Mechanical Engineering - Heat Transfer, Refrigeration and Air Conditioning
Exercise :: Heat Transfer, Refrigeration and Air Conditioning - Section 5
| 16. |
Air refrigerator works on |
| A. |
reversed Carnot cycle | | B. |
Bell Coleman cycle | | C. |
both (a) and ib) | | D. |
none of these |
Answer: Option C
Explanation:
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| 17. |
The reciprocating refrigerant compressors are very suitable for |
| A. |
small displacements and low condensing pressures | | B. |
large displacements and high condensing pressures | | C. |
small displacements and high condensing pressures | | D. |
large displacements and low condensing pressures |
Answer: Option C
Explanation:
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| 18. |
The boiling point of carbon dioxide is |
Answer: Option D
Explanation:
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| 19. |
The mass of water vapour present in __________ is called absolute humidity. |
| A. |
1 m3 of wetair | | B. |
1 m3 of dry air | | C. |
1 kg of wet air | | D. |
1 kg of dry air |
Answer: Option B
Explanation:
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| 20. |
The relative coefficient of performance is equal to |
| A. |
 | | B. |
 | | C. |
Actual C.O.P. x Theoretical C.O.P. | | D. |
none of these |
Answer: Option B
Explanation:
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