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In a transformer, the ratio of the numbe...

In a transformer, the ratio of the number of turns in the secondary coil to that in the primary coil is 10:3. Such a transformer is called_______transformer.

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Electromagnetic induction
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Knowledge Check

  • If the input voltage of a transformer is 2500 volts and output current is 80 ampere . The ratio of number of turns in the primary coil to that in secondary coil is 20 : 1 . If efficiency of transformer is 100 % , then the voltage in secondary coil as :

    A
    `(2500)/20` volt
    B
    `2500xx20`volt
    C
    `2500/(80 xx20)` volt
    D
    `(2500 xx20)/80`volt

  • A transformer has turn ratio 100 : 1. If the secondary coil has 4 amp current, then current in primary coil is

    A
    4A
    B
    0.04 A
    C
    0.4 A
    D
    400 A

  • In transformer , power of secondary coil is :

    A
    less than primary coil
    B
    more than primary coil
    C
    more in step up less in step down than primary coil
    D
    None of these

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    The number of turns in secondary coil of a transformer is 100 times the number of turns in primary coil. What is the transformer ratio ?

    The input voltage and output voltage in the primary and secondary coils of a transformer are 250 V and 5 V, respectively. If the number of turns in the primary coil of the transformer is 1000, find the number of turns in its secondary coil. Also mention, whether the transformer is a step-up one or a step-down one ?

    A transformer has turn ration 100//1 . If secondary coil has 4amp current then current in primary coil is

    In a step-up transformer, in comparison with the secondary the primary coil has __

    We want to construct a transformer that decreases the voltage 4 times. If the number of turns in the secondary coil is 1680. What must be the number of turns in primary coil?

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