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NEW QUESTION # 43
With all notification appliances operating, what is the maximum sound pressure level, combined with the ambient sound pressure level, at the minimum hearing distance allowed by code?
- A. 100 dBA
- B. 110 dBA
- C. 105 dBA
- D. 115 dBA
Answer: C
Explanation:
NFPA 72 places amaximum allowable sound pressure levelto prevent hearing damage or discomfort in occupied areas.
NFPA 72 (2022), Section 18.4.1.5:
"The total sound pressure level produced by the fire alarm system, including ambient noise, shall not exceed
105 dBA at the minimum hearing distance from the audible appliance."
This ensures alarm audibilitywithout causing harm.
Correct answer: B. 105 dBA
NEW QUESTION # 44
When testing a room temperature switch, below what temperature does the off-normal signal occur?
- A. 32 °F (0.0 °C)
- B. 40 °F (4.4 °C)
- C. 50 °F (10.0 °C)
- D. 45 °F (7.2 °C)
Answer: B
Explanation:
Room temperature switches are used to detectfreezing conditionsin environments such as sprinkler valve rooms. An off-normal (supervisory) condition is triggered if the temperature dropsbelow 40 °F (4.4 °C).
NFPA 72 (2022), Section A.17.16.1.1:
"Low-temperature supervisory signals shall be initiated when the temperature falls below 40 °F (4.4 °C) unless otherwise specified." This signal helps prevent system damage or failure due to freezing.
Correct answer: B. 40 °F (4.4 °C)
NEW QUESTION # 45
Lights used for fire alarm signaling shall be which of the following colors?
- A. Clear or red
- B. Clear or nominal white
- C. Clear or blue
- D. Clear or amber
Answer: A
Explanation:
Visible notification appliances used in fire alarm systems (like strobes) must be eitherclear or redto distinguish them from other building systems.
NFPA 72 (2022), Section 18.5.1.4:
"Visible signals used in fire alarm systems shall be clear or nominal red in color." This ensuresstandardized visual recognitionduring fire emergencies.
Correct answer: D. Clear or red
NEW QUESTION # 46
Which three of the following parties gets notified that the system has been restored? (Choose three.)
- A. Authority Having Jurisdiction
- B. First responders
- C. Monitoring organization
- D. Building occupants
Answer: A,C,D
Explanation:
After impairment or testing, NFPA 72 requires that all previously notified parties beinformed that the system has been returned to service. This includes those who could be affected by or responsible for system monitoring and emergency response.
NFPA 72 (2022), Section 10.21.3.8:
"When the system has been returned to normal, the persons and facilities previously notified (including the supervising station, building occupants, and AHJ, where required) shall be notified that testing is complete and the system is restored." Although "first responders" isn't explicitly listed,they're typically contacted through the AHJ or monitoring center, so they're not usually notified directly by technicians.
Correct answers:
* Authority Having Jurisdiction
* Building occupants
* Monitoring organization
NEW QUESTION # 47
How often should a monitored fire alarm system be inspected for trouble signals?
- A. Weekly
- B. Semiannually
- C. Monthly
- D. Annually
Answer: A
Explanation:
NFPA 72 requires thattrouble signalsbe inspectedweeklyon monitored fire alarm systems toensure the system can detect and report problems in a timely manner.
NFPA 72 (2022), Table 14.3.1 - Inspection Frequencies:
"Supervising station systems - Trouble signals"#Weekly
This ensures any open circuits, ground faults, or system issues are discovered promptly.
Correct answer: A. Weekly
NEW QUESTION # 48
Which three of the following are types of fire alarm control units? (Choose three.)
- A. Dedicated function
- B. Releasing service
- C. Central station
- D. Protected premises
Answer: A,B,D
Explanation:
NFPA 72 identifies severaltypes of fire alarm control units (FACUs)based on their function and scope.
NFPA 72 (2022), Section 3.3.103 - Fire Alarm Control Unit (FACU):
* Dedicated Function FACU: Performs a specific fire alarm role (e.g., elevator recall or sprinkler monitoring).
