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I understand that 3 phase faults are balanced faults and that when analyzing you can reduce to single phase. One NCEES 132 we use the equivalent impedance and the phase voltage to find the 3 phase fault current. On NCEES 513 and 530 we are asked for 3 phase short circuit current and use per unit...

I came across this question in a practice test and don't understand the concept, nor do I have the actual solution, just the answer. What is the equivalent system impedance for a 3-phase fault at the high voltage bus of a 15/7.2kV transformer. The following information about the fault is given...

Just wondering if anyone can clear up some stuff about paralleling transformers. I was working on Complex Imaginary Exam 1 Question 62. The question gives you a total load current and the impedances of 2 paralleled transformers and then asks to solve for one of the transformers contribution to...

I haven't been using this to study but just did a "look inside" on Amazon and it seems to be pretty comprehensive. To those that have this book, do you use it a lot? I know it is not that expensive I just don't want to overload myself with a lot of the same information in a bunch of different...

I will be attending this prep class and just curious if anyone else signed up. The class starts tomorrow night.