Advanced Qualification · A-004 Power supplies · A-004-001-007
The ripple frequency produced by a half-wave power supply connected to a normal household circuit is:
- A 90 Hz
- B 120 Hz
- C 30 Hz
- D 60 Hz
Correct answer: D — 60 Hz. From the official ISED question bank, verified word for word.
Why
In Canada, the household electricity supply alternates direction 60 times every second, which is called 60 Hz. 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.