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  1. Sparky Bill PE

    PE Power New CBT Exam

    Yeah that "bring a printed copy" has been on NCEES email for years and years. Now that covid exist I doubt anyone would want to hold a random piece of paper. If you can't pull up your email on your phone, i would bring it. I think the entire purpose is if you show up and they don't have your...
  2. Sparky Bill PE

    help calculating voltage of a battery

    Looking at Zn, I don't know when to use the -.67 or the -1.25 I don't know why it has 2 values.   
  3. Sparky Bill PE

    delete

    delete
  4. Sparky Bill PE

    Complex Imaginary question 31 NEC problem

    I'm very good at "looking at what they are asking" before "looking at what's given" but wow thank you for taking the time to write this. That is a skill I never realized is to after "looking at what is asked" go to the answers to see if any don't make sense, before even solving, JUST IN CASE 3...
  5. Sparky Bill PE

    NCEES exam problem 129. I am now freaking out about voltage drop

    Maybe that's what I'm doing wrong, so when doing voltage drop and using Z eff  you always take the current magnitude, not the complex current?
  6. Sparky Bill PE

    PE Power New CBT Exam

    They are so proud of their scale that they "don't want you to figure out".  I've seen it be such a joke you can't take it seriously at all. On the FE electrical math is the largest question. Say it's 15 questions. I've seen someone get 13 or 14 out of 15 and the "NCEES 15 point scale" Puts...
  7. Sparky Bill PE

    NCEES prob 522

    Thank you, for my calculations I use the J instead of converting to the 90 degrees. Thank you!
  8. Sparky Bill PE

    NCEES prob 522

    Where is the voltage of 90 degrees we are subtracting from? I'm remembering why the other 2 times I studied my ass off and exam got canceled I got frustrated at the white book. I have worked 50 of these problems and never seen a random 90 degree subtraction coming in. Just like the voltage drop...
  9. Sparky Bill PE

    ncees exam 518

    Why do I take the peak voltage before doing my calculation instead of just using my RMS? Is this some battery thing I don't know about where the 60V on the other side is considered a "peak" voltage?  
  10. Sparky Bill PE

    PE Power New CBT Exam

    So when you walked out of the testing center, did you have 2 hours or 1 hour left on the clock? Yeah I told the wifey I think everyone will have tons of time left. When I took the FE multiple times, it was 110 questions and only (I think) 5 hours and 20 minutes, not 8 hours. The PE problems in...
  11. Sparky Bill PE

    NCEES exam problem 129. I am now freaking out about voltage drop

    I agree angle in Z eff is taken care of, in your math there you have I * Z = 5.2. You're not using the angle of your current. Am I not supposed to be using the angle of my current provided by the power factor? My calculation is 400 at the angle of -36.9. 
  12. Sparky Bill PE

    NCEES 506 transformer ratio problem

    Thank you, yes I understand the transformer connection of the delta-why I guess I just wasn't expecting them to call each side the "single phase transformers" and it retain the entire line voltage of the 3 phase system. Just something I forgot could happen I guess.  That or my mind was just...
  13. Sparky Bill PE

    NCEES exam problem 129. I am now freaking out about voltage drop

    Your VD is I * Zeff, why didn't you use the angel with I instead of just its magnitude? 
  14. Sparky Bill PE

    NCEES exam problem 129. I am now freaking out about voltage drop

    I didn't get 471, I'll post my work tomorrow and we can compare to what I'm doing wrong getting a different answer. 
  15. Sparky Bill PE

    NCEES exam problem 129. I am now freaking out about voltage drop

    What is "alternate method"? Is that you calculating Z effective, then multiply that by current? Or is that you NOT finding Z effective and just using resistance/reactance? 
  16. Sparky Bill PE

    NCEES 506 transformer ratio problem

    Yeah I seen single phase transformers, so I took the root3 of both. 
  17. Sparky Bill PE

    NCEES exam problem 129. I am now freaking out about voltage drop

    I have a lot of experience with the FE, and a lot of it was more of "trying to figure out the cute ncees way" of solving things instead of actually solving it like an engineer. I'm hoping I'm wrong on this. Otherwise, I know I'm going to be super pissed as soon as I see a voltage drop question...
  18. Sparky Bill PE

    NCEES 506 transformer ratio problem

    I'm sure it's because I'm tired, but I can't follow the solution of "because the connection, the high side is the phase voltage"......  
  19. Sparky Bill PE

    NCEES exam problem 129. I am now freaking out about voltage drop

    It says "You can use the other formula and get same answer, and I'm not getting same answer. I'm getting like 473.8 (of course just enough to make you chose wrong answer). What am I missing here?  I don't see anywhere in reference handbook, or NEC telling me to use this method of keeping the...
  20. Sparky Bill PE

    PE Power New CBT Exam

    Good luck on your exam, I wish you the best of luck! ❤️ 
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