The primary and secondary winding of a three-phase transformer are delta- and wye-connected, respectively. The rated power is 75 kVA and the rated primary voltage is 12 kV (line-to-line). If each phase has N1/N2 ˆ 92, calculate:
(a) the secondary rated voltage (both phase and phase-to-phase);
(b) the primary rated current (both line and phase);
(c) the secondary rated current (both line and phase).