Transformer

Discussion in 'Homework Help' started by Petrucciowns, Jun 20, 2009.

  1. Petrucciowns

    Thread Starter Active Member

    Jun 14, 2009
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    http://i40.tinypic.com/293ufj9.jpg

    Again I am making notes of my past homework assignment and am stuck on two of the questions. So can anyone help me figure out how to find PPR1 and IPR1? I have the answers, I just need to know how to find them out.

    Thanks!:)
     
    Last edited: Jun 20, 2009
  2. mik3

    Senior Member

    Feb 4, 2008
    4,846
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    Find the total power and current in the secondary and then divide them by the turns ratio to find them in the primary.
     
  3. Petrucciowns

    Thread Starter Active Member

    Jun 14, 2009
    62
    0
    After spending 20 minutes trying to figure out answers based on your information I realized you were wrong. Instead it is found this way:


    PPR1 = The sum of the power in both the secondary and primary sections.
    IPRL= PPR1 / voltage across primary.

    Thanks for trying though.
     
  4. mik3

    Senior Member

    Feb 4, 2008
    4,846
    63
    For the primary current I am right (it is one way to find it).

    For the primary power I got confused. In a lossless transformer the primary power equals the secondary power.
     
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