(4) A generator is connected through a transformer to a symchronous motor. The subtransient reactances of generator and motor are 0.2 p.u. and 0.3 p.u. respectively. The reactance of the transformer is 0.25 p.u. A 3-phase fault occurs at the terminals of the motor when the terminal voltage of the generator is 0.95 p.u. ; The output current of the generator is 0.9 p.u. with 0.95 pf lagging. Find the subtransient current in p.u. at the fault generator and motor using Thevenin's method (use the terminal voltage of generator as reference).