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Domestic refrigerator working on vapour compression cycle uses the following type of expansion device

A. Electrically operated throttling valve

B. Manually operated valve

C. Thermostatic valve

D. Capillary tube

Correct Answer : D.


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  1. The difference between dry bulb temperature and dew point temperature, is called
  2. The ratio of heat extracted in the refrigerator to the work-done on the refrigerant is called
  3. The COP of a vapour compression plant in comparison to vapour absorption plant is
  4. Degree of saturation or percentage humidity is
  5. In a vapour compression system, the condition of refrigerant before passing through the condenser is
  6. The human body feels comfortable when the heat stored in the body is
  7. The lowest temperature during the cycle in a vapour compression system occurs after
  8. The heat rejection factor (HRF) is given by
  9. During heating and dehumidification process, dry bulb temperature
  10. One tonne of refrigeration (1TR) means that the heat removing capacity is
  11. The undesirable property of a refrigerant is
  12. The dry bulb temperature during sensible heating of air
  13. In a pressure enthalpy chart, the space to the left of the saturated liquid line represents
  14. A refrigeration cycle operates between condenser temperature of + 27°C and evaporator temperature…
  15. A condenser of refrigeration system rejects heat at the rate of 120 kW, while its compressor consumes…
  16. Moisture should be removed from refrigerants to avoid
  17. The condition of refrigerant as it leaves the compressor in a vapour compression system is
  18. Chaperon equation is a relation between
  19. The capacity of a domestic refrigerator is in the range of
  20. Pick up the wrong statement. A refrigerant should have
  21. The thermostatic expansion valve is used in __________ type of evaporators.
  22. Relative humidity is given by (where pv = Partial pressure of water vapour, pb = Barometric pressure,…
  23. The refrigeration effect in a dry evaporator compared to flooded evaporator in a similar plant is
  24. Most of the domestic refrigerators work on the following refrigeration system
  25. Which of the following is not a desirable property of a refrigerant?
  26. In a psychrometric process, the sensible heat added is 30 kJ/s and the latent heat added is 20 kJ/s.…
  27. Air refrigeration operates on
  28. The superheated vapour region, in a pressure enthalpy chart, is represented by the space
  29. In a vapour compression system, the condition of refrigerant is dry saturated vapour
  30. A good refrigerant should have