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?
- A A constant current source
- B A shunt current source
- C A series regulator
- D A 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: rectifiers, filtering, regulation, switching supplies and their failure modes.