The speed of the disc servomotor can be varied by changing the amount of voltage supplied to the armature. The voltage is generally varied using _____.
A) phase
B) pulse-width
C) frequency
D) amplitude

Question

Quizplus · Accepted Answer

Pulse-width modulation (PWM) is a common method used to vary the voltage supplied to the armature of a servomotor, thereby controlling its speed. This technique involves varying the width of the pulses in a pulse train to adjust the average voltage and power supplied to the motor.

The Speed of the Disc Servomotor Can Be Varied by Changing