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1. To step 110 V ac down to 20 V ac, the turns ratio must be





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  • By: guest on 01 Jun 2017 11.29 pm
    Vp/Vs = Np/Ns

    Vs = (Ns/Np)Vp

    We required turns ratio i.e., (Ns/Np)

    = Vs/Vp

    = 20/110

    = 0.181818182

    [Note: p - primary; s - secondary]

    For step down transfer, the turns ratio will be less than 1.

    For simulation: Step-Down Transformer Circuit Simulator.
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