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One ton refrigeration corresponds to

A. 50 kcal/ min

B. 50 kcal/ hr

C. 80 kcal/ min

D. 80 kcal/ hr

Correct Answer : A.


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  2. Moisture should be removed from refrigerants to avoid
  3. One of the purposes of sub cooling the liquid refrigerant is to
  4. The freezing point of R-12 is
  5. A vapour absorption refrigerator uses __________ as a refrigerant.
  6. Rating of a domestic refrigerator is of the order of
  7. The dehumidification process, on the psychrometric chart, is shown by
  8. The superheated vapour region, in a pressure enthalpy chart, is represented by the space
  9. The heat rejection factor (HRF) is given by
  10. During humidification process, __________ increases.
  11. Carbon dioxide is
  12. The coefficient of performance of Electrolux refrigerator is the ratio of
  13. Refrigeration in aeroplanes usually employs the following refrigerant
  14. The specific humidity during humidification process
  15. The refrigeration effect in a dry evaporator compared to flooded evaporator in a similar plant is
  16. The value of C.O.P in vapour compression cycle is usually
  17. Environmental protection agencies advice against the use of chlorofluorocarbon refrigerants since
  18. The relative humidity lines on a psychrometric chart are
  19. Most air cooled condensers are designed to operate with a temperature difference of
  20. The COP of a domestic refrigerator
  21. Under cooling in a refrigeration cycle
  22. In chemical dehumidification process,
  23. An infinite parallel planes with emissivities e₁ and e₂, the interchange factor for radiation…
  24. In actual air-conditioning applications for R-12 and R-22, and operating at a condenser temperature…
  25. Formation of frost on evaporator in refrigerator
  26. At lower temperatures and pressures, the latent heat of vaporisation of a refrigerant
  27. Presence of moisture in a refrigerant affects the working of
  28. The cooling system used for supersonic aircrafts and rockets is
  29. The leaks in a refrigeration system using Freon are detected by
  30. If the evaporator temperature of a plant is lowered, keeping the condenser temperature constant, the…