Question In a balanced Y-A connected system the source voltage is given as Van = 220/-15° (rms) and the load (per phase) consumes complex power S = 5.0+; 1.4 kVA. Find a) load impedance b) line currents (load side) c) power factor

Concepts we should know to solve it:- In the star-connect connection , Phase current = line current while Line voltage = sqrt3 Phase voltage . In the delta-connect connection , Phase voltage = line voltage while Line current = sqrt3 phase voltage . ApparentPower =sqrt((" Activepower ")^(2)+(" Reactivepower ")^(2)) ApparentPower =∣ ComplexPower Power fact =(" ActivePower ")/(" ApparentPower ") Solution :- The load side complex power is given, we should be able to calculate Load side Active power and apparent power from it. S=5.0+1.4 jKVA ActivePower =5000W ApparentPower =sqrt({:(5.0)^(2)+(1.4)^(2)))=5.19KVA=5190VA LOAD-SIDE LINE CURRENT :- LNE voltage is sqrt3 times 68 phase voltage and leods the phose voltag rarr lambda-side.{:[V ... See the full answer