Refrigeration and Air Conditioning Reducing suction pressure in refrigeration cycle Increases power required per ton of refrigeration Lowers compressor capacity because vapour is lighter All of these Lowers evaporation temperature Increases power required per ton of refrigeration Lowers compressor capacity because vapour is lighter All of these Lowers evaporation temperature ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning In a refrigerating machine, heat rejected is _________ heat absorbed. None of these Greater than Less than Equal to None of these Greater than Less than Equal to ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning A vapour absorption refrigerator uses _________ as a refrigerant. Freon Aqua-ammonia Ammonia Water Freon Aqua-ammonia Ammonia Water ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning At lower temperatures and pressures, the latent heat of vaporisation of a refrigerant increases remains same depends on other factors decreases increases remains same depends on other factors decreases ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The coefficient of performance (C.O.P.) of a refrigerator working as a heat pump is given by O.P.)P = ( O.P)P = ( O.P.)P = ( O.P)R ( O.P)P = ( O.P.)R + 2 ( ( O.P.)R + 1 ( O.P)R - 1 O.P.)P = ( O.P)P = ( O.P.)P = ( O.P)R ( O.P)P = ( O.P.)R + 2 ( ( O.P.)R + 1 ( O.P)R - 1 ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning 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 Dehumidification and pure sensible cooling Dehumidification Cooling and dehumidification Cooling and humidification Dehumidification and pure sensible cooling Dehumidification Cooling and dehumidification Cooling and humidification ANSWER DOWNLOAD EXAMIANS APP
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