Transformers and the national grid

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Question 14
Easy

A step-down transformer at a regional substation is used to prepare electricity from the supergrid for local industrial distribution.

Diagram of a step-down transformer at a substation

Calculate the value of the following ratio for the transformer shown above:

number of turns on the primary coilnumber of turns on the secondary coil \frac{\text{number of turns on the primary coil}}{\text{number of turns on the secondary coil}} number of turns on the secondary coilnumber of turns on the primary coil​
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Transformers and the national grid Questions

  1. GCSE
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