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Fire Alarm & Detection Systems Flashcards

7 cards from real CFI practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Fire Alarm & Detection Systems flashcards as text

  1. Which type of detector would be MOST appropriate in a commercial kitchen where cooking fumes could cause nuisance alarms?

    Answer: Fixed-temperature heat detector

    Fixed-temperature heat detectors are preferred in commercial kitchens because they are not affected by cooking vapors, steam, or aerosols that trigger smoke detectors.

  2. What is the required audible alarm sound level at the pillow in sleeping areas per NFPA 72?

    Answer: 75 dB(A)

    NFPA 72 requires a minimum of 75 dB(A) at the pillow to ensure sleeping occupants can be awakened by the alarm signal.

  3. A fire alarm control unit (FACU) displays a 'ground fault' trouble condition. What does this indicate?

    Answer: An unwanted electrical connection exists between a circuit conductor and earth ground

    A ground fault occurs when a wire insulation failure or moisture causes an unintended connection between a circuit conductor and the building ground.

  4. When inspecting a fire alarm system, an inspector discovers that the system has not been tested in 18 months. Per NFPA 72, what is the minimum required testing frequency for most components?

    Answer: Annually

    NFPA 72 Chapter 14 requires that most fire alarm system components be tested at a minimum frequency of annually.

  5. What is the function of a 'notification appliance circuit' (NAC) in a fire alarm system?

    Answer: Connect the control panel to audible or visual alerting devices such as horns and strobes

    The NAC is the wiring circuit that carries the signal from the fire alarm control unit to the horns, bells, strobes, and other notification appliances.

  6. A fire inspector is evaluating a voice evacuation system. Which NFPA 72 chapter primarily addresses emergency communications systems?

    Answer: Chapter 24

    NFPA 72 Chapter 24 covers emergency communications systems, including in-building fire emergency voice/alarm communications systems.

  7. What minimum standby battery capacity must a fire alarm system maintain per NFPA 72 for a system that does not receive a supervisory signal within 200 seconds?

    Answer: 24 hours standby plus 5 minutes alarm

    NFPA 72 requires a minimum of 24 hours of standby capacity followed by 5 minutes of alarm operation for most protected premises fire alarm systems.