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## 04/04/2021

Solution

### Rectifier efficiency

= ( Output DC Power / Input AC Power ) × 100%

= ( 24 / 60 ) × 100%

= 40%

### Power efficiency

• The input of the single half wave rectifier is 60 W , it means that 30 W for positive half cycle and remaining 30 W for negative half cycle.
• As the single phase half wave rectifier conducts only for half cycle therefore only 30 W for positive half cycle is converted into 24 W and remaining 6 watts as loss.

Power efficiency

= ( Output DC Power / Half of Input AC Power ) × 100%

= ( 24 / 30 ) × 100%

=  80%

Therefore the rectifier efficiency is 40% whereas the power efficiency is 80%.

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