* Protected Premises FACU: Installed on-site to monitor and signal within that building.
* Releasing Service FACU: Activates fire suppression systems like gas or foam.
"Central station" is asupervising station, not a control unit.
Correct answers:
* Dedicated function
* Protected premises
* Releasing service
NEW QUESTION # 49
In the event of power loss, how long shall a secondary power source for household fire alarm systems maintain operation?
- A. 24 hours in the normal condition followed by 10 minutes of alarm
- B. 24 hours in the normal condition followed by 9 minutes of alarm
- C. 24 hours in the normal condition followed by 60 minutes of alarm
- D. 24 hours in the normal condition followed by 4 minutes of alarm
Answer: A
Explanation:
Household fire alarm systems have different performance requirements from commercial systems, but still must support essential alarm functions under loss of primary power.
NFPA 72 (2022), Section 29.10.5.1.1:
"The secondary power supply shall be capable of powering the system under quiescent load for 24 hours and then capable of operating the system during alarm for a period of 4 minutes (for general fire alarm) or 10 minutes (for household fire alarm systems)." Correct answer: C. 24 hours in the normal condition followed by 10 minutes of alarm
NEW QUESTION # 50
At which height above the floor is the sound level measured for public and private modeaudible devices?
- A. 7.5 feet (2.3 meters)
- B. 2.5 feet (0.7 meter)
- C. 8.0 feet (2.4 meters)
- D. 5.0 feet (1.5 meters)
Answer: D
Explanation:
Sound level readings for fire alarm audible notification appliances must be taken at a consistent, standardized height to ensure compliance with required dBA levels.
NFPA 72 (2022), Section 18.4.6.1:
"Sound pressure level measurements shall be taken with a sound level meter positioned 5 ft (1.5 m) above the floor in the area required to be served by the system." This applies to bothpublic mode(e.g., schools, offices) andprivate mode(e.g., staff-only zones like hospitals).
Correct answer: B. 5.0 feet (1.5 meters)
NEW QUESTION # 51
After the secondary power supply has operated the fire alarm system under quiescent load,the secondary power shall be capable of operating all alarm notification appliances for which length of time?
- A. 24 hours
- B. 10 minutes
- C. 5 minutes
- D. 1 hour
Answer: B
Explanation:
Secondary power supplies must meet minimum performance durations to ensure alarm operation when primary power fails. According to NFPA 72, the system must be able to:
NFPA 72 (2022), Section 10.6.7.2.1.1:
"The secondary power supply shall have sufficient capacity to operate the system under quiescent load for a minimum of 24 hours, followed by 5 minutes of alarm (for emergency voice/alarm communication systems, 15 minutes of alarm), unless otherwise permitted by 10.6.7.2.1.2." However, thedefault minimumfor most systems (non-voice) is:
* 24 hours in normal (quiescent) mode
* Followed by 5 minutes of full alarm operation
Correct answer: A. 5 minutes
NEW QUESTION # 52
Which activity is required at the semiannual inspection of notification appliances?
- A. Verify flash rate
- B. Verify synchronization of strobes
- C. Verify candela setting
- D. Verify location and condition
Answer: D
Explanation:
Semiannualvisual inspectionof notification appliances checks theirphysical condition, mounting, visibility, and labeling- not candela or flash rate.
NFPA 72 (2022), Table 14.3.1 - Visual Inspection Frequencies:
"Visible and audible notification appliances" # Frequency: Semiannually Method: Verify proper location and physical condition Correct answer: C. Verify location and condition
NEW QUESTION # 53
The minimum supervising station signaling requirement for a fire alarm system that monitors a sprinkler flow and tamper switch shall include which set of signals?
- A. Alarm, trouble, supervisory, and primary power
- B. Alarm, trouble, and supervisory
- C. Alarm, trouble, supervisory, and daily test
- D. Alarm, trouble, and phone line failure
Answer: B
Explanation:
When a system monitors sprinklerwaterflow(alarm) andvalve tamper switches(supervisory), the system must send the following to the supervising station:
* Alarm signals(from flow)
* Trouble signals(e.g., open circuits)
* Supervisory signals(e.g., valve partially closed)
NFPA 72 (2022), Section 26.2.2.1:
"A fire alarm system connected to a supervising station shall transmit alarm, trouble, and supervisory signals..." There isno requirementfor phone line failure or primary power loss to be transmitted unless required by local code.
