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Air refrigerator works on

A. Reversed Carnot cycle

B. Bell Coleman cycle

C. Both (A) and (B)

D. None of these

Correct Answer : C.


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  1. One ton refrigeration corresponds to
  2. During sensible heating of air _________ decreases.
  3. For proper refrigeration in a cabinet, if the temperature and vapour pressure difference between cabinet…
  4. The refrigerant supplied to a compressor must be
  5. Under cooling in a refrigeration cycle
  6. The reciprocating refrigerant compressors are very suitable for
  7. When the air is passed through an insulated chamber having sprays of water maintained at a temperature…
  8. Air refrigeration cycle is used in
  9. In a vapour compression system, the condition of refrigerant before entering the expansion or throttle…
  10. The human body feels comfortable when the heat stored in the body is
  11. The vapour pressure of refrigerant should be
  12. The C.O.P. of a refrigeration cycle with lowering of condenser temperature, keeping the evaporator temperature…
  13. For ammonia refrigerating systems, the tubes of a shell and tube condenser are made of
  14. A good refrigerant should have
  15. During adiabatic saturation process on unsaturated air __________ remains constant.
  16. The general rule for rating refrigeration systems (excepting for CO₂ system) is to approximate…
  17. The dry bulb temperature lines, on the psychrometric chart are
  18. The refrigerant after condensation process is cooled below the saturation temperature before throttling.…
  19. The bypass factor, in case of sensible cooling of air, is given by (where td₁ = Dry bulb temperature…
  20. Short horizontal lines on pressure-enthalpy chart show
  21. A mixture of dry air and water vapour, when the air has diffused the maximum amount of water vapour…
  22. While designing the refrigeration system of an aircraft, the prime consideration is that the
  23. The index which correlates the combined effects of air temperature, relative humidity and air velocity…
  24. Most of the domestic refrigerators work on the following refrigeration system
  25. The boiling point of ________ is 10.5°C.
  26. The thermostatic expansion valve is also called
  27. Which of the following statement is wrong?
  28. The heat rejection factor (HRF) is given by
  29. The boiling point of ammonia is
  30. One ton of refrigeration is equal to the refrigeration effect corresponding to melting of 1000 kg of…