Question 425Electricity & Electronics - Assistant Engineer

70% to pass

In accordance with 46 CFR Part 112, a storage battery for an emergency lighting and power system must have the capacity to accomplish which of the following?

Aclose all watertight doors twice and open them once

Bopen all watertight doors four times and close them twice

Copen and close all watertight doors in six consecutive cycles within a 20 second period

Dopen and close all watertight doors in six consecutive cycles within a 45 second period

AI Explanation

The correct answer is A) close all watertight doors twice and open them once. According to 46 CFR Part 112, the storage battery for an emergency lighting and power system must have the capacity to operate all watertight doors at least twice in the closed position and once in the open position. This requirement ensures that the emergency power system can reliably control the watertight doors during an emergency situation. The other answer choices are incorrect because they do not align with the specific requirements outlined in the regulation. Option B requires more door cycles than necessary, while options C and D specify time frames that are not part of the regulatory standard.

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