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Power correction capacitors and capacitive loads deliver reactive power Q. Typically a load absorbs power, so it has a positive sign in front of the power value (whether it is in VA, W, or VAR). But when a load delivers power instead, it should have a negative sign. This is part of typical...

Congrats, Strawhat!

You mean the other formulas you posted earlier from Engineering Pro Guides? IMO, I think you use these formulas for when you have the total load KVA being supplied by both transformers, the rated KVA of each transformer, and the p.u. impedance of each transformer. This is when you are trying to...

When it comes to problems with 2 parallel transformers, I like to use Zach Stone's limiting transformers method from Electrical PE Review. I included my work for this problem based on Zach's limiting transformers method. The limiting transformer is the transformer that is loaded to its rated...

Typically, 3-phase voltage values are given as line-to-line voltages and 3-phase current values are given as line currents. If you are given 3-phase voltage/current/power values and they don't specify whether it's line-to-line or line-to-neutral values, you need to assume that: the voltages...

Attached is my solution for this problem (this was previously question number 524 on the pre-updated NCEES practice exam). For transformers, the power loss equation is: P total loss = P no load loss + P copper loss P copper loss = (n * I)^2 * R = n^2 * I^2 * R P copper loss at 100% = (1 *...

Normally in a balanced 3-phase system, the neutral conductor carries a sum total of 0 current because of how the phasors work. I<0 + I<-120 + I<+120 = 0 But when there are zero-sequence harmonic currents, they add up in the neutral connection point and thus add up in the neutral conductor...

To add on to what DuranDuran said above, attached is an illustration of the typical per-phase circuit analysis diagram for a synchronous motor. The armature resistance Ra is usually much smaller than the synchronous reactance Xs, and here it's stated that resistance Ra is negligible...

Also a friendly reminder: As part of the NDA (non-disclosure agreement), please do not discuss any exam problems you came across during the actual exam. We here at this forum would not want anyone to have their results cancelled because they broke the NDA agreement.

I'll try to explain this as best as I can with what I remember Zach Stone's Electrical PE Review course taught about 2-wattmeter method. In a 2-wattmeter method, the two wattmeters are ALWAYS connected such that: They share the same common negative terminal connection point. Here, the common...

Good luck! As Dothracki mentioned above: 1. Focus on the easy questions. Skip the code questions and hard questions on your first pass. 2. Do the code questions. Skip any questions that are hard. 3. Try to figure out the harder questions as best as you can. Take the time to double-check your...

Any specific topics that you are struggling on?

As a friendly FYI, I noticed an email that @Zach Stone P.E. now has a random practice exam generator on his Electrical PE Review website. This random exam generator generates various quantities (5, 10, 15, 20, 25, 40) of random questions from his bank of over 400 problems.

Not really full additional exams, but it's more like a set (or 2 sets) of CBT-style questions which I believe are part of his live course package that you would have to pay for. He does have a 1-month free trial.

I just noticed your first post mentioned you only have 2-3 weeks left before your actual exam time. At this point from your post, I would highly focus more on Electrical PE Review practice exams with the amount of time you have left. It is great at covering exam-prep material, and Zach Stone...

Do you have access to Zach Stone's Electrical PE Review course? He has several sets of practice questions, such as a full 80-question practice exam set and several sets of questions that are CBT style. Cram for PE Power Exam Set 4 is also designed to be similar to the CBT style. We are not...

I know that Engineering Pro Guides has a practice exam set specifically for code questions. It's not the Final Exam or Full Exam but is the References Exam. You can get that if you don't have it yet. It has NEC questions that cover various topics beyond the typical questions from NEC sections...

I remember one of the PPI practice exam problems also had a similar question where the motor was not clearly stated to be continuous-duty, but the solution still used the 125% multiplier from NEC 430.22 for sizing conductors.

Congrats on passing! I have heard a little bit about School of PE, but not enough to comment on it. Many of us on this forum used Zach Stone's Electrical PE Review.

Yes. NCEES released an errata clarifying and correcting this (and I think 3 other problems). Zero-sequence phasors have the same magnitude and same phase angle. There is no angular displacement between the zero-sequence phasors. Positive-sequence phasors have the same magnitude, but 120-degree...