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Homework Help: Ideal Transformer

  1. Nov 13, 2016 #1
    1. The problem statement, all variables and given/known data
    Ideal Transformer:
    rated: 11000/4600 V
    secondary current: 30A

    Find turn ratio, kVA rating, primary current
    2. Relevant equations

    3. The attempt at a solution
    Are these correct?
    Turn ratio: N=V2/V1 = 0.418
    kVA = S1*I1 = S2*I2 = 4600*30 = 138kVA
    Primary current: V1*I2 = V2*I2=>I1=(4600*30)/(11000) = 12.5A
  2. jcsd
  3. Nov 13, 2016 #2


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