Refrigeration and Air Conditioning The leakage in a refrigeration system using ammonia is detected by Soap and water Halide torch Sulphur sticks All of these Soap and water Halide torch Sulphur sticks All of these ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning In vapour compression cycle using NH₃ as refrigerant, initial charge is filled at Delivery of compressor High pressure side close to receiver Suction of compressor Low pressure side near receiver Delivery of compressor High pressure side close to receiver Suction of compressor Low pressure side near receiver ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning Which of the following refrigerant is highly toxic and flammable? Sulphur dioxide Carbon dioxide R-12 Ammonia Sulphur dioxide Carbon dioxide R-12 Ammonia ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The thermostatic expansion valve operates on the changes in the None of these Degree of superheat at exit from the evaporator Temperature of the evaporator Pressure in the evaporator None of these Degree of superheat at exit from the evaporator Temperature of the evaporator Pressure in the evaporator 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) 25 kJ/kg 125 kJ/kg 100 kJ/kg 50 kJ/kg 25 kJ/kg 125 kJ/kg 100 kJ/kg 50 kJ/kg ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning Which of the following statement is correct? The wet bulb temperature is a measure of enthalpy of moist air The wet bulb and dry bulb temperature are equal at saturation condition All of the listed here The constant enthalpy lines are also constant wet bulb temperature lines The wet bulb temperature is a measure of enthalpy of moist air The wet bulb and dry bulb temperature are equal at saturation condition All of the listed here The constant enthalpy lines are also constant wet bulb temperature lines ANSWER DOWNLOAD EXAMIANS APP
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