<p>The input AC waveform and two output waveforms are shown: one corresponds to a half-wave rectifier, and the other to a full-wave rectifier.</p>

<p><img alt="" src="https://school.achievam.com/upload/questionbank/question/que_1758534205.jpg" style="height:150px; width:390px" /></p>

<p>(a) Identify which waveform belongs to the half-wave rectifier and which to the full-wave rectifier.<br />
(b) State the frequency relation between input and output for each case.<br />
(c) Which rectifier provides higher average DC output? Justify your answer.</p>