Question

For the given circuit, comment on the type of transformer used.

• A. Step down transformer
• B. Auxilliary transformer
• C. Step up transformer
• D. Auto transformer

Answer 1

The correct option is C Step up transformer

Given, Primary voltage, $V_p=220$ volt

​​​​​​​For secondary coil:
$P_s=V_s\times I_s$
$60=V_s\times 0.11$
Secondary voltage, $V_s=\frac{60}{0.11}=545.45$ volts,

$\because V_s>V_p$, so it is a step up transformer.