Three single-phase transformers are connected to form a step-down three-phase 11kV to 415 V transformer bank. Each transformer is rated at 20 MVA, 6.35 kV/415V at 60 Hz. The equivalent impedance of each transformer referred to its low voltage side is (20 j50) ??. The HV side of the transformer is connected to a source through an HV feeder of impedance (10 j50) ?/phase. Neglect the LV feeder impedance. The transformer delivers 500 kW at 415 V, 0.80 power factor lagging.(a) What are the connec
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