Refrigeration and Air Conditioning Formation of frost on evaporator in refrigerator Increases heat transfer rate Can be avoided by proper design Is immaterial Results in loss of heat due to poor heat transfer Increases heat transfer rate Can be avoided by proper design Is immaterial Results in loss of heat due to poor heat transfer ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The freezing point of sulphur dioxide is -56.6°C -135.8°C -75.2°C -77.7°C -56.6°C -135.8°C -75.2°C -77.7°C ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning Nusselt number (NN) is given by NN = hl/k NN = μ cp/k NN = V²/t.cp NN = ρ V l /μ NN = hl/k NN = μ cp/k NN = V²/t.cp NN = ρ V l /μ 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 Condensing temperature in a refrigerator is the temperature Of cooling medium At which refrigerant gas becomes liquid Of freezing zone Of evaporator Of cooling medium At which refrigerant gas becomes liquid Of freezing zone Of evaporator ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The bank of tubes at the back of domestic refrigerator is Capillary tubes Condenser tubes Refrigerant cooling tubes Evaporator tubes Capillary tubes Condenser tubes Refrigerant cooling tubes Evaporator tubes ANSWER DOWNLOAD EXAMIANS APP
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