The index which correlates the combined effects of air temperature, relative humidity and air velocity on the human body, is known as

A. Mean radiant temperature

B. Effective temperature

C. Dew point temperature

D. None of these

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  1. In larger industrial and commercial reciprocating compression systems, refrigerant widely used is
  2. Nusselt number (NN) is given by
  3. The desirable property of a refrigerant is
  4. The COP of a domestic refrigerator
  5. Rating of a domestic refrigerator is of the order of
  6. The lower horizontal line of the refrigeration cycle plotted on pressure-enthalpy diagram represents
  7. Most thermostatic expansion valves are set for a superheat of
  8. One ton of refrigeration is equal to the refrigeration effect corresponding to melting of 1000 kg of…
  9. Hydrogen is used in Electrolux refrigeration system so as to _________ the rate of evaporation of the…
  10. The sensible heat factor during cooling and dehumidification process is given by (where h₁ =…
  11. The alignment circle is marked on the psychrometric chart at
  12. The superheated vapour region, in a pressure enthalpy chart, is represented by the space
  13. The evaporator changes the low pressure liquid refrigerant from the expansion valve into
  14. The vapour compression refrigerator employs the following cycle
  15. A vapour absorption refrigeration system
  16. The process of under-cooling is generally brought about by
  17. In aircraft, air refrigeration Cycle is used because of
  18. The wet bulb temperature at 100% relative humidity is ________ dew point temperature.
  19. The coefficient of performance is the ratio of the refrigerant effect to the
  20. The humidification process, on the psychrometric chart is shown by
  21. The unit of thermal diffusivity is
  22. The capillary tube, as an expansion device, is used in
  23. A thermostatic expansion valve in a refrigeration system
  24. Moisture in Freon refrigeration system causes
  25. Cooling water is required for following equipment in ammonia absorption plant
  26. The dehumidification process, on the psychrometric chart, is shown by
  27. Relative humidity is given by (where pv = Partial pressure of water vapour, pb = Barometric pressure,…
  28. Wet bulb temperature is the temperature of air recorded by a thermometer, when
  29. In vapour compression cycle, the condition of refrigerant is very wet vapour
  30. The C.O.P. of an absorption type refrigerator is given by (where T₁ = Temperature at which the…