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Degree of saturation or percentage humidity is

A. The mass of water vapour present in 1 m³ of dry air

B. The mass of water vapour present in 1 kg of dry air

C. The ratio of the actual mass of water vapour in a unit mass of dry air to the mass of water vapour in the same mass of dry air when it is saturated at the same temperature and pressure.

D. The ratio of actual mass of water vapour in a given volume of moist air to the mass of water vapour in the same volume of saturated air at the same temperature and pressure

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

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  1. The C.O.P. of a Carnot refrigerator in winter will be _________ as compared to C.O.P. in summer.
  2. Which of the following refrigerants has lowest freezing point?
  3. The ratio of actual mass of water vapour in a given volume of moist air to the mass of water vapour…
  4. The pressure at the outlet of a refrigerant compressor is called
  5. In a vapour compression system, the condition of refrigerant is dry saturated vapour
  6. Rating of a domestic refrigerator is of the order of
  7. Which of the following cycles uses air as the refrigerant?
  8. The unit of thermal diffusivity is
  9. In a domestic vapour compression refrigerator, the refrigerant commonly used is
  10. The domestic refrigerator uses following type of compressor
  11. In vapour compression refrigeration system, refrigerant occurs as liquid between
  12. During cooling and dehumidification, dry bulb temperature
  13. The C.O.P of a refrigeration cycle with increase in evaporator temperature, keeping condenser temperature…
  14. The suction pipe diameter of refrigerating unit compressor in comparison to delivery side is
  15. For evaporators and condensers, for the given conditions, the logarithmic mean temperature difference…
  16. A mixture of dry air and water vapour, when the air has diffused the maximum amount of water vapour…
  17. The wet bulb temperature at 100% relative humidity is ________ dry bulb temperature.
  18. The C.O.P. of a heat pump working on a reversed Carnot cycle is
  19. The pressure at the inlet of a refrigerant compressor is called
  20. During humidification process, dry bulb temperature
  21. Oil separator in a refrigeration cycle is installed
  22. Air conditioning means
  23. The condition of refrigerant as it leaves the compressor in a vapour compression system is
  24. In vapour compression cycle the condition of refrigerant is superheated vapour
  25. The process, generally used in summer air conditioning to cool and dehumidify the air, is called
  26. Vapour compression refrigeration is somewhat like
  27. A vapour absorption refrigerator uses __________ as a refrigerant.
  28. In a refrigeration system, heat absorbed in comparison to heat rejected is
  29. During heating and dehumidification process, dry bulb temperature
  30. The material of pipe lines for a system using Freon as a refrigerant should be