Refrigeration and Air Conditioning In aircraft, air refrigeration Cycle is used because of Low temperature at high altitudes High heat transfer rate Higher coefficient of performance Low weight per tonne of refrigeration Low temperature at high altitudes High heat transfer rate Higher coefficient of performance Low weight per tonne of refrigeration ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The air cooling system mostly used in transport type aircrafts is Bootstrap air cooling system All of the listed here Simple evaporative air cooling system Simple air cooling system Bootstrap air cooling system All of the listed here Simple evaporative air cooling system Simple air cooling system ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The C.O.P. of a Carnot refrigerator in winter will be _________ as compared to C.O.P. in summer. None of these Lower Higher Same None of these Lower Higher Same ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning When the air is passed through an insulated chamber having sprays of water maintained at a temperature higher than the dew point temperature of entering air but lower than its dry bulb temperature, then the air is said to be Heated and humidified Heated and dehumidified Cooled and humidified Cooled and dehumidified Heated and humidified Heated and dehumidified Cooled and humidified Cooled and dehumidified ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning Environmental protection agencies advice against the use of chlorofluorocarbon refrigerants since These react with ozone layer These react with plants and cause greenhouse effect These react with water vapour and cause acid rain These react with oxygen and cause its depletion These react with ozone layer These react with plants and cause greenhouse effect These react with water vapour and cause acid rain These react with oxygen and cause its depletion ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning A vapour absorption refrigeration system Gives noisy operation Requires little power consumption Cools below 0°C Gives quiet operation Gives noisy operation Requires little power consumption Cools below 0°C Gives quiet operation ANSWER DOWNLOAD EXAMIANS APP
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