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The general rule for rating refrigeration systems (excepting for CO₂ system) is to approximate following h.p. per ton of refrigeration

A. 0.1 to 0.5 h.p. per ton of refrigeration

B. 0.5 to 0.8 h.p. per ton of refrigeration

C. 1 to 2 h.p. per ton of refrigeration

D. 2 to 5 h.p. per ton of refrigeration

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  1. The wet bulb temperature during sensible heating of air
  2. Vertical lines on pressure-enthalpy chart show constant
  3. Which of the following refrigerants has lowest freezing point?
  4. In vapour compression cycle using NH₃ as refrigerant, initial charge is filled at
  5. Which of the following cycles uses air as the refrigerant?
  6. The suction pipe diameter of refrigerating unit compressor in comparison to delivery side is
  7. In a saturated air-water vapour mixture, the
  8. The boiling point of ________ is 10.5°C.
  9. The coefficient of performance of Heat Pump is always __________ one.
  10. The domestic refrigerator uses following type of compressor
  11. The thermostatic expansion valve operates on the changes in the
  12. The humidity ratio or specific humidity is the mass of water vapour present in
  13. A vapour absorption refrigeration system
  14. In a vapour compression cycle, the refrigerant immediately after expansion valve is
  15. During adiabatic saturation process on unsaturated air __________ remains constant.
  16. The evaporator changes the low pressure liquid refrigerant from the expansion valve into
  17. A Bell Coleman refrigerator working on dense air system as compared to open air system, for the same…
  18. A valve which maintains a constant degree of superheat at the end of the evaporator coil, is called
  19. The evolution of heat of solution takes place in ammonia absorption plant when
  20. The capillary tube, as an expansion device, is used in
  21. The condition of refrigerant after passing through the expansion or throttle valve, in a vapour compression…
  22. The bypass factor, in case of sensible cooling of air, is given by (where td₁ = Dry bulb temperature…
  23. Most of the domestic refrigerators work on the following refrigeration system
  24. In air-conditioning of aeroplanes, using air as a refrigerant, the cycle used is
  25. The thermostatic expansion valve is also called
  26. The temperature of air recorded by a thermometer, when its bulb is surrounded by a wet cloth exposed…
  27. The sensible heat factor during cooling and dehumidification process is given by (where h₁ =…
  28. The moisture in a refrigerant is removed by
  29. An Electrolux refrigerator is called a __________ absorption system.
  30. A standard ice point temperature corresponds to the temperature of