[B] The following data were obtained from testing a 48-kVA, 4800/240-V. single phase transformer: 120 W Open-circuit test: 240 V 2 A 600 W Short-circuit test: 150 V 10 A Determine (1) the equivalent circuit of the transformer as viewed from the high voltage side and (2) the voltage regulation when the transformer operating at maximum efficiency with unity p.f. [7Marks]