Multiple choice general knowledge science & technology

Which of the following can be used to control the speed of a D. C. motor?

  1. Thermistor

  2. Thyristor

  3. Thyratron

  4. Transistor
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A Thyristor can be used to control the speed of a DC motor. Thyristors are semiconductor devices that allow precise control of power flow through variable switching, making them ideal for DC motor speed regulation through voltage control. Thermistors are temperature sensors, Thyratrons are gas-filled tubes, and Transistors alone don't provide the power control needed.

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