Advanced Qualification · A-002 Advanced components and circuits · A-002-006-002
Which class of amplifier has the highest linearity and least distortion?
- 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 keep the output transistor conducting for the entire cycle of the radio signal, which prevents the signal from being chopped or bent. 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.