Question 510Electricity & Electronics - Assistant Engineer

The correct answer is D) vacuum-break. Vacuum-break circuit breakers are the most common and reliable type of circuit breaker used for high voltage practice aboard ships. This is because vacuum-break circuit breakers are well-suited for maritime applications due to their compact size, low maintenance requirements, and ability to reliably interrupt high-voltage electrical circuits. In contrast, the other options such as oil-break, gas-break, and air-break circuit breakers are less commonly used in modern marine electrical systems.