Equipment ratings for the five bus power system shown in Fig.3 are as follows: Generator G1: 50MVA, 12 kV, X" = 0.2 pu Generator G2: 100MVA, 15 kV, X" -0.2 pu Transformer T1: 50MVA, 12 kV Y/ 138kV Y, X = 0.1pu Transformer T2: 100MVA, 15 kV A/ 138kV Y, X = 0.1pu Each 138kV line, X = 402 A three-phase short circuit occurs at bus 5, where the pre-fault voltage is 15kV. Pre-fault load current is neglected. i) Draw the positive sequence reactance diagram in per unit on a 100MVA, 15kV base in the region of generator 2 ii) Determine the Thevenin's equivalent at the fault. iii) Determine the sub-transient fault current in per unit and in KA G1 YT1Y 2 8. 10 T2 cele Fig 3 3 (8, 3.5)