A synchronous generator and motor are rated 30,000 kVA, 13

A synchronous generator and motor are rated 30,000 kVA, 13.2 kV, and

both have subtransient reactances of 20%. The line connecting them has a reactance of 10% on the base of the machine ratings. The motor is drawing 20,000 kW at 0.8 p.f. leading and terminal voltage of 12.8 kV when a symmetrical three-phase fault occurs at the motor terminals. Find the (a) subtransient fault current (b) subtransient generator and motor currents, neglecting pre-fault current and (c) subtransient generator and motor currents including prefault current