Refrigeration and Air Conditioning A vapour absorption refrigeration system Gives noisy operation Cools below 0°C Requires little power consumption Gives quiet operation Gives noisy operation Cools below 0°C Requires little power consumption Gives quiet operation ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The superheating in a refrigeration cycle Decreases C.O.P. Increases C.O.P. None of these Does not alter C.O.P. Decreases C.O.P. Increases C.O.P. None of these Does not alter C.O.P. ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The reduced ambient air cooling system has One cooling turbine and two heat exchangers One cooling turbine and one heat exchanger Two cooling turbines and two heat exchangers Two cooling turbines and one heat exchanger One cooling turbine and two heat exchangers One cooling turbine and one heat exchanger Two cooling turbines and two heat exchangers Two cooling turbines and one heat exchanger ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The ratio of the actual mass of water vapour in a unit mass of dry air to the mass of water vapour in the same mass of dry air when it is saturated at the same temperature and pressure, is called Absolute humidity Degree of saturation Relative humidity Humidity ratio Absolute humidity Degree of saturation Relative humidity Humidity ratio ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning In vapour compression cycle using NH₃ as refrigerant, initial charge is filled at High pressure side close to receiver Suction of compressor Low pressure side near receiver Delivery of compressor High pressure side close to receiver Suction of compressor Low pressure side near receiver Delivery of compressor ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning Environmental protection agencies advice against the use of chlorofluorocarbon refrigerants since These react with oxygen and cause its depletion These react with water vapour and cause acid rain These react with plants and cause greenhouse effect These react with ozone layer These react with oxygen and cause its depletion These react with water vapour and cause acid rain These react with plants and cause greenhouse effect These react with ozone layer ANSWER DOWNLOAD EXAMIANS APP
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