Refrigeration and Air Conditioning Mass flow ratio of NH₃ in comparison to Freon-12 for same refrigeration load and same temperature limits is of the order of 9: 1 1: 3 1: 1 1: 9 9: 1 1: 3 1: 1 1: 9 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 During cooling and dehumidification, dry bulb temperature Remains constant Increases None of these Decreases Remains constant Increases None of these Decreases ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning During adiabatic saturation process on unsaturated air ___ remains constant. Dew point temperature Dry bulb temperature Wet bulb temperature Relative humidity Dew point temperature Dry bulb temperature Wet bulb temperature Relative humidity ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning Which of the following cycles uses air as the refrigerant? Stirling Ericson Carnot Bell Coleman Stirling Ericson Carnot Bell Coleman 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 - 1 O.P.)R + 2 O.P.)R + 1 O.P)R O.P.)P = ( O.P.)P = ( ( O.P)P = ( ( O.P)P = ( ( ( O.P)R - 1 O.P.)R + 2 O.P.)R + 1 O.P)R O.P.)P = ( ANSWER DOWNLOAD EXAMIANS APP
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