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This is for CI 1-57, 2-17, 3-72, 4-70. I know how to work this problem, it is simple division, but I was wondering why. Does anyone have a good reference for it? I could eventually figure it out, but I'd rather keep reviewing practice tests looking for misconceptions I have, and then study...

I'll post the exact question from CI when I get home, but I had a problem with calculating the source impedance of a utility. I found a link with the formula. http://iaeimagazine.org/magazine/2015/07/07/calculating-short-circuit-current/ The link says the source impedance is  %Z Utility...

I'm really struggling with these power electronics questions. Why is the answer not 125 * sqrt(3) * sqrt(2)? The voltage provided is phase voltage and the voltage over the diodes would be line voltage?

The PE Exam Stdu Guide by Jeff Setzer puts a huge emphasis on the International Building Code. He recommends bringing large portions of it to the exam. This is alarming to me because nobody else suggests this. I'm accumulating too many resources as it is in my opinion and now this guy says I...