1. Refer again to Problem 3.8. Let us now assume that theimpedance of the 138 kV source is not negligible and that it hasthe same X/R ration as the transformer itself. Let us further statethat a symmetrical fault on the 138 kV bus would develop a faultcurrent of 18 kA rms.Determine the frequency and relative magnitude of the transientrecovery voltage of the circuit breaker when it interrupts thefault described in Problem 3.2.Assume that the stray capacitance on the source side of the breakeris 12000 pF.
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