Refrigeration and Air Conditioning The leakage in a refrigeration system using ammonia is detected by All of these Halide torch Soap and water Sulphur sticks All of these Halide torch Soap and water Sulphur sticks 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.)R + 2 O.P)R - 1 ( O.P.)R + 1 O.P)P = ( O.P)R O.P)P = ( O.P.)P = ( ( ( ( O.P.)P = ( O.P.)R + 2 O.P)R - 1 ( O.P.)R + 1 O.P)P = ( O.P)R O.P)P = ( O.P.)P = ( ( ( ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The process, generally used in winter air-conditioning to warm and humidity the air, is called Heating and humidification Humidification Cooling and dehumidification Dehumidification Heating and humidification Humidification Cooling and dehumidification Dehumidification ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The advantage of dry compression is that It permits complete evaporation in the evaporator It results in high volumetric and mechanical efficiency All of these It permits higher speeds to be used It permits complete evaporation in the evaporator It results in high volumetric and mechanical efficiency All of these It permits higher speeds to be used ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning A refrigerating system operating on reversed Brayton refrigeration cycle is used for maintaining 250 K. If the temperature at the end of constant pressure cooling is 300 K and rise in the temperature of air in the refrigerator is 50 K, then the net work of compression will be (assume air as working substance with Cp = 1 kJ/kg) 100 kJ/kg 50 kJ/kg 25 kJ/kg 125 kJ/kg 100 kJ/kg 50 kJ/kg 25 kJ/kg 125 kJ/kg ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning Dry bulb temperature is the temperature of air recorded by a thermometer, when It is not affected by the moisture present in the air The moisture present in it begins to condense Its bulb is surrounded by a wet cloth exposed to the air None of the listed here It is not affected by the moisture present in the air The moisture present in it begins to condense Its bulb is surrounded by a wet cloth exposed to the air None of the listed here ANSWER DOWNLOAD EXAMIANS APP
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