Marine Electrical Systems USCG Question #11 (Set 1)

In general, what type of starter would be used to connect polyphase induction motors to full line voltage at the instant of start-up?

Official USCG Answer & Rule Citation

Correct Answer: Option B — across-the-line starters

Across-the-line starters connect the motor directly to the full supply voltage. This is the simplest and most common method for starting polyphase induction motors where the power system capacity is sufficient to handle the high inrush current without causing excessive voltage dips on the ship's service bus.

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