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For unsaturated air, the dew point temperature is __________ wet bulb temperature.

A. Equal to

B. Less than

C. More than

D. None of these

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

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  1. The higher temperature in vapour compression cycle occurs at
  2. The process, generally used in summer air conditioning to cool and dehumidify the air, is called
  3. In which of the following refrigeration system, waste heat can be effectively used?
  4. Hydrogen is used in Electrolux refrigeration system so as to _________ the rate of evaporation of the…
  5. In case of sensible heating of air, the coil efficiency is given by (where B.P.F. = Bypass factor)
  6. The refrigerant used for absorption refrigerators working on heat from solar collectors is a mixture…
  7. The process, generally used in winter air-conditioning to warm and humidity the air, is called
  8. Condensing temperature in a refrigerator is the temperature
  9. The general rule for rating refrigeration systems (excepting for CO₂ system) is to approximate…
  10. The material of pipe lines for a system using Freon as a refrigerant should be
  11. Short horizontal lines on pressure-enthalpy chart show
  12. Which of the following refrigerant is highly toxic and flammable?
  13. A valve which maintains a constant degree of superheat at the end of the evaporator coil, is called
  14. A standard ice point temperature corresponds to the temperature of
  15. In a spray washing system, if the temperature of water is higher than the dry bulb temperature of entering…
  16. The coefficient of performance (C.O.P.) of a refrigerator working as a heat pump is given by
  17. A vapour absorption refrigerator uses __________ as a refrigerant.
  18. The operating temperature of a cold storage is 2°C. The heat leakage from the surrounding is 30…
  19. The thermal diffusivity for gases is generally __________ those for liquids.
  20. In a refrigerating machine, heat rejected is _________ heat absorbed.
  21. The boiling point of carbon dioxide is
  22. When the air is passed through an insulated chamber having sprays of water maintained at a temperature…
  23. The coefficient of performance of Electrolux refrigerator is the ratio of
  24. The alignment circle is marked on the psychrometric chart at
  25. In S.J. unit, one ton of refrigeration is equal to
  26. The optimum effective temperature for human comfort is
  27. Which of the following statement is correct?
  28. Domestic refrigerator working on vapour compression cycle uses the following type of expansion device
  29. In order to cool and dehumidify a stream of moist air, it must be passed over the coil at a temperature
  30. Rating of a domestic refrigerator is of the order of