Advanced Qualification · A-004 Power supplies · A-004-002-001
Filter chokes are rated according to:
- A power loss
- B breakdown voltage
- C inductance and current-handling capacity
- D reactance at 1000 Hz
Correct answer: C — inductance and current-handling capacity. From the official ISED question bank, verified word for word.
Why
Filter chokes smooth out power supply ripple by storing energy in a magnetic field, so they must be rated for how much inductance they provide and how much current they can carry without overheating or saturating. 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.