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Which of the following are true about capacitor filter?

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Which of the following are true about capacitor filter?

(a) It is also called as capacitor output filter

(b) It is electrolytic

(c) It is connected in parallel to load

(d) It helps in storing the magnetic energy

I had been asked this question in examination.

This intriguing question originated from Capacitor Filters in division Application of Diodes of Electronic Devices & Circuits

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Correct choice is (b) It is electrolytic

The explanation: The rectifier may be full wave or half wave. The capacitors are usually electrolytic even though they are large  in size.

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