A 500-kV, 60-Hz, 3-phase completely transposed overhead line has the resistance R = 0.0201/km, Ds = 0.0745m, r = 0.08m and length 180 km. The line has flat horizontal phase spacing with 5m between adjacent conductors. The line delivers 1600 MW to the receiving-end at 475 kV and 0.95 power factor leading at full load. Calculate a) the exact ABCD parameters of the line, [3 marks]b) the sending-end voltage and current, [3 marks]c) the sending-end real power, power factor and complex power, [2 marks]d) the full-load line losses and efficiency, and [1 mark]e) the percent voltage regulation. [1 mark]