Mechanical Engineering - Heat Transfer, Refrigeration and Air Conditioning

16.
Air refrigerator works on
reversed Carnot cycle
Bell Coleman cycle
both (a) and ib)
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.

17.
The reciprocating refrigerant compressors are very suitable for
small displacements and low condensing pressures
large displacements and high condensing pressures
small displacements and high condensing pressures
large displacements and low condensing pressures
Answer: Option
Explanation:
No answer description is available. Let's discuss.

18.
The boiling point of carbon dioxide is
-20.5°C
-50°C
-63.3°C
-78.3°C
Answer: Option
Explanation:
No answer description is available. Let's discuss.

19.
The mass of water vapour present in __________ is called absolute humidity.
1 m3 of wetair
1 m3 of dry air
1 kg of wet air
1 kg of dry air
Answer: Option
Explanation:
No answer description is available. Let's discuss.

20.
The relative coefficient of performance is equal to
Actual C.O.P. x Theoretical C.O.P.
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.