Advanced Qualification · A-002 Advanced components and circuits · A-002-005-006
The control element in the silicon controlled rectifier (SCR) is called the:
- A anode
- B cathode
- C emitter
- D gate
Correct answer: D — gate. From the official ISED question bank, verified word for word.
Why
The gate acts as the small switch that turns the silicon controlled rectifier on, allowing current to flow from the anode to the cathode only when a signal arrives at this specific terminal. 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.