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When the temperature of the surrounding is higher than the temperature of the body, then the heat loss by convection from the body to the surrounding will be

A. Positive

B. Negative

C. Zero

D. None of these

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

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  1. The evaporator changes the low pressure liquid refrigerant from the expansion valve into
  2. Which of the following cycles uses air as the refrigerant?
  3. In a psychrometric process, the sensible heat added is 30 kJ/s and the latent heat added is 20 kJ/s.…
  4. In larger industrial and commercial reciprocating compression systems, refrigerant widely used is
  5. During sensible heating of air _________ decreases.
  6. Oil separator in a refrigeration cycle is installed
  7. One of the purposes of sub cooling the liquid refrigerant is to
  8. The conditioned air supplied to the room must have the capacity to take up
  9. The optimum effective temperature for human comfort is
  10. Choose the correct statement
  11. The evaporator used in household refrigerators is
  12. During humidification process, __________ increases.
  13. In a pressure enthalpy chart, the space to the left of the saturated liquid line represents
  14. The comfort conditions in air conditioning are at (where DBT = Dry bulb temperature, and RH = Relative…
  15. For better C.O.P of refrigerator, the pressure range corresponding to temperature in evaporator and…
  16. When the lower temperature of a refrigerating machine is fixed, then the coefficient of performance…
  17. The colour of the flame of halide torch, in case of leakage of Freon refrigerant, will change to
  18. The cooling system used for supersonic aircrafts and rockets is
  19. The evolution of heat of solution takes place in ammonia absorption plant when
  20. Carbon dioxide is
  21. During adiabatic saturation process on unsaturated air __________ remains constant.
  22. A refrigerating system operating on reversed Brayton refrigeration cycle is used for maintaining 250…
  23. Formation of frost on evaporator in refrigerator
  24. A refrigeration cycle operates between condenser temperature of + 27°C and evaporator temperature…
  25. The operating temperature of a cold storage is 2°C. The heat leakage from the surrounding is 30…
  26. In case of sensible heating of air, the coil efficiency is given by (where B.P.F. = Bypass factor)
  27. A thermostatic expansion valve in a refrigeration system
  28. Chaperon equation is applicable for registration at
  29. Hydrogen is used in Electrolux refrigeration system so as to _________ the rate of evaporation of the…
  30. At lower temperatures and pressures, the latent heat of vaporisation of a refrigerant