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Homework Help: Transformer efficiency

  1. Feb 18, 2015 #1
    1. The problem statement, all variables and given/known data
    Transformer efficiency loss

    2. Relevant equations
    Larger transformers are more efficient than smaller

    3. The attempt at a solution
    I understand the basics of energy loss through heat etc but i don't understand why it would be different for the sizes of transformers. Is it to do with hysteresis and eddy currents? If so how do they have an effect?
  2. jcsd
  3. Feb 18, 2015 #2


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    Education Advisor
    Gold Member

    Can you give a more complete description of the question to be answered?

    Can you think of something a small transformer has relatively more of than a large transformer? Hint: Cube-square ratio.
  4. Feb 19, 2015 #3


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    Homework Helper

    Why would the transfromer need to be larger?
    What would it physically involve if it is scaled up?
    How does a transformer operate?
    How would this mechanism be affected by scaling it up?
    Can you suggest any involved equations?
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