If a heat pump cycle operates between the condenser temperature of +27°C and evaporator temperature of -23°C, then the Carnot COP will be

A. 0.2

B. 1.2

C. 5

D. 6

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  1. The bypass factor, in case of sensible cooling of air, is given by (where td₁ = Dry bulb temperature…
  2. Which of the following statement is correct?
  3. The wet bulb depression is zero when relative humidity is
  4. The C.O.P. of a Carnot refrigerator in winter will be _________ as compared to C.O.P. in summer.
  5. Moisture in Freon refrigeration system causes
  6. An important characteristic of absorption system of refrigeration is
  7. Ammonia is
  8. The total pressure exerted by the mixture of air and water vapour is equal to the sum of pressures which…
  9. R-12 is generally preferred over R-22 in deep freezers since
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  11. In Electrolux refrigerator
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  13. The bypass factor of a cooling coil decreases with
  14. The reduced ambient air cooling system has
  15. Mass flow ratio of NH₃ in comparison to Freon12 for same refrigeration load and same temperature…
  16. The desirable property of a refrigerant is
  17. Pick up the wrong statement. A refrigerant should have
  18. The bank of tubes at the back of domestic refrigerator is
  19. A refrigeration system
  20. For obtaining high COP, the pressure range of compressor should be
  21. Short horizontal lines on pressure-enthalpy chart show
  22. Allowable pressure on high pressure side or ammonia absorption system is of the order of
  23. The horizontal and non-uniformly spaced lines on a psychrometric chart indicates
  24. The coefficient of performance of Heat Pump is always __________ one.
  25. The pressure at the outlet of a refrigerant compressor is called
  26. During humidification process, dry bulb temperature
  27. The difference between dry bulb temperature and wet bulb temperature, is called
  28. One ton of refrigeration is equal to the refrigeration effect corresponding to melting of 1000 kg of…
  29. During sensible heating of air _________ decreases.
  30. The air cooling system mostly used in transport type aircrafts is