Question

what is the ripple(output) frequency of a half - wave rectifier if the input ac supply frequency is 50 hz? hz 100 o hz 25 o hz 0 o hz 50 o which of the following are disadvantages of a half - wave rectifier compared to a full - wave rectifier? it is need one diode it is less efficient (lower output dc power). it has a higher output frequency. it is much harder to filter smooth.

Explanation:

Step1: Recall half - wave rectifier frequency property

The ripple frequency of a half - wave rectifier is equal to the input AC supply frequency.

Step2: Identify input frequency

The input AC supply frequency is given as 50 Hz. So the ripple frequency of the half - wave rectifier is also 50 Hz.

Step3: Analyze half - wave rectifier disadvantages

A half - wave rectifier only conducts for half of the input cycle. It is less efficient (lower output DC power) because it only uses half of the AC input waveform. Also, due to its lower output frequency compared to full - wave rectifier and the presence of more ripple, it is much harder to filter smoothly.

Answer:

First question: Hz 50
Second question:
It is less efficient (lower output DC power).
It is much harder to filter smooth.