A 5-MVA, 66:13.2 kV, three-phase transformer supplies a three-phase resistive load of 4500 kW at 13.2 kV. What is the load resistance in ohms as measured from line to neutral on the high-voltage side of the transformer, if it is:
(a) Connected in Y-Y?
(b) Reconnected in Y-?, with the same high tension voltage supplied and the same load resistors connected?