Refrigeration and Air Conditioning Formation of frost on evaporator in refrigerator Is immaterial Results in loss of heat due to poor heat transfer Can be avoided by proper design Increases heat transfer rate Is immaterial Results in loss of heat due to poor heat transfer Can be avoided by proper design Increases heat transfer rate ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning Critical temperature is the temperature above which A gas will immediately liquefy A gas will never liquefy Water will never evaporate Water will evaporate A gas will immediately liquefy A gas will never liquefy Water will never evaporate Water will evaporate ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning Accumulators should have adequate volume to store refrigerant charge at least 0.5 0.25 0.75 0.1 0.5 0.25 0.75 0.1 ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning In mechanical refrigeration system, the refrigerant has the maximum temperature Between condenser and evaporator Before expansion valve In evaporator Between compressor and condenser Between condenser and evaporator Before expansion valve In evaporator Between compressor and condenser ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning In case of sensible heating of air, the coil efficiency is given by (where B.P.F. = Bypass factor) 1 - B. P.F. 1 + B.P.F. P.F. - 1 1/ B.P.F. 1 - B. P.F. 1 + B.P.F. P.F. - 1 1/ B.P.F. ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The operating temperature of a cold storage is -2°C. The heat leakage from the surrounding is 30 kW for the ambient temperature of 40°C. The actual C.O.P. of refrigeration plant used is one fourth that of ideal plant working between the same temperatures. The power required to drive the plant is 7.44 kW 1.86 kW 18.6 kW 3.72 kW 7.44 kW 1.86 kW 18.6 kW 3.72 kW ANSWER DOWNLOAD EXAMIANS APP
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