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How the efficiency of transformer affects turn ratio

  1. Jun 4, 2012 #1
    A secondary text book said that if there is no flux leakage,
    Vp/Vs=Np/Ns, no matter what is the efficiency of the transformer. May I know will the ohmic loss and eddy current contribute to the loss and modify the voltage ratio? thanks!
  2. jcsd
  3. Jun 8, 2012 #2
    That secondary book says , that power in equals power out in a transformer, so ,

    Vp/Vs = Is/Ip = Np/Ns , only when the transformer is an ideal machine.

    Ohmic loss is contributed due to eddy currents and magnetic hysteresis and in that case there will be flux leakage. So this will lead to energy loss and will modify the Vp/Vs ratio.
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