Advanced Qualification · A-004 Power supplies · A-004-003-004
What type of linear regulator is used in applications requiring efficient utilization of the primary power source?
- AA constant current source
- BA shunt current source
- CA series regulator
- DA shunt regulator
Correct answer: C — A series regulator. From the official ISED question bank, verified word for word.
Why
A series regulator sits in line with the load and only draws the current the device actually needs, wasting very little energy as heat. The full explanation — and one for every question — is in Pro.
Practise this section
Power supplies is section A-004 of the Advanced exam: Power supplies: rectifiers, filtering, regulation, switching supplies and their failure modes.
Drill A-004 — free, no account