Discussion
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- Question
Sensible heat factor is given by (where S.H. = Sensible heat, and L.H. = Latent heat)
Options- A.
- B.
- C.
- D.
- Correct Answer
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- 1. The wet bulb temperature at 100% relative humidity is __________ dry bulb temperature.
Options- A. same as
- B. lower than
- C. higher than Discuss
- 2. In case of sensible heating of air, the coil efficiency is given by (where B.P.F. = By-pass factor)
Options- A. B.P.F. - 1
- B. 1 - B.P.F.
- C.
- D. 1 + B.RF. Discuss
- 3. The coefficient of performance of vapour compression refrigeration system is quite __________ as compared to air refrigeration system.
Options- A. low
- B. high Discuss
- 4. Wein's law states that the wave length corresponding to __________ is proportional to the absolute temperature.
Options- A. minimum energy
- B. maximum energy Discuss
- 5. During sensible cooling of air, the relative humidity increases.
Options- A. Yes
- B. No Discuss
- 6. The horizontal and non-uniformly spaced lines on a psychrometric chart indicates
Options- A. dry bulb temperature
- B. wet bulb temperature
- C. dew point temperature
- D. specific humidity Discuss
- 7. In order to cool and dehumidify a stream of moist air, it must be passed over the coil at a temperature
Options- A. which lies between the dry bulb and wet bulb temperatures of the incoming stream
- B. which lies between the wet bulb and dew point temperatures of the incoming stream
- C. which is lower than the dew point temperature of the incoming stream
- D. of adiabatic saturation of incoming stream Discuss
- 8. Which of the following refrigerant is highly toxic and flammable?
Options- A. Ammonia
- B. Carbon dioxide
- C. Sulphur dioxide
- D. R-12 Discuss
- 9. The most commonly used method for the design of duct size is the
Options- A. velocity reduction method
- B. equal friction method
- C. static regain method
- D. dual or double method Discuss
- 10. The undesireable property of a refrigerant is
Options- A. non-toxic
- B. non-flammable
- C. non-explosive
- D. high boiling point Discuss
Heat Transfer, Refrigeration and Air Conditioning problems
Search Results
Correct Answer: same as
Correct Answer: 1 - B.P.F.
Correct Answer: high
Correct Answer: maximum energy
Correct Answer: Yes
Correct Answer: dew point temperature
Correct Answer: which is lower than the dew point temperature of the incoming stream
Correct Answer: Ammonia
Correct Answer: static regain method
Correct Answer: high boiling point
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