For a conceptual single-phase phase-shifting transformer, the primary voltage leads the secondary voltage by \(30^{\circ}\). A load connected to the secondary winding absorbs \(110 \mathrm{kVA}\) at an 0.8 power factor leading and at a voltage \(E_{2}=277 / 0^{\circ}\) volts. Determine

(a) the primary voltage,

(b) primary and secondary currents,

(c) load impedance referred to the primary winding, and

(d) complex power supplied to the primary winding.