51. The leakage in a refrigeration system using ammonia is detected by
52. The lower horizontal line of the refrigeration cycle plotted on pressure-enthalpy diagram represents
53. Which of the following refrigerant is highly toxic and flammable?
54. The wet bulb depression indicates _________ humidity of the air.
55. In case of sensible cooling of air, the coil efficiency is given by
56. The specific humidity during dehumidification process
57. The specific humidity during humidification process
58. The ratio of heat extracted in the refrigerator to the work-done on the refrigerant is called
59. The material of pipe lines for a system using Freon as a refrigerant should be
60. The vapour pressure of refrigerant should be
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