Q1. A 3-phase, 50 Hz, 110 KV, overhead transmission line consists of three solid conductors of 3 cm diameter positioned on the corners of triangle with sides of 2 m, 2.5 m, 3.125 m. If the conductor of each phase of this line is replaced by three- strand bundle conductor has the same equivalent area of one solid conductor, and the space between the strands of bundle is 0.2 m. Find the inductance for two conditions. Assume the internal magnetic flux of conductor is neglected and the line is transposed.