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Which one of the following is NOT a method of universal motor speed control? A. Tapped field windings with a switch selector B. Varying the voltage using semicoinductor devices C. Dynamic braking of the motor's shaft D. Using an adjustable centrifugal switch in parallel with a reistor

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Answer:

C

Explanation:Three methods of controlling the speed of a universal electric motor are: the resistance control method-which involved varying the voltage using semicoinductor devices,

the field tapping method, and the centrifugal switch method. In the resistance control method.

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