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Question

A transformer works on


A

AC only

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B

DC only

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C

High voltage only

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D

Both A and B

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Solution

The correct option is A

AC only


  1. Transformer is a device that increases or decreases the level of voltage or current.
  2. There are two types of transformer - step up and step down.
  3. Transformer works on the principle of Faraday's law of electromagnetic induction.
  4. It means that the transformer works on AC signals only.

Hence, option A is correct.


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