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# Zach Stone, P.E.

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Zach Stone, P.E. had the most liked content!

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## 5 Followers

• Rank
Lead Instructor for Electrical PE Review (.com)

## Previous Fields

• Engineering Field
Electrical Power, Industrial Controls, Field Troubleshooting, Construction Management, Turbo Generators and Power Generation, 24hr Production Facilities
PE
• Calculator
TI
• Discipline
Electrical

## Contact Methods

• Website URL
http://www.electricalpereview.com

## Profile Information

• Gender
Male
• Location
USA
• Interests
Teaching Electrical Engineering

## Recent Profile Visitors

5,518 profile views

1. ## April/October 2020 Power PE Exam Prep

Keep your head up everyone! Don't forget to take a break when you need to. I highly recommend taking advantage of the extra month or two you have before your CBT exam date compared to the October exam date to deep dive on areas you are most uncomfortable with.
2. ## 2020/2021 Power CBT Exam Thread

FYI for anyone that hasn't already seen it: First Impressions of the New NCEES® Electrical Power Reference Handbook for the Computer Based Testing (CBT) Exam.
3. ## NCEES PE electrical and Computer practice exam 512

I'm assuming this is the NCEES practice problem where there are two conductors run in parallel because this question comes up often. What is the equivalent resistance of two identical resistors in parallel? if: R1 = R2 = R Then: Req = R//R Req = (R*R)/(R+R) Req = (R*R)/(2R) Req = R/2 The value is halved. The same happens with conductors run in parallel. Each of the NCEES practice exam problems have been discussed to great length on engineer boards with multiple threads. You can find them easily by using the search function instead of making a new threa
4. ## NCEES PE Power Prep Exam Problem 515

The problem is not asking for the output voltage of the half wave rectifier. It's asking for the reverse minimum voltage rating of the diode. The voltage rating of the diode is how much voltage it can be subjected to without failing or becoming damaged. You have to calculate what the maximum voltage is across the diode during the entire period of the input AC voltage signal (from zero to +Vpeak, back to zero, to -Vpeak, and back to zero). In order to use a diode in this circuit, the diode will have to be rated for a "minimum" of this value, meaning as long as the voltage rating
5. ## Voltage Drop percentage - percentage of sending/source voltage (Shorebrook Question 49)

The NEC handbook edition gives some good examples using the magnitude approximation method only (by subtracting magnitudes instead of complex numbers).
6. ## Voltage Drop percentage - percentage of sending/source voltage (Shorebrook Question 49)

This is incorrect. Voltage drop percent by definition in the ratio of the amount dropped across the conductor to the amount supplied by the source.
7. ## EB Mafia

I would love to. Unfortunately, we are currently in the middle of this semester's live class program while trying to incorporate a lot of changes for the new CBT version of the power PE exam has me really putting in the hours. I've never played before, I'd be happy to take a rain check for anytime after the (now cancelled) Oct 23rd PE exam
8. ## Battery reference material

Not a bad book at all for the price but it is not as in depth as the Linden handbook.
9. ## EB Mafia

Never played before, but sounds fun!
10. ## EB Mafia

Wow this is a big thread 😮
11. ## Just got an NCEES email saying October PE exams are canceled.

Yes, I contacted NCEES per @Tim @ NCEES's instructions. They said they are working on revising issues.
12. ## 2-wattmeter load power factor angle

If you're looking for a breakdown of the phasor diagram relationships these two videos sort it out:
13. ## Just got an NCEES email saying October PE exams are canceled.

Thanks Tim, will do.
14. ## Just got an NCEES email saying October PE exams are canceled.

Hi @Tim @ NCEES, I've found a few mistakes in the new NCEES® Power PE Reference Manual for the CBT exam. One of them is a formula mistake with the variable in the wrong place that will result in a wrong answer for anyone that uses it. Who can I can notify at NCEES to help bring this to the right persons attention?

Good catch.
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