Mechanical Engineering - Heat Transfer, Refrigeration and Air Conditioning
Exercise :: Heat Transfer, Refrigeration and Air Conditioning - Section 8
| 6. |
The temperature of air recorded by a thermometer, when it is not effected by the moisture present in the air, is called |
| A. |
wet bulb temperature | | B. |
dry bulb temperature | | C. |
dew point temperature | | D. |
none of these |
Answer: Option B
Explanation:
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| 7. |
A human body feels comfortable when the heat produced by the metabolism of human body is equal to the |
| A. |
heat dissipated to the surroundings | | B. |
heat stored in the human body | | C. |
sum of (a) and (b) | | D. |
difference of (a) and (b) |
Answer: Option C
Explanation:
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| 8. |
During sensible cooling, |
| A. |
relative humidity remains constant | | B. |
wet bulb temperature increases | | C. |
specific humidity increases | | D. |
partial pressure of vapour remains constant |
Answer: Option D
Explanation:
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| 9. |
The wave length of the radiation emitted depends only on the temperature and is independent of the material of the body. |
Answer: Option A
Explanation:
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| 10. |
The process of heat transfer from one particle of the body to another by the actual motion of the heated particles, is called |
| A. |
conduction | | B. |
convection | | C. |
radiation |
Answer: Option B
Explanation:
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