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Most thermostatic expansion valves are set for a superheat of

A. 5°C

B. 10°C

C. 15°C

D. 20°C

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  1. Highest pressure encountered in a refrigeration system should be
  2. The Freon group of refrigerants are
  3. A bootstrap air cooling system has
  4. The leakage in a refrigeration system using Freon is detected by
  5. The wet bulb depression indicates _________ humidity of the air.
  6. An important characteristic of absorption system of refrigeration is
  7. In vapour compression cycle the condition off refrigerant is dry saturated vapour
  8. During a refrigeration cycle, heat is rejected by the refrigerant in a
  9. The fluids used in Electrolux refrigerator are
  10. In a vapour compression system, the condition of refrigerant is dry saturated vapour
  11. Which of the following statement is correct?
  12. For air conditioning the operation theatre in a hospital, the percentage of outside air in the air supplied…
  13. The conditioned air supplied to the room must have the capacity to take up
  14. The C.O.P. of a refrigeration cycle with lowering of condenser temperature, keeping the evaporator temperature…
  15. The humidity ratio or specific humidity is the mass of water vapour present in
  16. Ammonia is
  17. Which of the following refrigerant has the lowest boiling point?
  18. The condition of refrigerant after passing through the expansion or throttle valve, in a vapour compression…
  19. An infinite parallel planes with emissivities e₁ and e₂, the interchange factor for radiation…
  20. Cooling water is required for following equipment in ammonia absorption plant
  21. A good refrigerant should have
  22. In vapour compression cycle, the condition of refrigerant is high pressure saturated liquid
  23. In a vapour compression system, the condition of refrigerant before entering the expansion or throttle…
  24. Nusselt number (NN) is given by
  25. In a spray washing system, if the temperature of water is higher than the dry bulb temperature of entering…
  26. The general rule for rating refrigeration systems (excepting for CO₂ system) is to approximate…
  27. In a vapour compression cycle, the refrigerant immediately after expansion valve is
  28. The process, generally used in summer air conditioning to cool and dehumidify the air, is called
  29. The process, generally used in winter air-conditioning to warm and humidity the air, is called
  30. A refrigeration cycle operates between condenser temperature of + 27°C and evaporator temperature…