Refrigeration and Air Conditioning The refrigerant used in small tonnage commercial machines (hermetically sealed units) is Sulphur dioxide Carbon dioxide R-12 Ammonia Sulphur dioxide Carbon dioxide R-12 Ammonia ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning A vapour absorption refrigeration system Gives quiet operation Cools below 0°C Requires little power consumption Gives noisy operation Gives quiet operation Cools below 0°C Requires little power consumption Gives noisy operation ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning Superheating in a refrigeration cycle Decreases C.O.P O.P remains unaltered Other factors decide C.O.P Increases C.O.P Decreases C.O.P O.P remains unaltered Other factors decide C.O.P Increases C.O.P ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The curved lines on a psychrometric chart indicates Wet bulb temperature Dry bulb temperature Relative humidity Dew point temperature Wet bulb temperature Dry bulb temperature Relative humidity Dew point temperature ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning Highest pressure encountered in a refrigeration system should be Much below critical pressure Much above critical pressure Critical pressure of refrigerant Near critical pressure Much below critical pressure Much above critical pressure Critical pressure of refrigerant Near critical pressure ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning In Electrolux refrigerator Ammonia evaporates in hydrogen Ammonia is absorbed in water Hydrogen evaporates in ammonia Ammonia is absorbed in hydrogen Ammonia evaporates in hydrogen Ammonia is absorbed in water Hydrogen evaporates in ammonia Ammonia is absorbed in hydrogen ANSWER DOWNLOAD EXAMIANS APP