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Air conditioning means

A. Cooling

B. Heating

C. Dehumidifying

D. All of these

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  1. Which of the following statement is correct?
  2. Aqua ammonia is used as refrigerant in the following type of refrigeration system
  3. The dry bulb temperature lines, on the psychrometric chart are
  4. The thermostatic expansion valve is used in __________ type of evaporators.
  5. The coefficient of performance of Electrolux refrigerator is the ratio of
  6. The general rule for rating refrigeration systems (excepting for CO₂ system) is to approximate…
  7. The process, generally used in winter air-conditioning to warm and humidity the air, is called
  8. A mixture of dry air and water vapour, when the air has diffused the maximum amount of water vapour…
  9. The curved lines on a psychrometric chart indicates
  10. The emissivity of a polished silver body is __________ as compared to black body.
  11. Moisture in Freon refrigeration system causes
  12. The C.O.P. of a refrigeration cycle with lowering of condenser temperature, keeping the evaporator temperature…
  13. Degree of saturation or percentage humidity is
  14. The specific humidity during humidification process
  15. Dry bulb temperature is the temperature of air recorded by a thermometer, when
  16. The sensible heat factor during the heating and humidification process is given by (where h₁…
  17. In a vapour absorption refrigeration system, the compressor of the vapour compression system is replaced…
  18. The difference between dry bulb temperature and dew point temperature, is called
  19. In a spray washing system, if the temperature of water is higher than the dry bulb temperature of entering…
  20. Which of the following refrigerant has the lowest boiling point?
  21. In a vapour compression system, the condition of refrigerant before passing through the condenser is
  22. A certain refrigerating system has a normal operating suction pressure of 10 kg/cm gauge and condensing…
  23. The specific humidity during dehumidification process
  24. Vertical lines on pressure-enthalpy chart show constant
  25. When the temperature of the surrounding is higher than the temperature of the body, then the heat loss…
  26. During dehumidification process, the relative humidity
  27. The superheating in a refrigeration cycle
  28. The capillary tube is not used in large capacity refrigeration systems because
  29. The suction pipe diameter of refrigerating unit compressor in comparison to delivery side is
  30. In a bootstrap air evaporative cooling system, the evaporator is provided