Refrigeration and Air Conditioning Hydrogen is used in Electrolux refrigeration system so as to _________ the rate of evaporation of the liquid ammonia passing through the evaporator. None of these Increase Reduce Equalize None of these Increase Reduce Equalize ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The curved lines on a psychrometric chart indicates Dew point temperature Relative humidity Dry bulb temperature Wet bulb temperature Dew point temperature Relative humidity Dry bulb temperature Wet bulb temperature ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning A refrigerating system operating on reversed Brayton refrigeration cycle is used for maintaining 250 K. If the temperature at the end of constant pressure cooling is 300 K and rise in the temperature of air in the refrigerator is 50 K, then the net work of compression will be (assume air as working substance with Cp = 1 kJ/kg) 25 kJ/kg 125 kJ/kg 100 kJ/kg 50 kJ/kg 25 kJ/kg 125 kJ/kg 100 kJ/kg 50 kJ/kg ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The evolution of heat of solution takes place in ammonia absorption plant when Weak solution mixes with strong solution Ammonia vapour is driven out of solution Lithium bromide mixes with ammonia Ammonia vapour goes into solution Weak solution mixes with strong solution Ammonia vapour is driven out of solution Lithium bromide mixes with ammonia Ammonia vapour goes into solution ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The refrigerant supplied to a compressor must be Dry saturated liquid refrigerant None of these Superheated vapour refrigerant A mixture of liquid and vapour refrigerant Dry saturated liquid refrigerant None of these Superheated vapour refrigerant A mixture of liquid and vapour refrigerant ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning For proper refrigeration in a cabinet, if the temperature and vapour pressure difference between cabinet and atmosphere is high, then Bigger cabinet should be used Smaller cabinet should be used Perfectly tight vapour seal should be used Refrigerant with lower evaporation temperature should be used Bigger cabinet should be used Smaller cabinet should be used Perfectly tight vapour seal should be used Refrigerant with lower evaporation temperature should be used ANSWER DOWNLOAD EXAMIANS APP
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