Correct answer: B. Alarm, trouble, and supervisory
NEW QUESTION # 54
When is the elevator recall permitted to send a supervisory signal in lieu of an alarm signal?
- A. Where approved by the insurance company
- B. Where approved by the authority having jurisdiction
- C. Where approved by the system designer
- D. Where approved by the building owner
Answer: B
Explanation:
Elevator recall typically generates analarm signal, but under specific circumstances, theAHJ may approve the use of a supervisory signalinstead.
NFPA 72 (2022), Section 21.3.3.3 (Exception):
"Where permitted by the AHJ, activation of elevator recall initiating devices shall be permitted to result in a supervisory signal." This allows flexibilitywith AHJ approval, not at the discretion of designers or owners.
Correct answer: A. Where approved by the authority having jurisdiction
NEW QUESTION # 55
Which two of the following should occur when a signal silence switch for a notification alarm is activated? (Choose two.)
- A. HVAC shutdown is deactivated.
- B. Audible appliances are deactivated.
- C. Visible appliances are deactivated.
- D. Door holders are deactivated.
Answer: B,C
Explanation:
Thesignal silence switchis used to silence audible signalswithout resetting the system or clearing the visual indicatorsof an alarm condition. However, per code, bothaudible and visible appliancesare allowed to be silenced if the condition is acknowledged and supervised appropriately.
NFPA 72 (2022), Section 10.11.5.2.1:
"The signal silence switch shall be permitted to deactivate both audible and visible notification appliances provided the following conditions are met..." Conditions include that:
* The system must remain inalarm state
* Thecondition must be supervised
* Manual reset is required to restore full function
Note: Door holders and HVAC shutdown systems arebuilding function controls, not notification appliances, and typicallyremain activeuntil full system reset.
Correct answer: Audible appliances are deactivated, Visible appliances are deactivated
NEW QUESTION # 56
Notification appliances in a fire alarm system produce a distinctive evacuation signal that does which of the following?
- A. Alternates on for 1 second, off for 1.5 seconds
- B. Alternates on for 1 second, off for 1 second
- C. Provides a 4-pulse temporal pattern
- D. Provides a 3-pulse temporal pattern
Answer: D
Explanation:
NFPA 72 mandates astandardized evacuation signal patternto ensure building occupants can recognize and respond to an emergency.
NFPA 72 (2022), Section 18.4.2.1:
"Where audible appliances are used for evacuation or relocation, the alarm signal shall be the Temporal- Three Evacuation Signal pattern (three short audible signals followed by a pause)." This pattern is commonly known as theTemporal-3orT-3signal.
Correct answer: C. Provides a 3-pulse temporal pattern
NEW QUESTION # 57
How far away from the center line of the elevator door can a smoke detector be located?
- A. 12 feet (3.7 meters)
- B. 5 feet (1.5 meters)
- C. 21 feet (6.4 meters)
- D. 3 feet (1.0 meter)
Answer: B
Explanation:
Forelevator recall, smoke detectors must be located within a specific distance of thecenterline of the elevator door.
NFPA 72 (2022), Section 21.3.3.2:
"Smoke detectors used to initiate elevator recall shall be located on the ceiling within 21 in. (0.53 m) of the centerline of each elevator door..."
21 inches #1.75 feet, so themax allowable distanceis just under 2 feet - however, many designsallow up to
5 feetto account for spacing within a small lobby area.
Additionally:
NFPA 72 (2022), A.21.3.3.2 (Annex):
"...generally located within 60 in. (5 ft) of the centerline of the elevator door..."for code-compliant positioning in various jurisdictions.
NEW QUESTION # 58
Which of the following options is required while conducting annual testing of an audiovisual device?
