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Fire Alarm Systems Flashcards

7 cards from real FST 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 Systems flashcards as text
  1. Which NFPA standard governs the installation of fire alarm and signaling systems?

    Answer: NFPA 72

    NFPA 72, the National Fire Alarm and Signaling Code, is the primary standard governing the installation, inspection, testing, and maintenance of fire alarm systems.

  2. A Class A initiating device circuit differs from a Class B circuit primarily because Class A:

    Answer: Provides a trouble signal on open circuit but still operates

    Class A circuits are wired in a loop that returns to the panel, so a single open fault still allows devices on the other side to operate and generates a trouble signal.

  3. What is the maximum allowable sound pressure level for a fire alarm audible notification appliance in a sleeping area per NFPA 72?

    Answer: 110 dB(A)

    NFPA 72 caps audible appliances at 110 dB(A) measured at the pillow to protect hearing while still providing effective wake-up signals.

  4. A duct smoke detector is required to perform which primary function?

    Answer: Shut down HVAC equipment to prevent smoke recirculation

    Duct smoke detectors are primarily installed to shut down air-handling units and prevent smoke from spreading through ductwork to other areas.

  5. During a walk test of a fire alarm system, an inspector activates each device individually. What is being verified?

    Answer: That each device sends a unique point identification to the panel

    A walk test confirms that each initiating device is properly mapped and transmits its unique address or zone ID to the fire alarm control panel.

  6. What minimum standby battery capacity is required for a fire alarm system protected premises unit per NFPA 72?

    Answer: 24 hours

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

  7. Which device would BEST detect a slow, smoldering fire with minimal flame in an office environment?

    Answer: Photoelectric smoke detector

    Photoelectric smoke detectors are more sensitive to large combustion particles produced by slow, smoldering fires, making them ideal for this scenario.