Hi
@BebeshKing, the problem is essentially asking for the amount of fault power that originates from the generator that makes it through the transformer all the way to the fault bus. Transformers are known as "current limiting devices" because during fault conditions there is only so much current (or fault power) that they will "let through" to the other side, even if the transformer is being fed from an infinite bus.
Because the transformer is in series with the generator, you'll have to take both into consideration when solving this question.
