Advanced Qualification · A-002 Advanced components and circuits · A-002-005-010
When it is gated "on", the silicon controlled rectifier (SCR) exhibits electrical characteristics similar to a:
- A forward-biased silicon rectifier
- B reverse-biased silicon rectifier
- C forward-biased PIN diode
- D reverse-biased hot-carrier (Schottky) diode
Correct answer: A — forward-biased silicon rectifier. From the official ISED question bank, verified word for word.
Why
When a silicon controlled rectifier is gated on, it acts like a closed switch that lets current flow easily in one direction, just like a forward-biased silicon rectifier does when it conducts. 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.