Question 415Electricity & Electronics - QMED

70% to pass

When a nickel-cadmium battery begins gassing while connected to the battery charging circuit, what should be done?

Aadd distilled water to each cell to reduce the specific gravity of the electrolyte
Bdo nothing as this is a normal condition when charging
Cadd potassium hydroxide to each cell to increase the specific gravity of the electrolyte
Dincrease the charging rate
AI Explanation

The correct answer is B) do nothing as this is a normal condition when charging. When a nickel-cadmium battery is being charged, it is normal for the battery to begin gassing. This is a result of the chemical reactions taking place during the charging process and indicates that the battery is being properly charged. Attempting to add distilled water (option A) or potassium hydroxide (option C) could disrupt the charging process and potentially damage the battery. Similarly, increasing the charging rate (option D) could also be harmful and is not the appropriate response. The best course of action is to simply allow the battery to continue charging as normal, as the gassing is an expected and harmless side effect of the charging process.

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