Refrigeration and Air Conditioning A condenser of refrigeration system rejects heat at the rate of 120 kW, while its compressor consumes a power of 30 kW. The coefficient of performance of the system will be 43834 4 3 43833 43834 4 3 43833 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 Same More More/less depending on rating Less Same More More/less depending on rating Less ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The unit of thermal diffusivity is m/h m²/h m/hK m²/hK m/h m²/h m/hK m²/hK ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning Which of the following refrigerant has the maximum ozone depletion potential in the stratosphere? Sulphur dioxide Carbon dioxide Ammonia Fluorine Sulphur dioxide Carbon dioxide Ammonia Fluorine ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning On the pressure-enthalpy diagram, condensation and desuperheating is represented by a horizontal line because the process Takes place at constant pressure Takes place at constant temperature Involves no change in volume Takes place at constant entropy Takes place at constant pressure Takes place at constant temperature Involves no change in volume Takes place at constant entropy ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning Formation of frost on evaporator in refrigerator Results in loss of heat due to poor heat transfer Can be avoided by proper design Increases heat transfer rate Is immaterial Results in loss of heat due to poor heat transfer Can be avoided by proper design Increases heat transfer rate Is immaterial ANSWER DOWNLOAD EXAMIANS APP
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