Question : The device used to change the speed of an electric fan is:
Option 1: Amplifier
Option 2: Regulator
Option 3: Switch
Option 4: Rectifier
Correct Answer: Regulator
Solution : The correct answer is Regulator .
Typically, the tool used to adjust the speed of an electric fan is referred to as a "fan speed controller"; or "fan speed regulator". These gadgets are made to vary the voltage supplied to the fan's motor, which alters the speed of the fan. Fan speed controllers can be embedded within the fan itself, wall-mounted switches, remote controls, or other configurations. Rotating dials, sliding switches and electronic controllers with numerous speed settings are a few examples of typical fan speed control systems.
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