Advanced Qualification · A-002 Advanced components and circuits · A-002-006-010
Which class of amplifier operates over the full cycle?
- A Class C
- B Class A
- C Class AB
- D Class B
Correct answer: B — Class A. From the official ISED question bank, verified word for word.
Why
Class A amplifiers are designed so the active component conducts electricity for the entire 360 degrees of the input signal cycle, meaning the output wave is a perfect copy of the input without any gaps. The full explanation — and one for every question — is in Pro.
Practise this section
Advanced components and circuits: semiconductors, amplifier classes, oscillators, mixers, filters and digital logic.