two identical synchronous machines, each rated 60 mva, 15 kv, with a subtransient reactance of 0.1pu, are connected through a line of reactance 0.1pu on the base of the machine rating. one machine is acting as a synchronous generator, while the other is working as a motor drawing 40mw at 0.8pf leading with a terminal voltage of 14.5kv, when a symmetrical three-phase fault occurs at the motor terminals. determine the subtransient currents in the generator, the motor, and the fault by using the internal voltages of the machines