Three identical single-phase transformers, each rated at 100 kVA, 7 kV/3.5 kV, are connected as a three-phase transformer bank. The high-voltage side of the transformer is connected in delta and the low-voltage side is connected in wye. A 200 kVA, wye-connected load is attached across the secondary winding. Compute the following:
(a) Ratio of the line-to-line voltages
(b) Line current on both sides of the transformer