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For proper refrigeration in a cabinet, if the temperature and vapour pressure difference between cabinet and atmosphere is high, then

A. Bigger cabinet should be used

B. Smaller cabinet should be used

C. Perfectly tight vapour seal should be used

D. Refrigerant with lower evaporation temperature should be used

Correct Answer : C.


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  2. A vapour absorption refrigerator uses __________ as a refrigerant.
  3. The evolution of heat of solution takes place in ammonia absorption plant when
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  10. During heating and humidification, the final relative humidity of air
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  12. In a lithium bromide absorption refrigeration system
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  14. Relative humidity is given by (where pv = Partial pressure of water vapour, pb = Barometric pressure,…
  15. In Electrolux refrigerator
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  20. The bypass factor (B. P. F.) in case of sensible heating of air is (Where td₁ = Dry bulb temperature…
  21. It is desired to condition the outside air from 70% relative humidity and 45° C dry bulb temperature…
  22. Which of the following refrigerant has the lowest freezing point?
  23. The formation of frost on cooling coils in a refrigerator
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  25. The process, generally used in winter air-conditioning to warm and humidity the air, is called
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