Question

The transformer ratio in the step-up transformer is

• A. equal to $1$.
• B. greater than $1$.
• C. less than $1$.
• D. less than $0$.

Answer 1

The correct option is B greater than $1$.

We know that, transformer ratio is given by,

$k=\frac{N_S}{N_P}=\frac{E_S}{E_P}$

For a step-up transformer, $E_S>E_P$

$\Rightarrow k>1$

Hence, option $\left(B\right)$ is the correct answer.