ARRL Technician Practice Exam

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Prepare for the ARRL Technician Exam with this interactive quiz. Study with flashcards, multiple choice questions, each providing detailed explanations and hints. Ace your exam with confidence!

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What can happen if a lead-acid storage battery is charged or discharged too quickly?

The battery will lose its charge
The battery could overheat and give off flammable gas or explode
The battery will last longer
The battery will function normally

The correct answer is: The battery could overheat and give off flammable gas or explode

When a lead-acid storage battery is charged or discharged too quickly, it can lead to overheating due to the rapid chemical reactions occurring within the battery. This overheating can cause the electrolyte within the battery to boil, which not only increases pressure but can also lead to the release of flammable hydrogen gas. If the pressure becomes too great, it may result in the battery case rupturing or even exploding, presenting serious safety hazards. Under normal charging conditions, lead-acid batteries are designed to handle specific rates of charge and discharge, which help maximize their lifespan and performance. Deviations from these rates can cause internal damage and greatly reduce the efficiency and longevity of the battery. Thus, emphasizing the importance of following manufacturer guidelines for charging and discharging rates is critical for safe and optimal battery operation.