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Q11: Speed control of motors (ac motors as well as dc motors) can be accomplished by...

Q11: Speed control of motors (ac motors as well as dc motors) can be accomplished by using solid-state switching circuitry In one such method, a solid-state relay is activated using a switching signal generated by a microcomputer so as to turn on and off at high speed, the power into the motor drive circuit. Speed of the motor can be measured using a sensor such as tachometer or optical encoder. This signal is read by the microcomputer and is used to modify the switching signal so as to correct the motor speed. Using a schematic diagram, describe the hardware needed to implement this control scheme. Explain the operation of the control system.

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