Correct Answer : Option (B) : Remove ripples from the rectified output.
Explanation : The main function of the filter in a rectifier circuit is to remove ripples from the rectified output. As we know, rectifiers are primarily used to convert alternating current (AC) to direct current (DC). There we find a considerable AC component in the output, which is called ripple.
Many electronic systems require pure direct current supply to drive or power them. To make a efficient continuous power supply that gives pure DC output, we need to remove the AC component from the output of rectifiers.
