Question

In a full wave rectifier circuit operating from $50\text{Hz}$ mains frequency, the fundamental frequency in the ripple would be

• A. $50\text{Hz}$
• B. $25\text{Hz}$
• C. $100\text{Hz}$
• D. $70.7\text{Hz}$

Answer 1

The correct option is C $100\text{Hz}$

The frequency of the A.C. input, $f_{in}=50\text{Hz}$

Using a full wave rectifier, the output voltage waveforms are as shown below.



$\Rightarrow$ The frequency is doubled, i.e. $f_{out}=100Hz$

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