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A vapour absorption refrigerator uses __________ as a refrigerant.

A. Water

B. Ammonia

C. Freon

D. Aqua-ammonia

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

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  1. The C.O.P. of a refrigerator working on a reversed Carnot cycle is (where T₁ = Lowest absolute…
  2. Aqua ammonia is used as refrigerant in the following type of refrigeration system
  3. During sensible cooling,
  4. Which of the following statement is correct for ammonia as a refrigerant?
  5. Moisture should be removed from refrigerants to avoid
  6. Which of the following refrigerant has the maximum ozone depletion potential in the stratosphere?
  7. A pressure gauge on the discharge side of a refrigerant compressor reads too high. The reasons will…
  8. If a heat pump cycle operates between the condenser temperature of +27°C and evaporator temperature…
  9. The value of C.O.P in vapour compression cycle is usually
  10. Air refrigeration cycle is used in
  11. During sensible cooling of air ________ decreases.
  12. Most of the domestic refrigerators work on the following refrigeration system
  13. The colour of the flame of halide torch, in case of leakage of Freon refrigerant, will change to
  14. When the temperature of the surrounding is higher than the temperature of the body, then the heat loss…
  15. A vapour absorption refrigeration system
  16. The superheated vapour region, in a pressure enthalpy chart, is represented by the space
  17. During heating and dehumidification process, dry bulb temperature
  18. In refrigerator, liquid receiver is required between condenser and flow controlling device, if quantity…
  19. A valve which maintains a constant degree of superheat at the end of the evaporator coil, is called
  20. In a flooded evaporator refrigerator, an accumulator at suction of compressor is used to
  21. The wet bulb temperature during sensible cooling of air
  22. The minimum temperature to which water can be cooled in a cooling tower is
  23. For ammonia refrigerating systems, the tubes of a shell and tube condenser are made of
  24. The bypass factor, in case of sensible cooling of air, is given by (where td₁ = Dry bulb temperature…
  25. The refrigerant widely used in domestic refrigerators is
  26. In case of sensible cooling of air, the coil efficiency is given by
  27. The comfort conditions in air conditioning are at (where DBT = Dry bulb temperature, and RH = Relative…
  28. The reciprocating refrigerant compressors are very suitable for
  29. Formation of frost on evaporator in refrigerator
  30. The boiling point of ________ is 10.5°C.