Advanced Qualification · A-004 Power supplies · A-004-002-002
Which of the following circuits gives the best regulation, under similar load conditions?
- AA full-wave rectifier with a choke input filter
- BA half-wave bridge rectifier with capacitor input filter
- CA half-wave rectifier with a choke input filter
- DA full-wave rectifier with a capacitor input filter
Correct answer: A — A full-wave rectifier with a choke input filter. From the official ISED question bank, verified word for word.
Why
A full-wave rectifier with a choke input filter provides the best regulation because the choke, an inductor that resists changes in current, smooths the flow of electricity more effectively than a capacitor alone, keeping the voltage steady even when the load changes. The full explanation — and one for every question — is in Pro.
Practise this section
Power supplies is section A-004 of the Advanced exam: Power supplies: rectifiers, filtering, regulation, switching supplies and their failure modes.
Drill A-004 — free, no account