In a three-phase system, two buses abc and a’b’c’ are connected by two parallel lines L1 and L2 with positive-sequence series reactances 1 = 0.25 p and 2 = 0.20 p. The two parallel lines supply a balanced load with a load current of 1.0∠ − 30° p. Determine the real and reactive power supplied to the load bus from each parallel line with (a) no regulating transformer, (b) the voltage-magnituderegulating transformer, placed in series with line L1 at bus a’b’c’, providing a 0.05 per-unit increase in voltage magnitude toward bus a’b’c’, (c) the phase-angle-regulating transformer, placed in series with line L1 at bus a’b’c’, advancing the phase angle by 3° toward bus a’b’c’. Assume that the voltage at bus abc is adjusted so that the voltage at bus a’b’c’ remains constant at 1.0∠0° p. Also assume positive sequence