Refrigeration and Air Conditioning Which of the following refrigerants has lowest freezing point? Freon-12 CO2 Freon-22 NH3 Freon-12 CO2 Freon-22 NH3 ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The C.O.P. of a refrigeration cycle with lowering of condenser temperature, keeping the evaporator temperature constant, will Remain unaffected Decrease Increase May increase or decrease depending on the type of refrigerant used Remain unaffected Decrease Increase May increase or decrease depending on the type of refrigerant used ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning In a vapour compression cycle, the refrigerant immediately after expansion valve is Liquid Wet vapour Sub-cooled liquid Saturated liquid Liquid Wet vapour Sub-cooled liquid Saturated liquid ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The atmospheric air at dry bulb temperature of 15°C enters a heating coil maintained at 40°C. The air leaves the heating coil at 25°C. The bypass factor of the heating coil is 0.4 0.376 0.6 0.67 0.4 0.376 0.6 0.67 ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning For unsaturated air, the dew point temperature is __________ wet bulb temperature. Equal to Less than None of these More than Equal to Less than None of these More than 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 oxygen and cause its depletion These react with plants and cause greenhouse effect These react with ozone layer These react with water vapour and cause acid rain These react with oxygen and cause its depletion These react with plants and cause greenhouse effect These react with ozone layer ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS