Question

The diagram below shows the core of a transformer and its input and output connections.

1. State the material used for the core.
2. Copy and complete the diagram of the transformer by drawing input and output coils.

The diagram alongside shows the core of a transformer and the input and output connections.

1. State the material for the core.
2. Copy and complete the diagram, clearly showing the primary and secondary coils.

Answer 1

(i) The core is made of laminated soft iron.

(ii) The transformer is a step-down transformer, as it reduces the voltage from 220 V AC to 44 V AC.

Using the transformer formula,

\[ \frac{V_p}{V_s}=\frac{N_p}{N_s} \]

\[=\frac{220}{44}\]

\[={5:1} \]