Question 529General Subjects - Assistant Engineer

70% to pass

As it pertains to the automatic electric brake of a capstan, what statement is true?

AThe brake is electrically set and spring released, and the brake automatically releases when power is removed from the electric drive motor.
BThe brake is spring set and electrically released, and the brake automatically releases when electric power is removed from the electric drive motor.
CThe brake is spring set and electrically released, and the brake automatically sets when electric power is removed from the electric drive motor.
DThe brake is electrically set and spring released, and the brake automatically sets when electric power is removed from the electric drive motor.
AI Explanation

The correct answer is C. The brake is spring set and electrically released, and the brake automatically sets when electric power is removed from the electric drive motor. This is correct because in an automatic electric brake for a capstan, the brake is designed to be spring-set, meaning it is held in the braking position by spring tension. When electric power is supplied to the motor, it energizes the brake mechanism to release the brake and allow the capstan to turn. However, when the electric power is removed, the spring automatically sets the brake, stopping the capstan. The other options are incorrect because they do not accurately describe the automatic behavior of the brake when power is removed from the electric drive motor.

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Official Resources
46 CFR Machinery & Electrical 46 CFR Engineering USCG National Maritime Center
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