Practice Test Geeks(S95) Supervision of Fire Alarm System Practice Test
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Notification Appliances Flashcards

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  1. A device that integrates both audible and visual notification functions in a single housing is classified as a:

    Answer: Combination notification appliance

    Devices incorporating both audible (horn) and visual (strobe) notification in one unit are classified by NFPA 72 as combination notification appliances.

  2. Voice evacuation systems use which type of notification appliance to deliver intelligible emergency instructions?

    Answer: Speakers

    Voice evacuation systems utilize speakers to deliver pre-recorded or live intelligible voice messages with specific emergency instructions to occupants.

  3. Which NFPA standard contains requirements for speech intelligibility of voice/alarm communication systems (VACS)?

    Answer: NFPA 72

    NFPA 72 (National Fire Alarm and Signaling Code) contains requirements for speech intelligibility of voice/alarm communication systems, including measurement methods.

  4. Per NFPA 72, if the average ambient sound level continuously exceeds 105 dB, which notification method is acceptable?

    Answer: Provide visual notification only

    When ambient noise levels exceed 105 dB, NFPA 72 permits visual-only notification since it is impractical to achieve audible alarm levels that exceed such extreme ambient noise.

  5. Per NFPA 72, strobe lights must flash at a rate between:

    Answer: 1–2 flashes per second

    NFPA 72 requires strobe lights to operate at a flash rate of 1 to 2 flashes per second (1–2 Hz) for effective visual notification.

  6. Which power source serves as the secondary (standby) power for fire alarm notification appliances when primary AC power fails?

    Answer: A battery backup system

    Battery backup systems serve as the required secondary power source under NFPA 72, maintaining notification appliance operation for a defined period during AC power failures.

  7. Which of the following is NOT a recognized category of notification appliances per NFPA 72?

    Answer: Olfactory notification appliances

    NFPA 72 recognizes audible, visible, and tactile notification appliances; olfactory (smell-based) notification is not a defined category in the standard.

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