The higher the frequency, the size of transformer will be [Larger or Smaller] | Transformer MCQ

The higher the frequency, the ______ the size of the transformer will be:

1. Smaller
2. Larger
3. Any of the above

Correct answer: 1. Smaller

The transformer size is inversely related to the frequency.

In each cycle of alternating current, the electrical energy is converted to magnetic and then back. At higher frequency, these cycles occur more often. (At 60 Hz it will occur faster than 50 Hz). Thus at 60 Hz, a transformer can transform more faster.

So if we want to transformer same parameters we can design a comparatively smaller transformer at 60 Hz than at 50 Hz.

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