Question

In the diagram, the input is across the terminals A and C and the output is across B and D. Then, the output is

• A. zero
• B. same as the input
• C. full wave rectifier
• D. half wave rectifier

Answer 1

The correct option is D half wave rectifier

In the circuit, we can put an Alternating Current source in between the points $A$ & $C$ and we will connect the points $B$ & $D$ with an external resistance $PQ$ with resistance $R\Omega$.

When the voltage of the point $A^{\prime }$ is more than the point $C^{\prime }$, the direction of current flow will be as follows-

$A^{\prime }\to A\to B\to P\to Q\to D\to C\to C^{\prime }$

When the voltage of the point $A^{\prime }$ is less than the point $C^{\prime }$, the current will not flow because $D_3$ and $D_4$ both are in reverse bias.

Hence, the output will be a half-wave rectifier.