Given the three-phase A-Y circuit in Figure 4 with loading resistors R = RB = Rc = 1200 2, a three-phase source with Van = 6020 Vrms. The A-Y transformer consists of three individual transformers wired as in Figure 2. Each individual transformer has a winding ratio of r = 1. Notice that the neutral of the source is connected to the neutral of the load. Because the circuit is balanced, all neutral currents will be zero. Do the following: 1. Draw the per-phase circuit with the load reflected to the primary (source) side of the transformer. Assume the individual transformers are ideal. 2. Calculate Vab, VAB, Ia, and I. Verify that the voltages and currents obey the ratios in equations (2a) and (2b) with r = 1. Note that | In| = 0 and |IN| = 0 because the circuit is balanced. Source Van Vpn In Ic A-Y Transformer Fig. 2 Load A R IN B