Discussion
Home ‣ Mechanical Engineering ‣ Heat Transfer, Refrigeration and Air Conditioning Comments
- Question
Sulphur dioxide has the lowest boiling point.
Options- A. Yes
- B. No
- Correct Answer
- No
- 1. A simple air cooling system is good for __________ flight speeds.
Options- A. low
- B. high Discuss
- 2. In a psychrometric chart, dew point temperature lines are horizontal and non-uniformly spaced.
Options- A. Correct
- B. Incorrect Discuss
- 3. During dehumidification process, __________ remains constant.
Options- A. wet bulb temperature
- B. relative humidity
- C. dry bulb temperature
- D. specific humidity Discuss
- 4. The highest temperature during the cycle in a vapour compression system occurs after evaporation.
Options- A. True
- B. False Discuss
- 5. In chemical dehumidification process,
Options- A. dew point temperature decreases
- B. wet bulb temperature decreases
- C. dry bulb temperature increases
- D. all of these Discuss
- 6. The lowest thermal diffusivity is of
Options- A. iron
- B. lead
- C. aluminium
- D. rubber Discuss
- 7. The ratio of actual heat transfer to the maximum possible heat transfer is known as heat exchanger effectiveness.
Options- A. Agree
- B. Disagree Discuss
- 8. The unit of overall coefficient of heat transfer is
Options- A. W/m2K
- B. W/m2
- C. W/mK
- D. W/m Discuss
- 9. The mass of water vapour present in 1 kg of dry air, is called humidity ratio.
Options- A. True
- B. False Discuss
- 10. The refrigerant widely used in domestic refrigerators is
Options- A. ammonia
- B. carbon dioxide
- C. sulphur dioxide
- D. R-12 Discuss
Heat Transfer, Refrigeration and Air Conditioning problems
Search Results
Correct Answer: low
Correct Answer: Correct
Correct Answer: dry bulb temperature
Correct Answer: False
Correct Answer: all of these
Correct Answer: rubber
Correct Answer: Agree
Correct Answer: W/m2K
Correct Answer: True
Correct Answer: R-12
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