Irritating Engineering Question

  • MattyC0709

    Posts: 1199

    Sep 04, 2009 7:19 AM GMT
    There should be a catagory for stuff like this xD

    I'm studying for a resit on Saturday next week about electrical power and I was working ot these tutorials I had. Now I have these fault current questions which I think I am working out correctly, but my answer is always coming out incorrect. I'm not sure if the answers given are correct anyway, because the lecturer screwed up many times.

    I've searched many times on the internet about how to work them out, all giving me the same method, and still my answer is wrong.

    Can someone have a look at this and possibly tell me how to work it out? I'm supposed to use the pu method. (ie. reduce to a fault impedance at the point of the fault, and take its reciprocal since E(pu) = 1.0pu)

    faultanalysis.png
  • Posted by a hidden member.
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    Sep 04, 2009 9:34 AM GMT
    Um, maybe you should try realgeek.com

    Its the weekend and I can't be expected to think - plus, EE was like 15 years ago for me!
  • Posted by a hidden member.
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    Sep 04, 2009 9:50 AM GMT
    OMG! icon_eek.gif

    I did something like this in 8th grade lol but not this complexicon_biggrin.gif
  • Posted by a hidden member.
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    Sep 04, 2009 12:26 PM GMT
    Don't look at me. I failed a Post Office job test many years ago because I thought a 'microfarad' was a small Arab.....icon_rolleyes.gificon_wink.gif
  • Posted by a hidden member.
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    Sep 04, 2009 6:08 PM GMT
    This post is to keep the thread alive until the right person comes along.

    Continue.
  • swimbikerun

    Posts: 2835

    Sep 04, 2009 6:12 PM GMT
    chuckystud saidThis post is to keep the thread alive until the right person comes along.

    Continue.
    Hey Sweet Spirit! You...you are the right person for this thread.icon_razz.gif
  • Posted by a hidden member.
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    Sep 04, 2009 6:28 PM GMT
    I have no fucking idea! icon_razz.gif
  • Celticmusl

    Posts: 4330

    Sep 04, 2009 6:45 PM GMT
    In the illustration I see a butterfly holding a dildo, is that what I'm supposed to see? What does it mean?
  • Posted by a hidden member.
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    Sep 04, 2009 6:46 PM GMT
    Mutty saidThere should be a catagory for stuff like this xD

    I'm studying for a resit on Saturday next week about electrical power and I was working ot these tutorials I had. Now I have these fault current questions which I think I am working out correctly, but my answer is always coming out incorrect. I'm not sure if the answers given are correct anyway, because the lecturer screwed up many times.

    I've searched many times on the internet about how to work them out, all giving me the same method, and still my answer is wrong.

    Can someone have a look at this and possibly tell me how to work it out? I'm supposed to use the pu method. (ie. reduce to a fault impedance at the point of the fault, and take its reciprocal since E(pu) = 1.0pu)

    faultanalysis.png


    The answer is correct. Start out on the end of the circuit and calculate back. I made ther assumption that all current flowing through C was defaulted to ground.
  • Posted by a hidden member.
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    Sep 04, 2009 6:49 PM GMT
    Oh, one thing you may be missing. Look at the transformers. This is obviously three phase.
  • mynyun

    Posts: 1346

    Sep 04, 2009 7:36 PM GMT
    Celticmusl saidIn the illustration I see a butterfly holding a dildo, is that what I'm supposed to see? What does it mean?


    Lmao, I think you are looking at the wrong picture. But, hey, if you have the dildo you can hold my butterfly anytime. LoL.
  • Posted by a hidden member.
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    Sep 04, 2009 7:47 PM GMT
    Golly, now that I look at it for a bit, G1 kinda' looks like Gonad 1, and G2 kinda' looks like Gonad 2.
  • Posted by a hidden member.
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    Sep 04, 2009 7:54 PM GMT
    Dude, I'm barely beginning my Engineering degree. I wish I could help. At least now I know who to go to when I take circuit analysis!! icon_eek.gif
  • mynyun

    Posts: 1346

    Sep 04, 2009 7:55 PM GMT
    Looks like a Fallopian tube.
  • MattyC0709

    Posts: 1199

    Sep 07, 2009 3:51 PM GMT
    Hehe, thanks for the help twomack, and the funny jokes guys. I'll try it out again, hopefully I'll manage somehow. :s If only the lecturer showed us how to work it out. Grr.
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    Sep 07, 2009 5:13 PM GMT
    twomack saidOh, one thing you may be missing. Look at the transformers. This is obviously three phase.


    Are you sure? "C" looks to me as a ground not a 3rd hot leg.
  • Posted by a hidden member.
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    Sep 08, 2009 8:52 PM GMT
    kscott6671 said

    Are you sure? "C" looks to me as a ground not a 3rd hot leg.


    Show us your 3rd hot leg!!!icon_twisted.gif