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The dehumidification process, on the psychrometric chart, is shown by

A. Horizontal line

B. Vertical line

C. Inclined line

D. Curved line

Correct Answer : B.


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  1. The COP of a vapour compression plant in comparison to vapour absorption plant is
  2. A refrigeration system
  3. The process of under-cooling is generally brought about by
  4. In vapour compression cycle, the condition of refrigerant is very wet vapour
  5. Degree of saturation or percentage humidity is
  6. When the lower temperature of a refrigerating machine is fixed, then the coefficient of performance…
  7. Chaperon equation is applicable for registration at
  8. In a flooded evaporator refrigerator, an accumulator at suction of compressor is used to
  9. During sensible cooling of air, specific humidity
  10. In vapour compression refrigeration system, refrigerant occurs as liquid between
  11. The wet bulb temperature at 100% relative humidity is ________ dew point temperature.
  12. Nusselt number (NN) is given by
  13. The bank of tubes at the back of domestic refrigerator is
  14. Moisture should be removed from refrigerants to avoid
  15. The temperature of air recorded by a thermometer, when its bulb is surrounded by a wet cloth exposed…
  16. The bypass factor for a cooling coil
  17. The freezing point of sulphur dioxide is
  18. Bell Coleman cycle is a
  19. Which of the following statement is correct?
  20. In aqua ammonia absorption refrigeration system, incomplete rectification leads to accumulation of water…
  21. In chemical dehumidification process,
  22. The operating pressure for refrigerating units using R-12 as a refrigerant is
  23. A one tonne refrigerating machine means that
  24. In a vapour compression cycle, the refrigerant immediately after expansion valve is
  25. Absorption system normally uses the following refrigerant
  26. Allowable pressure on high pressure side or ammonia absorption system is of the order of
  27. The ratio of actual mass of water vapour in a given volume of moist air to the mass of water vapour…
  28. A vapour absorption refrigerator uses __________ as a refrigerant.
  29. In a domestic vapour compression refrigerator, the refrigerant commonly used is
  30. During heating and humidification, the final relative humidity of air