Arizona Drivers Permit Practice Exam Guide

What is the purpose of a primary and secondary power supply in a fire alarm panel?

To double the voltage available to devices To separate smoke detectors from pull stations To ensure system operation continues during an AC power failure To power third-party HVAC relays

Correct Answer:

To ensure system operation continues during an AC power failure

Explanation:

Fire alarm systems require a primary power source (usually building AC) and a secondary source (usually batteries) to maintain operation if the primary power fails.

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