Inspection & Quality Control Flashcards
7 cards from real CAT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Inspection & Quality Control flashcards as text
An alarm technician finds that a notification appliance circuit (NAC) is wired without an end-of-line resistor. What problem does this create?
Answer: The panel cannot supervise the circuit for open faults
End-of-line resistors enable the panel to detect open faults through supervision; without them, opens go undetected.
What is the correct method for testing a carbon monoxide (CO) detector per manufacturer and NFPA 720 guidelines?
Answer: Use calibrated CO gas from a known-concentration test kit
CO detectors must be tested with calibrated CO gas at a known concentration to verify proper sensor response.
During a quality control review, a technician notices that conduit penetrations through a fire-rated wall are not sealed. Which standard addresses this deficiency?
Answer: NFPA 70 and local fire-stop requirements per the IBC
Firestopping of conduit penetrations is governed by NFPA 70, the International Building Code, and applicable fire-stop standards.
A technician is inspecting a battery backup system on a fire alarm control panel. The calculation shows the panel requires 24-hour standby plus 5 minutes of alarm. What factor must the battery capacity include?
Answer: A 20% safety margin added to the calculated amp-hour requirement
NFPA 72 requires battery capacity to be calculated at 20% above the computed load to account for battery aging.
What does a ground fault indication on a fire alarm panel most commonly signal?
Answer: An unintentional electrical connection between a circuit conductor and earth ground
A ground fault occurs when an insulation breach allows a circuit conductor to contact a grounded surface, indicated on the panel as a trouble condition.
When is a sensitivity test required for analog addressable smoke detectors under NFPA 72?
Answer: Within one year of installation and every other year thereafter
NFPA 72 requires sensitivity testing within the first year and at least every alternate year for analog smoke detectors.
Which tool is used to verify that a smoke detector's sensitivity falls within its listed and NFPA 72-acceptable range?
Answer: A calibrated smoke detector test meter (sensitivity tester)
A calibrated smoke detector sensitivity tester introduces a controlled aerosol and measures the detector's alarm threshold against listed limits.