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Math Help - Transformers help

  1. #1
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    Transformers help

    A transformer has 1000 primary turns and 50 secondary turns, I have calculated the turn ratio to be 1/20 .... is this correct? It also asks if the secondary is loaded with 100A and the primary with 200V (Ac), calculate the primary current and secondary voltage.

    I worked out the secondary voltage to be 40V but not sure how to do the current?
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  2. #2
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    Quote Originally Posted by bobchiba View Post
    A transformer has 1000 primary turns and 50 secondary turns, I have calculated the turn ratio to be 1/20 .... is this correct? It also asks if the secondary is loaded with 100A and the primary with 200V (Ac), calculate the primary current and secondary voltage.

    I worked out the secondary voltage to be 40V but not sure how to do the current?
    Power in = Power out

    So
    V1*I1 = V2*I2

    -Dan
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