Question 129: AC fundamentals

Question

For the given circuit, comment on the type of transformer used.
![](https://imagex.cdn.examgoal.net/1kmiy3wub/20e91054-7e7e-4409-b3b7-f1e8698b05e3/1587e530-8a26-11eb-91cf-1f26b16dd4dd/file-1kmiy3wuc.jpg)

Accepted Answer

Voltage across secondary coil,
= ${{Power\,across\,load} \over {Current\,pas\sin g\,through\,load}}$
$ \Rightarrow {V_2} = {P \over {{I_L}}} = {{60} \over {0.11}} \Rightarrow {V_2} = 545.45$ V
Voltage across primary coil, V
1
= 220V
$\Rightarrow$ V
2
> V
1
It means that step-up transformer is used.

Answer

Auxiliary transformer

Answer

Step down transformer

Answer

Step-up transformer

Answer

Auto transformer

AC fundamentals

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

Choose the correct answer: