Study for the Internet of Things (IOT102) Test. Access comprehensive flashcards and multiple choice questions, each with hints and explanations. Get prepared for your exam!

Multiple Choice

What does PWM stand for in electronics?

Pulse Width Modulation is a technique used in electronics to control the power delivered to a load by adjusting the width of the high portion of a repetitive signal at a constant frequency. By widening the on-time within each cycle, you raise the average voltage the load receives; narrowing it lowers it. The percentage of time the signal stays high is the duty cycle, and this approach is widely used for motor speed control, LED dimming, and efficient power conversion because it minimizes wasted energy. The other terms listed aren’t standard names in electronics, so the correct term is Pulse Width Modulation.

Pulse Width Modulation is a technique used in electronics to control the power delivered to a load by adjusting the width of the high portion of a repetitive signal at a constant frequency. By widening the on-time within each cycle, you raise the average voltage the load receives; narrowing it lowers it. The percentage of time the signal stays high is the duty cycle, and this approach is widely used for motor speed control, LED dimming, and efficient power conversion because it minimizes wasted energy. The other terms listed aren’t standard names in electronics, so the correct term is Pulse Width Modulation.