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 On the pressure-enthalpy diagram, condensation and desuperheating is represented by a horizontal line because the process Takes place at constant entropy Involves no change in volume Takes place at constant temperature Takes place at constant pressure Takes place at constant entropy Involves no change in volume Takes place at constant temperature Takes place at constant pressure ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The bank of tubes at the back of domestic refrigerator is Condenser tubes Capillary tubes Refrigerant cooling tubes Evaporator tubes Condenser tubes Capillary tubes Refrigerant cooling tubes Evaporator tubes ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The C.O.P. of a refrigerator working on a reversed Carnot cycle is (where T₁ = Lowest absolute temperature, and T₂ = Highest absolute temperature) (T₁ - T₂)/T₁ T₁ / (T₂ - T₁) T₂/ (T₂ - T₁) (T₂ - T₁)/T₁ (T₁ - T₂)/T₁ T₁ / (T₂ - T₁) T₂/ (T₂ - T₁) (T₂ - T₁)/T₁ ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning During sensible cooling, Partial pressure of vapour remains constant Specific humidity increases Relative humidity remains constant Wet bulb temperature increases Partial pressure of vapour remains constant Specific humidity increases Relative humidity remains constant Wet bulb temperature increases ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning Efficiency of a Carnot engine is given as 80%. If the cycle direction be reversed, what will be the value of C.O.P. of reversed Carnot Cycle? 0.5 0.8 0.25 1.25 0.5 0.8 0.25 1.25 ANSWER DOWNLOAD EXAMIANS APP
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