How much power can an open delta transformer deliver? How much power can an open delta deliver compared to a standard three phase delta transformer? Where does the power formula for the open delta transformer connection come from? What are the phasor diagrams for an open delta transformer? What about the current and voltages for […]
New 2018 NCEES Practice Exam for the Electrical Power PE Exam
In November 2017 NCEES® released a new edition of their official PE Electrical and Computer: Power practice exam (ISBN: ISBN: 978-1-932613-92-6). In this article we are going to address two main questions: If you already have the older edition, should you still purchase the newer edition released in November 2017? What does the new NCEES® practice exam […]
Per Unit Example – How To, Tips, Tricks, and What to Watch Out for on the Electrical Pe Exam
There is a lot of confusion surrounding the per unit system, and rightfully so. If you’ve never used it before, it is easy to become confused with all of the individual pieces that make the system work. To help clear things up, here is an in-depth break down on an example question that is similar to […]
Qualitative Practice Problem – Power Supplies
Did you know, that the most common feedback about the NCEES Electrical Power PE Exam is that exam takers are often surprised at the high number of qualitative questions that appear on the exam? A qualitative question is a test question designed to test your application of theory to select the most appropriate answer and […]
Avoid These Three Phase Power Formula Mistakes!
I want to share with you the the most common mistakes that students make with three phase power formulas that lead them to getting robbed of correct answers on the PE exam, and remind you why specific notation is so important. My goal of this article is to get you out of the bad habit […]
Electrical PE Exam Qualitative Theory Question of the Week
Following the theme of preparing for qualitative theory and concept questions, which caught many students off guard during the 2016 October Electrical PE Exam, here is another example of how to combine several different formulas to derive a relationship that solves a qualitative question. Sample Question: True or False: The capacitance of a transmission […]