Refrigeration and Air Conditioning The coefficient of performance (C.O.P.) of a refrigerator working as a heat pump is given by O.P.)R + 2 O.P.)P = ( O.P.)R + 1 ( ( O.P)R O.P)P = ( ( ( O.P)R - 1 O.P)P = ( O.P.)P = ( O.P.)R + 2 O.P.)P = ( O.P.)R + 1 ( ( O.P)R O.P)P = ( ( ( O.P)R - 1 O.P)P = ( O.P.)P = ( ANSWER DOWNLOAD EXAMIANS APP
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 1: 1 1: 9 1: 3 9: 1 1: 1 1: 9 1: 3 9: 1 ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The temperature of ammonia after compression in a vapour compression system is 70 to 110°C 50 to 70°C None of these 20 to 50°C 70 to 110°C 50 to 70°C None of these 20 to 50°C ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The freezing point of R-12 is -107.7°C -95.2°C -86.6°C -135.8°C -107.7°C -95.2°C -86.6°C -135.8°C ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning A vapour absorption refrigeration system Gives noisy operation Requires little power consumption Cools below 0°C Gives quiet operation Gives noisy operation Requires little power consumption Cools below 0°C Gives quiet operation ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The leakage in a refrigeration system using Freon is detected by Sulphur sticks Halide torch Soap and water All of these Sulphur sticks Halide torch Soap and water All of these ANSWER DOWNLOAD EXAMIANS APP
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