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Detection and Alarm Systems Flashcards

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

Read the first 7 Detection and Alarm Systems flashcards as text

  1. A mass notification system (MNS) integrated with a fire alarm system must give priority to:

    Answer: Fire alarm signals over all other MNS messages

    NFPA 72 requires that life-safety fire alarm signals take priority over MNS messages to ensure occupants always receive fire evacuation instructions first.

  2. The Common Indicating Circuit (CIC) in a multiplex fire alarm system is used to:

    Answer: Carry multiple alarm signals over a single pair of conductors using time-division or frequency-division multiplexing

    A multiplex or signaling line circuit (SLC) transmits data from many devices over shared conductors by assigning each device a unique address and using multiplexing protocols.

  3. In the context of NFPA 72, a 'protected premises' fire alarm system is one that:

    Answer: Is located at and serves the property where the protected area exists

    A protected premises system (formerly local system) is installed at and serves the property itself, as opposed to supervising station or public emergency alarm reporting systems.

  4. Which detector type is BEST suited for detecting a fast-flaming fire involving flammable liquids in an open outdoor environment?

    Answer: UV/IR flame detector

    UV/IR flame detectors respond directly to the radiant energy spectrum of open flames and are not confused by wind or ambient dilution of smoke, making them ideal for outdoor flammable liquid hazards.

  5. An end-of-line (EOL) resistor in a conventional fire alarm initiating device circuit provides which function?

    Answer: Allows the panel to supervise the circuit for open-circuit faults

    The EOL resistor creates a known current flow that the panel monitors; if the circuit opens (wire break or device removed), the current changes and the panel generates a trouble signal.

  6. According to NFPA 72, when must a fire alarm system undergo a full acceptance test?

    Answer: Prior to the system being placed into service for the first time

    NFPA 72 mandates a complete acceptance test before a new or substantially modified fire alarm system is placed in service to verify all components function as designed.

  7. A single-station smoke alarm differs from a system smoke detector primarily because it:

    Answer: Contains its own integral sounder and operates independently without a fire alarm control panel

    Single-station alarms are self-contained units with an integral audible device that operate independently, whereas system detectors transmit signals to a central FACP for processing and annunciation.