What is the name of the DC motor speed control method utilized as shown in figure "B" of the illustration? EL-0101
Official USCG Answer & Rule Citation
Correct Answer: Option D — Ward-Leonard
The Ward-Leonard control system is a classic adjustable-voltage DC motor drive method utilizing a dedicated motor-generator set. By varying the generator field excitation, the armature voltage supplied to the driven DC motor is smoothly controlled, offering precise speed and torque regulation for heavy marine deck machinery.
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