Refrigeration and Air Conditioning A certain refrigerating system has a normal operating suction pressure of 10 kg/cm gauge and condensing pressure of about 67 kg/cm. The refrigerant used is Freon Ammonia Brine Carbon dioxide Freon Ammonia Brine Carbon dioxide ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning During heating and humidification, the final relative humidity of air Is lower than that of the entering air Can be lower or higher than that of the entering air Is higher than that of the entering air None of the listed here Is lower than that of the entering air Can be lower or higher than that of the entering air Is higher than that of the entering air None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The C.O.P. of a heat pump working on a reversed Carnot cycle is T₂/(T₂ - T₁) T₁/(T₂ - T₁) (T₁ - T₂)/T₁ (T₂ - T₁)/T₁ T₂/(T₂ - T₁) T₁/(T₂ - T₁) (T₁ - T₂)/T₁ (T₂ - T₁)/T₁ ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The vapour compression refrigerator employs the following cycle Reversed Rankine Reversed Carnot Carnot Rankine Reversed Rankine Reversed Carnot Carnot Rankine ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The operating pressure for refrigerating units using R-12 as a refrigerant is 15 bar 30 bar 8 bar 2 bar 15 bar 30 bar 8 bar 2 bar ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning Mass flow ratio of NH₃ in comparison to Freon-12 for same refrigeration load and same temperature limits is of the order of 1: 1 1: 9 9: 1 1: 3 1: 1 1: 9 9: 1 1: 3 ANSWER DOWNLOAD EXAMIANS APP
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