Question

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The following unbalanced line-to-ground voltages are applied to the balanced-Y load

shown in Figure 3.3: Vay = 100/0°, Vbg = 75/180°, and Veg = 50/90° volts. The Y

load has Zx = 3 + j4 2 per phase with neutral impedance Z,, j1 2. (a) Calculate

the line currents la, Ib, and I without using symmetrical components. (b) Calculate

the line currents Ia, Ib, and I, using symmetrical components. Which method is easier?

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