Based on the understanding operations of rectifies answer the questions Diodes can be used for rectifying on ac voltage (restricting the ac voltage to one direction) with the help of a capacitor or a suitable filter, a dc voltage ca be obtained.

Input and output voltage signal for a device X are shown below. Identify X.

Half wave rectifier

The correct answer is option (3) : Half wave rectifier

The output of Half wave rectifier have only one cycle either positive or only negative cycles.