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The bank of tubes at the back of domestic refrigerator is

A. Condenser tubes

B. Evaporator tubes

C. Refrigerant cooling tubes

D. Capillary tubes

Correct Answer : A.


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  1. The fluids used in Electrolux refrigerator are
  2. The sensible heat factor during the heating and humidification process is given by (where h₁…
  3. Dry bulb temperature is the temperature of air recorded by a thermometer, when
  4. An evaporator is also known as
  5. The thermostatic expansion valve operates on the changes in the
  6. Which of the following refrigerant has the highest freezing point.
  7. When the air is passed through an insulated chamber having sprays of water maintained at a temperature…
  8. In a vapour compression system, the condition of refrigerant is dry saturated vapour
  9. One ton refrigeration corresponds to
  10. The leaks in a refrigeration system using Freon are detected by
  11. One of the purposes of sub cooling the liquid refrigerant is to
  12. The process of under-cooling is generally brought about by
  13. In refrigerator, liquid receiver is required between condenser and flow controlling device, if quantity…
  14. Ammonia is
  15. The leakage in a refrigeration system using Freon is detected by
  16. In a vapour compression system, the condition of refrigerant before passing through the condenser is
  17. For obtaining high COP, the pressure range of compressor should be
  18. The bypass factor for a cooling coil
  19. The atmospheric air at dry bulb temperature of 15°C enters a heating coil maintained at 40°C.…
  20. Critical pressure of a liquid is the pressure
  21. A valve which maintains a constant degree of superheat at the end of the evaporator coil, is called
  22. The bypass factor of a cooling coil decreases with
  23. The ratio of heat extracted in the refrigerator to the work-done on the refrigerant is called
  24. The condensing pressure due to the presence of non-condensable gases, as compared to that actually required…
  25. In larger industrial and commercial reciprocating compression systems, refrigerant widely used is
  26. An infinite parallel planes with emissivities e₁ and e₂, the interchange factor for radiation…
  27. If a gas is to be liquefied, its temperature must be
  28. The wet bulb depression is zero when relative humidity is
  29. In air-conditioning of aeroplanes, using air as a refrigerant, the cycle used is
  30. Accumulators should have adequate volume to store refrigerant charge at least