The reciprocating refrigerant compressors are very suitable for

A. Small displacements and low condensing pressures

B. Large displacements and high condensing pressures

C. Small displacements and high condensing pressures

D. Large displacements and low condensing pressures

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  1. The lower horizontal line of the refrigeration cycle plotted on pressure-enthalpy diagram represents
  2. Which of the following refrigerant has the maximum ozone depletion potential in the stratosphere?
  3. Chaperon equation is applicable for registration at
  4. A heat pump working on a reversed Carnot cycle has a C.O.P. of 5. It works as a refrigerator taking…
  5. During dehumidification process, the relative humidity
  6. A refrigerant compressor is used to
  7. In a domestic refrigerator, a capillary tube controls the flow of refrigerant from the
  8. Freon group of refrigerants are
  9. One ton refrigeration corresponds to
  10. In a refrigerating machine, heat rejected is _________ heat absorbed.
  11. During cooling and dehumidification, dry bulb temperature
  12. In vapour compression cycle the condition of refrigerant is superheated vapour
  13. The boiling point of carbon dioxide is
  14. A good refrigerant should have
  15. During sensible heating of air _________ decreases.
  16. The COP of a domestic refrigerator
  17. The condition of refrigerant after passing through the condenser in a vapour compression system is
  18. The emissivity of a polished silver body is __________ as compared to black body.
  19. The wet bulb temperature at 100% relative humidity is ________ dry bulb temperature.
  20. Which of the following refrigerant has the lowest boiling point?
  21. Highest temperature encountered in refrigeration cycle should be
  22. The COP of a vapour compression plant in comparison to vapour absorption plant is
  23. In order to cool and dehumidify a stream of moist air, it must be passed over the coil at a temperature
  24. Degree of saturation or percentage humidity is
  25. Most thermostatic expansion valves are set for a superheat of
  26. Choose the wrong statement
  27. The evaporator changes the low pressure liquid refrigerant from the expansion valve into
  28. Air refrigeration cycle is used in
  29. The relative humidity is defined as
  30. The wet bulb depression is zero when relative humidity is