Question 30Electricity/Electronics - Assistant Engineer70% to pass
How is the speed of a series wound winch motor controlled?
AI Explanation
The correct answer is C) varying the voltage applied to the motor.
The speed of a series wound winch motor is controlled by varying the voltage applied to the motor. Series wound motors have a direct relationship between the voltage and the speed - increasing the voltage increases the speed, and decreasing the voltage decreases the speed. This allows the operator to precisely control the winch speed by adjusting the voltage, which is a common method for controlling series wound motors used in winches and similar equipment.
The other answer choices are incorrect because: A) overcurrent protection devices protect the motor from damage, but do not directly control the speed; B) the weight of the load does not directly control the motor speed; and D) a hydraulic governor would control the speed of a hydraulic motor, not an electric series wound motor.
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