Critical temperature is the temperature above which

A. A gas will never liquefy

B. A gas will immediately liquefy

C. Water will evaporate

D. Water will never evaporate

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  1. One ton of the refrigeration is
  2. The horizontal and non-uniformly spaced lines on a psychrometric chart indicates
  3. The refrigerant supplied to a compressor must be
  4. The operating pressure for refrigerating units using R-12 as a refrigerant is
  5. The heat rejection factor (HRF) is given by
  6. The wet bulb temperature at 100% relative humidity is ________ dry bulb temperature.
  7. The relative humidity lines on a psychrometric chart are
  8. Highest temperature encountered in refrigeration cycle should be
  9. A refrigerant compressor is used to
  10. The vertical and uniformly spaced lines on a psychrometric chart indicates
  11. The C.O.P. of a refrigerator working on a reversed Carnot cycle is (where T₁ = Lowest absolute…
  12. In vapour compression cycle the condition of refrigerant is superheated vapour
  13. Efficiency of a Carnot engine is given as 80%. If the cycle direction be reversed, what will be the…
  14. The alignment circle is marked on the psychrometric chart at
  15. The condition of refrigerant as it leaves the compressor in a vapour compression system is
  16. In actual air-conditioning applications for R-12 and R-22, and operating at a condenser temperature…
  17. The optimum effective temperature for human comfort is
  18. In a spray washing system, if the temperature of water is higher than the dry bulb temperature of entering…
  19. Which of the following is not a desirable property of a refrigerant?
  20. During heating and humidification, the final relative humidity of air
  21. The bank of tubes at the back of domestic refrigerator is
  22. Ammonia absorption refrigeration cycle requires
  23. During sensible cooling of air, specific humidity
  24. The capillary tube is not used in large capacity refrigeration systems because
  25. The domestic refrigerator uses following type of compressor
  26. The reciprocating refrigerant compressors are very suitable for
  27. The bypass factor for a cooling coil
  28. Rick up the incorrect statement
  29. A refrigeration cycle operates between condenser temperature of + 27°C and evaporator temperature…
  30. In which of the following refrigeration system, waste heat can be effectively used?