Refrigeration and Air Conditioning The temperature of air recorded by a thermometer, when its bulb is surrounded by a wet cloth exposed to the air, is called Dry bulb temperature None of these Wet bulb temperature Dew point temperature Dry bulb temperature None of these Wet bulb temperature Dew point temperature 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) 50 kJ/kg 25 kJ/kg 125 kJ/kg 100 kJ/kg 50 kJ/kg 25 kJ/kg 125 kJ/kg 100 kJ/kg ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The ratio of heat extracted in the refrigerator to the work-done on the refrigerant is called Relative coefficient of performance Refrigerating efficiency Coefficient of performance of heat pump Coefficient of performance of refrigeration Relative coefficient of performance Refrigerating efficiency Coefficient of performance of heat pump Coefficient of performance of refrigeration ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning If the evaporator temperature of a plant is lowered, keeping the condenser temperature constant, the h.p. of compressor required will be Less More/less depending on rating Same More Less More/less depending on rating Same More ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The refrigerant supplied to a compressor must be None of these A mixture of liquid and vapour refrigerant Superheated vapour refrigerant Dry saturated liquid refrigerant None of these A mixture of liquid and vapour refrigerant Superheated vapour refrigerant Dry saturated liquid refrigerant ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The refrigerant used for absorption refrigerators working on heat from solar collectors is a mixture of water and Sulphur dioxide Carbon dioxide R-12 Lithium bromide Sulphur dioxide Carbon dioxide R-12 Lithium bromide ANSWER DOWNLOAD EXAMIANS APP
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