Marine Electrical Systems USCG Question #1191 (Set 40)

Which of the following statements is true concerning the motor controller circuit shown in the illustration? EL-0004

USCG Exam Illustration EL-0004
USCG Examination Diagram: Illustration EL-0004
Official USCG Answer & Rule Citation

Correct Answer: Option C — The controller is configured for across-the-line (direct-on-line) starting.

Across-the-line starting, or direct-on-line (DOL), connects the motor directly to the full supply voltage upon activation. The schematic shows no autotransformers, resistors, or reactors in the primary circuit, confirming the controller is designed for full-voltage starting, which is common for smaller marine motors where inrush current is acceptable.

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