Advanced Qualification · A-002 Advanced components and circuits · A-002-006-004
For what portion of a cycle does a Class B amplifier operate?
- A Less than 180 degrees
- B More than 180 degrees but less than degrees
- C The entire cycle
- D 180 degrees
Correct answer: D — 180 degrees. From the official ISED question bank, verified word for word.
Why
A Class B amplifier conducts current for exactly half of the input signal wave, which equals 180 degrees of the 360-degree cycle. 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.