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Engine: Electricity

Question 689 of 1,386

Refer to the simplified diagram of the AC synchronous electric motor drive system as shown in the illustration. The propulsion motor operates from maneuvering speed to full ahead speed in the ahead direction. The propulsion motor will not operate at any speed in the astern direction. What is most likely the problem? Illustration EL-0155

USCG illustration EL-0155 for Engine Electricity question 689
Illustration EL-0155
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