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Ah yes, the NCEES practice exam and A.S. Graffeo practice exam use a solution of converting the p.u. impedances of the 2 parallel transformers to the KVA base of the higher-VA-rated transformer, and then does something along the lines of: (Load 1/Load 2) = (Z2 pu/Z1 pu) I do remember seeing...

There's nothing wrong with wanting to reschedule your exam because you still don't feel ready for it. There were previous posters who also contemplated rescheduling, and we encouraged them to do so since it would be much better to take this exam feeling at least 85% to 90% prepared as opposed to...

I also attached a few more parallel transformers equations I learned from Complex Imaginary, Electrical PE Review, and A.S. Graffeo.

Attached are the formulas that I learned from Zach Stone's Electrical PE Review and use for parallel transformer problems where the 2 transformers have the same turns ratios and connection types (but not necessarily same VA rating or per unit impedance). Basically, you need to first determine...

I believe the idea is that the general circuit diagram of an induction motor is equivalent or very similar to a transformer. So if the stator (primary) voltage is reduced, then the rotor (secondary) voltage is also reduced. Torque is proportional to power (Tm = 9.549 * Pout / n). To maintain...

I learned these fault circuit diagrams from Zach Stone's Electrical PE Review course. The way he taught is made it quite easy for me to remember and draw out the circuit analysis diagrams for each type of fault. If anyone has any questions or thinks you see something wrong with these diagrams...

Congrats!

Hi all, So I am a bit of a newb here, even though I just passed the PE exam (and that was only recent too). What exactly is the NCEES record for? Is it required for anything specific (in NY state, at least)? When I did my application for the PE exam, I just put my work experience details on...

Hi guys, I currently have a student educational version of AutoCAD 2020, which I'm trying to use to practice and improve my CAD skills. Unfortunately, my MEP tool palette is not as extensive as I remember in the AutoCAD MEP 2018 version (also a student educational version), which has now...

I should also add that someone else started a similar thread, with some understandable concerns about money cost. I shared some of my more economic/cheaper resources I used in that topic...

Zach, you're informative as always. IMO, the most helpful video from you about autotransformers is the one that shows how to create an autotransformer from a standard transformer: Also, one thing I haven't really seen much in many of the practice exams and materials is autotransformers with...

I understand what you are saying about wanting to better understand the illumination equations and concepts. Keep in mind though that lighting is a relatively small portion of the exam specifications

Myself speaking, I have been a bit confused by some of the lighting formulas in the reference handbook. So I just usually stick with: Luminous flux (lm) = (E * A) / (CU * MF) = (E * A) / (CU * BF * LLF) E: illuminance (lumens over unit area) A: area CU: coefficient of utilization MF = BF *...

I still highly recommend you keep the Graffeo book you have, at least for the practice exam at the end of the book. The exam has some decent questions. (It is true though, that the reference material chapters are rather outdated at this point.)

One more (cheap in price but highly recommended) practice exam I forgot to mention: the NCEES PE Power practice exam. It costs about $40. I think you need to create an NCEES account to order this exam (someone can correct me if I'm wrong). This is highly recommended, so you can get an idea of...

Absolutely go back to your textbooks for reference if you are only beginning studying. Some of the most top recommended textbooks are: Power System Analysis and Design, by Glover, Sarma, and Overbye...

I'm re-reading your first post, and I just want to make sure (with all due respect) - you do know that you need at least a few years of work experience to even qualify to take the PE Exam, right? During the paperwork application for the PE exam, you will have to fill out relevant work experience...

What is your budget for which you are willing to spend up to, for prepping up? I'm reviewing pricing for some of the materials that I used. Aside from Zach Stone's Electrical PE Review course which is $300 per month, and aside from A.S. Graffeo since you already have it, here are some of the...

The A.S. Graffeo reference book is a bit outdated at this point, but I myself would still sort of recommend the exam included at the end of the Graffeo reference book for beginners' practice. I should mention that currently I am seeing it listed as $108 on Amazon, since you did raise your...

Then at the very least I recommend just doing 1 or 2 months of Zach Stone's Electrical PE Review premium online review course. For me, it took me 2 months to cover his entire premium online review course. Also do his practice review exam (in addition to the NCEES PE power practice exam). His...