not because it’s safe or certain