Three similar 2-kVA, 50 Hz, 6.35kV: 240V, single-phase transformers are connected in turn in wye-wye, delta-wye, wye-delta, delta-delta. The transformers are considered to be ideal.
Determine the rated values of primary and secondary line-to-line voltages, the rated primary and secondary line currents, the ratio of line-to-line voltages, and the ratio of line currents for each of the transformer connections.