Transformers

Explanation of question 8

A transformer has a ferrite core. It was probably designed to be used

  1. at high voltages
  2. with high currents
  3. at high frequencies
  4. at low frequencies

The answer is :- 3  Due to the high iron losses at high frequencies, ferrite cores are common for transformers dealing with these frequencies. They are suitable up to microwave frequencies.

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