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Upon receipt of an alarm, the supervising station should:
Retransmit or dispatch promptly per code limits
Definition: Prompt handling ensures timely emergency response.
Central station service typically includes:
Installation, maintenance, testing, and monitoring as a listed service
Definition: Central station service is a listed, comprehensive offering covering the system life cycle.
Remote station service primarily means:
Signals go directly to a public fire service communications center
Definition: Remote station transmits signals to public safety communications centers.
Which condition is supervisory, not alarm?
Closed sprinkler control valve
Definition: Valve off normal is supervisory; it signals an impairment to be corrected.
Door holders should:
Release upon alarm or power loss fail safe
Definition: Fail safe release maintains smoke compartmentation during events and outages.
Stair pressurization fans in smoke control should:
Operate per the approved smoke control sequence on alarm
Definition: Smoke control functions follow a documented sequence to manage smoke movement.
Elevator recall requires annunciation of recall status at:
At the "FACU" or annunciator per design
Definition: Operators and responders need clear indication of recall status as part of the sequence.
Releasing service (clean agent) typically uses what logic?
Two detector agreement or cross zone inputs per design
Definition: Two independent events help prevent unintended discharge.
Kitchen hood extinguishing discharge should cause:
General fire alarm and shutdown of fuel and fans per sequence
Definition: Discharge is treated as a fire event, plus programmed control actions for safety.
Smoke control system status should be documented in:
A written sequence and matrix
Definition: Inputs, outputs, priorities, and fail safe states belong in a sequence matrix for testing and operations.
Mass notification messages that are non emergency should:
Yield immediately to fire alarm events
Definition: Fire alarm signaling takes precedence over non emergency announcements.
Elevator shunt trip when used should be activated by:
Heat detection where specified by the design and code
Definition: Heat at designated locations triggers shunt; follow the approved engineered sequence.
A common survivability method for speaker circuits is:
Class A routing or 2 hour rated pathways as required
Definition: Provide Class A or enhanced pathway survivability to maintain messaging during a fault.
Sprinkler waterflow switch signals are:
Alarm
Definition: Flow means water is moving; annunciate as alarm.
Fire pump running status typically reports as:
Supervisory
Definition: Running status and power loss are supervisory conditions conveying off normal states.
Gas suppression pre discharge warning should:
Include audible and visual notification per the design
Definition: Provide pre discharge warnings to clear the area before agent release.
Door unlocking for egress (electromagnetically locked doors) upon fire alarm should:
Unlock per the egress and life safety plan
Definition: Fire alarm interfaces with access control to maintain egress routes.
Post test, technicians should always:
Restore all systems to normal and notify all stakeholders
Definition: Restoration includes clearing bypasses, re enabling circuits, and notifying the owner and supervising station. Texas Fire Alarm Technician - 400Q Master (Part 3: Questions 161-240) Aligned to: "NFPA" 72 (2022), "NEC" 70 (2020) Article 760, "IBC" (2021) Section 907, and "NFPA" 101 (2021). Audio friendly flow: Question, Options A-D, “Pause”, Answer, then a tuned Definition. Pro tip: Map the word “Pause” to a 4-6 second delay. Set voice rate to about 1.05-1.15×.
Doubling the run length on a notification circuit does what to voltage drop (all else equal)?
Doubles it
Definition: Voltage drop is proportional to total conductor length; double the length roughly doubles the drop.
Upsizing wire from 18 "AWG" to 14 "AWG" generally:
Decreases resistance per foot
Definition: Larger conductors have less resistance, reducing voltage drop at end devices.
Adding more horns to a single "NAC" primarily affects:
Current draw goes up and voltage drop increases
Definition: More devices increase current; higher current across the same resistance yields more drop.
Two equal sound sources each measured at 78 "dBA" combine to approximately:
81 "dBA"
Definition: Two equal sources add about three dB at the same measurement location.
Doubling distance from a point source ideally changes the level by:
−6 dB
Definition: In free field, level drops roughly six dB for each doubling of distance.
Battery sizing must include:
Both standby and alarm durations for all connected loads
Definition: Sum standby (quiescent) currents for the standby time and alarm currents for the alarm time.
Speaker tap totals for a 50 watt amplifier should be planned at:
Slightly under with headroom
Definition: Leave headroom to prevent clipping and maintain intelligibility.