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  1. R

    Latching and holding motor circuits

    Are latching and holding motor circuits basically the same? If not, how are they differnt?
  2. R

    test resuts

    hey folks..on the last exam, my results for : transmission & distribution: power system performance was low as was transmission & distribution: system analysis and ideas of what to study exactly for these subjects? im kind lost on what they are telling me here... i did well on...
  3. R

    XFMR ?

    Great, thanks much wildsoldier..... can we assume the 480 V side is delta connected?
  4. R

    XFMR ?

    oops, no / (slash)
  5. R

    XFMR ?

    Thanks fro diagram by the way...i can read it just fine....just not sure why they multiply by 1.732 above when we already have V_ll....and when they give us a voltage of a Xfmr as say, 480, np /, does that essentially mean that side is a delta Xfmr?
  6. R

    XFMR ?

    I think I have a good start on studying for this stuff...I undertsand for Y V_ln = V_ll = V_phase and for delta V_ll = V_phase...the problem this comes from is this question: The Xfmr = 480-120/208 volts.....calculate primary protection and primary conductor size using 75 degree terminals....S...
  7. R

    Xfmr ?

    We have a 45 KVA, 3-phase, 480-120/208 V Xfmr, determine secondary conductors size annd secondary overcurrent device? The solution says:I = VA divided by (208*1.732) = 45kva divided by (208*1.732) = 125 Amps, why do they multiply line to line voltage, by 1.732, shouldnt they divide by 1.732...
  8. R

    XFMR ?

    Im starting to understand I think, thanks for feedback! So, looking at our example, 480-120/280....I now see how we can see secondary is a Wye...but how would we get 240 from 120 to know its a delta arrangement? Not sure hot to calculate it since on a delta Voltage phase to phase = voltage line...
  9. R

    XFMR ?

    Wildsoldier: You are correct thats a wye configuration also from line to ground is 120 How can you tell its a wye configuration? We can model delta configurations as if a neutral exiast also correct?
  10. R

    XFMR ?

    let me try again, looks like i had some typos: if we are given a xfmr with a 480-V-120/208V rating....what does thie mean? Does it mean primary Voltage, line to line - 480 V and secondary voltage, line to line = 208 Volts and secondary voltage, line to neutral = 120? Thanks ahead of time
  11. R

    XFMR ?

    if we are given a xfmr with a 48-V-120/208V rating....what does thie mean? Does it mean primary Voltage, line to line - 480 V and secondary voltage, ;ine to line = 208 Volts and secondary voltage, line to neutral = 120? Thanks ahead of time
  12. R

    complex imaginary exams any good?

    Hello, I have obtained the spinup, ncees power pe practice exams...what about the complex imaginary exams? are they any good? were can i find them?
  13. R

    spin_up first or second edition exams?

    Wael, did the exams help much?
  14. R

    spin_up first or second edition exams?

    Is there any difference between the 1st and 2nd edition spinup exams? Are bother a good set of practice exams?
  15. R

    Kaplan/spinup exams

    does anyone know ere to get these and what the prices are?
  16. R

    Report Score, test taken and pass or fail please

    Ok, trying to get an idea if possible what a passing and/or failing score may be on some of the exams...everyone please list test taken, whether they passed or failed....and score if given... Thanks much and big congrats to those that failed.
  17. R

    Failed/Test/Score

    Please list results and test taken in this thread if faid (im pretty sure they dont give scores to people who passed), so I will have an idea what to expect when I take the exam April 2013. Specifically, did anyone take the mining and mineral processing exam with results?
  18. R

    Post your PE Electical Exam results in here

    I failed Power for and time: Took it 1st April, 2011...scored 49/80 Took it 2nd time, April 2012......took the GaTech Power review course, PPI course and only practice exam I completely reviewed was NCEES....but worked many practice problems from the GaTech review course.....thought I would...
  19. R

    Grounding Rods

    That is the verbage, and adding the total resistance wasnt one of the choices
  20. R

    Grounding Rods

    I cant say I have either and its confusing the heck out of me.....but it is out there....and I am not sure treating as if its parallel is the solution, hoping someone comes along that understand it
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