Compressors - Interview Questions | Exam2Win

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31. The pressure and temperature conditions of air at the suction of compressor are

A. atmospheric

B. slightly more than atmospheric

C. slightly less than atmospheric

D. pressure slightly more than atmospheric and temperature slightly less than atmospheric

E. pressure sightly less than atmospheric and temperature slightly more than atmospheric.

Explanation:

32. What will be the volume of air at 327�C if its volume at 27�C is 1.5 m3/mt

A. 3 m3/mt .

B. 1.5 m3/mt

C. 18 m3/mt'

D. 6 m3/mt

E. 0.75 m3/mt.

Explanation:

33. Isothermal compression though most efficient, but is not -practicable because

A. it requires very big cylinder

B. it does not increase pressure much

C. it is impossible in practice

D. compressor has to run at very slow speed to achieve it

E. it requires cylinder to be placed in water.

Explanation:

34. Maximum work is done in compressing air when the compression is

A. isothermal

B. adiabatic

C. polytropic

D. any one of the above

E. none of the above.

Explanation:

35. The capacity of a compressor is 5 m /mih. 5 m /min refers to

A. standard air

B. free air

C. compressed air

D. compressed air at delivery pressure

E. air sucked.

Explanation: