What is the name of the DC motor speed control method utilized as shown in figure "B" of the illustration? Illustration EL-0101
Official USCG Answer & Rule Citation
Correct Answer: Option C — Ward-Leonard
The Ward-Leonard system employs a motor-generator set to supply a variable generator output voltage directly to the armature of a main drive motor. Recognized in IEEE 45, this classic configuration provides precise, stepless speed control over a wide operational range.
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