Question 187Electricity & Electronics - 1st Asst/Chief

70% to pass

What is the most common and reliable type of circuit breaker used for high voltage practice aboard ship?

Avacuum-break
Bgas-break
Coil-break
Dair-break
AI Explanation

The correct answer is A) vacuum-break. Vacuum-break circuit breakers are the most common and reliable type of circuit breaker used for high voltage applications aboard ships. This is because vacuum-break circuit breakers are highly effective at interrupting high-current, high-voltage electrical circuits in a compact and reliable manner. The use of a vacuum to extinguish the electrical arc makes vacuum-break circuit breakers a safer and more efficient option compared to other types like gas-break, oil-break, or air-break. The other answer choices are not as suitable for high voltage marine applications. Gas-break and oil-break circuit breakers are less compact and have higher maintenance requirements. Air-break circuit breakers are generally not rated for the high voltages used aboard ships.

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