Advanced Qualification · A-004 Power supplies · A-004-002-007
In a power supply, series chokes will:
- A impede the passage of DC but will pass the AC component
- B impede both DC and AC
- C readily pass the DC but will impede the flow of the AC component
- D readily pass the DC and the AC component
Correct answer: C — readily pass the DC but will impede the flow of the AC component. From the official ISED question bank, verified word for word.
Why
A series choke is simply a coil of wire that acts like a filter in a power supply. 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.