The C.O.P. of a refrigerator working on a reversed Carnot cycle is (where T₁ = Lowest absolute temperature, and T₂ = Highest absolute temperature)

A. T₁ / (T₂ - T₁)

B. (T₂ - T₁)/T₁

C. (T₁ - T₂)/T₁

D. T₂/ (T₂ - T₁)

Please do not use chat terms. Example: avoid using "grt" instead of "great".

You can do it
  1. If a gas is to be liquefied, its temperature must be
  2. The difference between dry bulb temperature and dew point temperature, is called
  3. The temperature of air recorded by a thermometer, when its bulb is surrounded by a wet cloth exposed…
  4. The coefficient of performance (C.O.P.) of a refrigerator working as a heat pump is given by
  5. If a heat pump cycle operates between the condenser temperature of +27°C and evaporator temperature…
  6. The condensing pressure due to the presence of non-condensable gases, as compared to that actually required…
  7. Which of the following statement is correct?
  8. The reduced ambient air cooling system has
  9. One ton of the refrigeration is
  10. Relative humidity is given by (where pv = Partial pressure of water vapour, pb = Barometric pressure,…
  11. Most air cooled condensers are designed to operate with a temperature difference of
  12. A vapour absorption refrigeration system
  13. In a refrigeration system, the expansion device is connected between the
  14. Which of the following statement is wrong?
  15. The moisture in a refrigerant is removed by
  16. Allowable pressure on high pressure side or ammonia absorption system is of the order of
  17. The wet bulb temperature during sensible heating of air
  18. The condition of refrigerant after passing through the condenser in a vapour compression system is
  19. Ammonia absorption refrigeration cycle requires
  20. In aircraft, air refrigeration Cycle is used because of
  21. The humidification process, on the psychrometric chart is shown by
  22. A heat pump working on a reversed Carnot cycle has a C.O.P. of 5. It works as a refrigerator taking…
  23. A mixture of dry air and water vapour, when the air has diffused the maximum amount of water vapour…
  24. The process, generally used in winter air-conditioning to warm and humidity the air, is called
  25. The thermostatic expansion valve is used in __________ type of evaporators.
  26. Domestic refrigerator working on vapour compression cycle uses the following type of expansion device
  27. The boiling point of ammonia is
  28. The ratio of heat extracted in the refrigerator to the work-done on the refrigerant is called
  29. Air refrigerator works on
  30. The specific humidity during humidification process