Question

A full wave rectifier circuit along with the input and output voltages is shown in the figure. The contribution to output voltage from diode $2$ is

• A. A, C
• B. B, D
• C. B, C
• D. A, D

Answer 1

Answer: (B)

In the positive half cycle of input ac signal diode $D_1$ is forward biased and $D_2$ is reverse biased so in the output voltage signal, $A$ and $C$ are due to $D_1$. In the negative half cycle of input ac signal $D_2$ conducts, hence output signals $B$ and $D$ are due to $D_2$.