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The unit of thermal diffusivity is

A. m/hK

B. m/h

C. m²/h

D. m²/hK

Correct Answer : C.


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  3. The alignment circle is marked on the psychrometric chart at
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  5. In a refrigeration system, heat absorbed in comparison to heat rejected is
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  8. In aircraft, air refrigeration Cycle is used because of
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  10. The reduced ambient air cooling system has
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  12. Rating of a domestic refrigerator is of the order of
  13. The wet bulb depression is zero when relative humidity is
  14. In aqua ammonia absorption refrigeration system, incomplete rectification leads to accumulation of water…
  15. Which of the following refrigerant has the highest freezing point.
  16. The vapour compression refrigerator employs the following cycle
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  18. Pick up the correct statement about giving up of heat from one medium to other in ammonia absorption…
  19. The temperature of ammonia after compression in a vapour compression system is
  20. Which of the following refrigerant is highly toxic and flammable?
  21. The specific humidity during dehumidification process
  22. The condition of refrigerant after passing through the condenser in a vapour compression system is
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  24. The bank of tubes at the back of domestic refrigerator is
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