Refrigeration and Air Conditioning Which of the following refrigerant has the lowest freezing point? Ammonia R-22 R-12 R-11 Ammonia R-22 R-12 R-11 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 50 kJ/kg 125 kJ/kg 100 kJ/kg 25 kJ/kg 50 kJ/kg 125 kJ/kg 100 kJ/kg ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning In a saturated air-water vapour mixture, the Dry bulb, wet bulb and dew point temperature are same Dew point temperature is lower than wet bulb temperature Dry bulb temperature is higher than dew point temperature Dry bulb temperature is higher than wet bulb temperature Dry bulb, wet bulb and dew point temperature are same Dew point temperature is lower than wet bulb temperature Dry bulb temperature is higher than dew point temperature Dry bulb temperature is higher than wet bulb temperature ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The freezing point of R-12 is -86.6°C -107.7°C -135.8°C -95.2°C -86.6°C -107.7°C -135.8°C -95.2°C ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning Which of the following statement is correct? The wet bulb and dry bulb temperature are equal at saturation condition All of the listed here The wet bulb temperature is a measure of enthalpy of moist air The constant enthalpy lines are also constant wet bulb temperature lines The wet bulb and dry bulb temperature are equal at saturation condition All of the listed here The wet bulb temperature is a measure of enthalpy of moist air The constant enthalpy lines are also constant wet bulb temperature lines ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The bank of tubes at the back of domestic refrigerator is Condenser tubes Capillary tubes Refrigerant cooling tubes Evaporator tubes Condenser tubes Capillary tubes Refrigerant cooling tubes Evaporator tubes ANSWER DOWNLOAD EXAMIANS APP
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