Practice Test Geeks(CFI) Certified Fire Inspector Practice Test
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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. A fire inspector observes that a manual pull station is located 6 feet above the finished floor. Is this compliant with NFPA 72?

    Answer: No, pull stations must be between 42 and 48 inches above the finished floor

    NFPA 72 requires manual fire alarm boxes (pull stations) to be mounted between 42 inches (3.5 ft) and 54 inches (4.5 ft) above the finished floor.

  2. Which detector type uses a radioactive source to ionize air in a sensing chamber, making it sensitive to very small combustion particles?

    Answer: Ionization smoke detector

    Ionization detectors use a small amount of Americium-241 to ionize air; smoke particles disrupt the ionized current, triggering the alarm.

  3. An air-sampling smoke detection (ASD) system is BEST described as:

    Answer: An active system that draws air through a pipe network to a central detector for analysis

    Air-sampling systems actively draw air from the protected area through sampling pipes to a highly sensitive central detector, enabling very early detection.

  4. What is the purpose of end-of-line (EOL) resistors in a fire alarm initiating device circuit?

    Answer: Allow the control panel to supervise the circuit for open or short-circuit conditions

    EOL resistors are placed at the farthest end of a circuit so the panel can continuously verify circuit integrity by monitoring current flow.

  5. Under NFPA 72, what is the maximum travel distance to a manual pull station in a non-sprinklered building?

    Answer: 200 feet

    NFPA 72 requires manual fire alarm boxes to be located so the maximum travel distance to the nearest box does not exceed 200 feet.

  6. A visible notification appliance (strobe) must synchronize with other strobes in the same room to prevent what hazard?

    Answer: Seizure risk from multiple unsynchronized flash rates

    Unsynchronized strobes can produce flash rates that trigger photosensitive seizures; NFPA 72 requires synchronization to keep the combined rate within safe limits.

  7. Which condition would cause an initiating device circuit to generate a 'trouble' signal rather than an 'alarm' signal?

    Answer: An open wire break in the circuit wiring

    An open-circuit fault in the wiring is a supervisory/trouble condition, not an alarm condition, because it represents a system integrity problem rather than a fire event.