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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