Advanced Qualification · A-004 Power supplies · A-004-002-004
With a normal load, the choke input filter will give the:
- A greatest ripple frequency
- B highest output voltage
- C best regulated output
- D greatest percentage of ripple
Correct answer: C — best regulated output. From the official ISED question bank, verified word for word.
Why
A choke input filter uses an inductor to smooth the flow of current, which keeps the voltage steady even when the power demand changes. The full explanation — and one for every question — is in Pro.
Practise this section
Power supplies: rectifiers, filtering, regulation, switching supplies and their failure modes.