1. An unbalanced star-connected load is connected to a 3-phase, 4-wire, 380V, 50HZ, 3phase supply system as shown in Figure 1, calculate: (a) Phase voltage; (b) Line currents; (c) Neutral current L, LI ZLI= 50L30° 2 ZLI 380 V Z12 = 20255° 2 IN Z13 = 402-90°2 N o 12 L2 43 L3 Figure 1
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