Advanced Qualification · A-004 Power supplies · A-004-001-006
The ripple frequency produced by a full-wave power supply connected to a normal household circuit is:
- A 60 Hz
- B 90 Hz
- C 30 Hz
- D 120 Hz
Correct answer: D — 120 Hz. From the official ISED question bank, verified word for word.
Why
In Canada, household electricity alternates 60 times per second, creating a 60 Hz cycle. 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.