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In aircraft, air refrigeration Cycle is used because of

A. Low weight per tonne of refrigeration

B. High heat transfer rate

C. Low temperature at high altitudes

D. Higher coefficient of performance

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  1. The refrigeration effect in a dry evaporator compared to flooded evaporator in a similar plant is
  2. The material of pipe lines for a system using Freon as a refrigerant should be
  3. For evaporators and condensers, for the given conditions, the logarithmic mean temperature difference…
  4. In a psychrometric chart, specific humidity (moisture content) lines are
  5. The wet bulb depression is zero when relative humidity is
  6. Critical temperature is the temperature above which
  7. The capacity of a domestic refrigerator is in the range of
  8. The capillary tube is not used in large capacity refrigeration systems because
  9. In a vapour compression cycle, the refrigerant immediately after expansion valve is
  10. The vapour compression refrigerator employs the following cycle
  11. Refrigeration in aeroplanes usually employs the following refrigerant
  12. The sensible heat factor during the heating and humidification process is given by (where h₁…
  13. The heat rejection factor (HRF) is given by
  14. Highest temperature encountered in refrigeration cycle should be
  15. A good refrigerant should have
  16. During heating and dehumidification process, dry bulb temperature
  17. Air refrigeration cycle is used in
  18. The thermostatic expansion valve is used in __________ type of evaporators.
  19. When the temperature of the surrounding is higher than the temperature of the body, then the heat loss…
  20. In S.J. unit, one ton of refrigeration is equal to
  21. The vapour pressure of refrigerant should be
  22. During sensible cooling of air ________ decreases.
  23. Critical pressure of a liquid is the pressure
  24. The humidification process, on the psychrometric chart is shown by
  25. Which of the following statement is wrong?
  26. The lower horizontal line of the refrigeration cycle plotted on pressure-enthalpy diagram represents
  27. An important characteristic of absorption system of refrigeration is
  28. For large tonnage (more than 200 TR) air-conditioning applications, the compressor recommended is
  29. The wet bulb temperature at 100% relative humidity is ________ dry bulb temperature.
  30. Which of the following statement is correct?