Refrigeration and Air Conditioning In refrigerators, the temperature difference between the evaporating refrigerant and the medium being cooled should be As low as possible (3 to 11°C) Any value Zero High, of the order of 25° As low as possible (3 to 11°C) Any value Zero High, of the order of 25° ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning Which of the following refrigerant has the maximum ozone depletion potential in the stratosphere? Carbon dioxide Ammonia Fluorine Sulphur dioxide Carbon dioxide Ammonia Fluorine Sulphur dioxide ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The operating pressure for refrigerating units using R-12 as a refrigerant is 8 bar 2 bar 15 bar 30 bar 8 bar 2 bar 15 bar 30 bar ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning Wet bulb temperature is the temperature of air recorded by a thermometer, when Its bulb is surrounded by a wet cloth exposed to the air None of these The moisture present in it begins to condense It is not affected by the moisture present in the air Its bulb is surrounded by a wet cloth exposed to the air None of these The moisture present in it begins to condense It is not affected by the moisture present in the air ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning Environmental protection agencies advice against the use of chlorofluorocarbon refrigerants since 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 These react with oxygen and cause its depletion ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning In which of the following refrigeration system, waste heat can be effectively used? Vapour absorption cycle Vapour compression cycle None of the listed here Air refrigeration cycle Vapour absorption cycle Vapour compression cycle None of the listed here Air refrigeration cycle ANSWER DOWNLOAD EXAMIANS APP
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