Advanced Qualification · A-002 Advanced components and circuits · A-002-005-009
Which of the following devices has anode, cathode, and gate?
- A The silicon controlled rectifier (SCR)
- B The bipolar transistor
- C The field effect transistor
- D The triode vacuum tube
Correct answer: A — The silicon controlled rectifier (SCR). From the official ISED question bank, verified word for word.
Why
The silicon controlled rectifier (SCR) is the only device listed with an anode, cathode, and gate because it acts as a switch that turns on when a small signal hits the gate and stays on until the current stops. 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.