Refrigeration and Air Conditioning Allowable pressure on high pressure side or ammonia absorption system is of the order of Atmospheric pressure 24 bars Slightly above atmospheric pressure 56 bars Atmospheric pressure 24 bars Slightly above atmospheric pressure 56 bars ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The humidity ratio or specific humidity is the mass of water vapour present in 1 kg of wet air 1 kg of dry air 1 m3 of wet air 1 m3 of dry air 1 kg of wet air 1 kg of dry air 1 m3 of wet air 1 m3 of dry air ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning R-12 is generally preferred over R-22 in deep freezers since It has low operating pressures It is miscible with oil over large range of temperatures All of these It gives higher coefficient of performance It has low operating pressures It is miscible with oil over large range of temperatures All of these It gives higher coefficient of performance ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The wet bulb temperature during sensible heating of air Increases Remains constant None of these Decreases Increases Remains constant None of these Decreases ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning A valve which maintains a constant degree of superheat at the end of the evaporator coil, is called Thermostatic expansion valve High side float valve Low side float valve Automatic expansion valve Thermostatic expansion valve High side float valve Low side float valve Automatic expansion valve ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The heat rejection factor (HRF) is given by 1 + (1/C.O.P) 1 - (1/C.O.P) 1 - C.O.P. 1 + C.O.P 1 + (1/C.O.P) 1 - (1/C.O.P) 1 - C.O.P. 1 + C.O.P ANSWER DOWNLOAD EXAMIANS APP
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