Mechanical Engineering - Heat Transfer, Refrigeration and Air Conditioning
Exercise :: Heat Transfer, Refrigeration and Air Conditioning - Section 1
| 31. |
While designing the refrigeration system of an aircraft, the prime consideration is that the |
| A. |
system has high C.O.P. | | B. |
power per TR is low | | C. |
mass of refrigerant circulated in the system is low | | D. |
mass of the refrigeration equipment is low |
Answer: Option D
Explanation:
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| 32. |
The heat transfer takes place according to |
| A. |
Zeroth law of thermodynamics | | B. |
First law of thermodynamics | | C. |
Second law of thermodynamics | | D. |
Kirchhoff's law |
Answer: Option C
Explanation:
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| 33. |
An electrolux refrigerator is called a __________ absorption system. |
| A. |
single fluid | | B. |
two fluids | | C. |
three fluids |
Answer: Option C
Explanation:
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| 34. |
The heat transfer by radiation __________ a medium. |
| A. |
requires | | B. |
does not require |
Answer: Option B
Explanation:
|
| 35. |
Thermal conductivity of water __________ with rise in temperature. |
| A. |
remains same | | B. |
decreases | | C. |
increases | | D. |
may increase or decrease depending upon temperature |
Answer: Option D
Explanation:
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