Search results

Professional Engineer & PE Exam Forum

Help Support Professional Engineer & PE Exam Forum:

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.
  1. Ampera18 PE

    NCEES RESULTS ARE OUT! POST YOUR RESULTS!

    CONGRATS!!!
  2. Ampera18 PE

    PE Power New CBT Exam

    GOOD LUCK!!!
  3. Ampera18 PE

    PE Power New CBT Exam

    I can't imagine you didn't. You seem much more prepared for it than I was when i stepped into it.
  4. Ampera18 PE

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

    yes i believe one should just use magnitude in the impedance and angle in the current
  5. Ampera18 PE

    Symmetrical Components Question

    yes I think VB and VC are switched. Also I'm using Electrical PE Review notation where Vp = V fault The confusion lies in that Vpos = Vp - (Ipos * Zpos), not Ipos*Zpos And Vp = Ipos* (Zpos+ Zneg + Z0) So, distribute: Ipos* Zpos + Ipos * Zneg + Ipos * Z0 - Ipos*Zpos = Ipos *Zneg + Ipos *Z0 =...
  6. Ampera18 PE

    Synchronous machines ideal excitation: percent tolerance between Re(Ea) and |Vt|

    I don't know the answer, but it will not be this wishy-washy on the exam itself.
  7. Ampera18 PE

    NCEES RESULTS ARE OUT! POST YOUR RESULTS!

    thank you omg
  8. Ampera18 PE

    NCEES RESULTS ARE OUT! POST YOUR RESULTS!

    @Sparky Bill, PE Thank you, i'm crying!
  9. Ampera18 PE

    NCEES RESULTS ARE OUT! POST YOUR RESULTS!

    I passed!! I'm so happy and thankful!! Thanks to this forum, the discord, the subreddit, @Zach Stone, P.E.'s courses/videos and Eng Pro Guides sample exams. And also thanks to my coworkers/friends, but they're not virtual so they'll get real thank you cards. .
  10. Ampera18 PE

    Fuses, circuit breakers, and protective relays: switching, sensing, and interrupting devices

    IDK is the melting of the fuse considered sensing? idk about that one protective relays are tripping devices. they trip contacts and breakers. If you just have a Normal MV VFI, with no relay, it won't trip because it has no brains.
  11. Ampera18 PE

    Fuses, circuit breakers, and protective relays: switching, sensing, and interrupting devices

    I think not everything that has a time delay is a sensing device, which is why circuit breakers are not.  I also would also like to add to the conversation that circuit breakers, while switching devices, really are not meant to be switches, and they have a certain numbers of switching in their...
  12. Ampera18 PE

    Autotransformer question

    I think I get it now. you use the current for the 480V side, because that's what's changing? so current for 480 (I old) * 600 (Vnew) If it was 360/120 it's a 33.750 KVA transformer, right?
  13. Ampera18 PE

    Voltage Regulation of Transformer

    is that all that says? It says "following results obtained" and then, no results?
  14. Ampera18 PE

    Autotransformer question

    I'm so sorry you spent so long drawing it out for silly ol' me.  On the power, why is it just 600 * 93.75, but not 375-93.75? I thought, because it's a step up, the currents have to subtract. >_< this is over my head lmao 
  15. Ampera18 PE

    Autotransformer question

    Yes that's what it boils down to. I definitely didn't spend more than 10 minutes imagining actual potential differences -- nope!
  16. Ampera18 PE

    How to find line current of the generator?

    What was the Line Current answer?
  17. Ampera18 PE

    Autotransformer question

    "the common winding current will be adding with the primary current (step down) or subtracting from the primary current (step up) to get the secondary autotransformer current." I hope that's correct, because that's easy for me to think about. "But Example 11.2 in Wildi is where I start to not...
  18. Ampera18 PE

    Autotransformer question

    :(  i think i get it, but it might just be a "practice until comfortable" type of thing. Maybe I will never instinctually know what the common winding is.
  19. Ampera18 PE

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

    i think it should use complex current. this problem is bad.
  20. Ampera18 PE

    How to find line current of the generator?

    I got 6943A.
Back
Top