Q. In actual air-conditioning applications for R-12 and R-22, and operating at a condenser temperature of 40° C and an evaporator temperature of 5° C, the heat rejection factor is about

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Q. The undesireable property of a refrigerant is

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Q. The dry bulb temperature during sensible heating of air

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Q. Radiation is the process of heat transfer in which heat flows from a __________ , in a straight line, without affecting the intervening medium.

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Q. The heating of air, without any change in its specific humidity, is known as sensible heating.

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Q. During sensible cooling of air, specific humidity

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Q. The transfer of heat by molecular collision is known as

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Q. In a psychrometric chart, specific humidity (moisture content) lines are

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Q. The expression Q = ρ AT4 is called

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Q. The capillary tube, as an expansion device, is used in

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Q. In aircraft, air refrigeration Cycle is used because of

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Q. The material of pipe lines for a system using freon as a refrigerant should be

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Q. The temperature of air recorded by a thermometer, when the moisture present in it begins to condense, is called wet bulb temperature.

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Q. In a pressure enthalpy chart, the space to the left of the saturated liquid line represents

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Q. It is desired to condition the outside air from 70% relative humidity and 45° C dry bulb temperature to 50% relative humidity and 25° C dry bulb temperature (room condition). The practical arrangement will be

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Q. During heating and dehumidification process, dry bulb temperature

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Q. The C.O.P. of a refrigerator working on a reversed Carnot cycle is (where T1 = Lowest absolute temperature, and T2 = Highest absolute temperature)

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Q. A refrigerant compressor is used to

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Q. In which of the following refrigeration system, waste heat can be effectively used?

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Q. The temperature of air recorded by a thermometer, when it is not effected by the moisture present in the air, is called

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