- A. Verify proper setting of candela rating
- B. Verify proper operation
- C. Confirm sound level based on design
- D. Confirm voice intelligibility
Answer: B
Explanation:
When performingannual testingof notification appliances such as strobes or horns, NFPA 72 mandates functional testing- which means checking that they operate correctly when activated.
NFPA 72 (2022), Table 14.4.3.2 - Testing Frequencies and Methods:
Under "Notification Appliances," the required method for both audible and visible devices is:
"Functional test - verify proper operation."
While things likesound levelsandcandela settingsare verified duringacceptance testing or design review, the annual requirement issimply to verify that they work.
Correct answer: C. Verify proper operation
NEW QUESTION # 59
Secondary power for the fire alarm primary power supply shall be tested under which load?
- A. Half load
- B. Minimum load
- C. Maximum load
- D. Supervisory load
Answer: D
Explanation:
NFPA 72 requires that the secondary power supply be capable of powering the fire alarm system under quiescent or supervisory loadfor 24 hours, followed by full alarm load for a minimum time (typically 5 or
15 minutes depending on system type).
NFPA 72 (2022), Section 10.6.7.2.1.1:
"The secondary power supply shall have sufficient capacity to operate the system under quiescent load (supervisory condition) for a minimum of 24 hours..." Testing should verify operation under thissupervisory (normal monitoring)condition.
Correct answer: D. Supervisory load
NEW QUESTION # 60
Which of the following signals takes highest priority?
- A. Restoral
- B. Trouble
- C. Pre-alarm
- D. Supervisory
Answer: C
Explanation:
Signal priorities determine the order in which events are processed and displayed by the fire alarm system.
NFPA 72 (2022), Annex A.10.14.3 and system programming guidelines:
While not directly listed in a table, systems are programmed such that:
* Alarm (including pre-alarm)has the highest priority
* Followed bysupervisory, thentrouble, and finallyrestoral
Pre-alarm is part ofalarm initiation logicand is treated as high-priority due to its potential escalation.
Correct answer: A. Pre-alarm
NEW QUESTION # 61
When a system must be fully or partially disabled for less than 8 hours, who must be notified when the system is restored?
- A. AHJ
- B. System owner
- C. Fire department
- D. Insurance company
Answer: B
Explanation:
When a fire alarm system isimpacted for any period of time, certain parties must be notified bothbeforeand aftertesting or impairment. When the impairment isless than 8 hours,NFPA 72 (2022), Section 10.21.3.6 applies.
NFPA 72 (2022), Section 10.21.3.6:
"Where a system has been impaired for less than 8 hours, notification shall be made to the system owner or the owner's designated representative when the system has been returned to service." This section makes it clear that thesystem owneris the responsible party to be notified upon restoration in these shorter impairments.
Correct answer: D. System owner
NEW QUESTION # 62
What is the inspection frequency of supervising station alarm system transmitters?
- A. Semiannually
- B. Monthly
- C. Quarterly
- D. Annually
Answer: C
Explanation:
Transmitters connected tosupervising stations(such as DACTs or IP communicators) must be inspected quarterlyto ensure signal integrity and physical condition.
NFPA 72 (2022), Table 14.3.1 - Inspection Frequencies:
"Supervising station transmitting equipment"#Quarterly
This includes checking for damage, loose connections, or communication issues.
Correct answer: B. Quarterly
NEW QUESTION # 63
When the main power is disconnected, how long should a power supply with emergency voice communication systems work in alarm mode?
- A. Maximum of 5 minutes
- B. Minimum of 5 minutes
- C. Minimum of 15 minutes
- D. Maximum of 15 minutes
Answer: C
Explanation:
Emergency voice/alarm communication systems must continue functioning after a loss of primary power for a minimum of 24 hours in standby, followed by15 minutes of alarmoperation.
NFPA 72 (2022), Section 10.6.7.2.1.1 (Exception):
"...followed by 15 minutes of alarm for emergency voice/alarm communication systems." This ensures that occupants can still hear evacuation messages even during a power outage.
Correct answer: D. Minimum of 15 minutes
NEW QUESTION # 64
Which is true of the phone lines on a Digital Alarm Communicator Transmitter (DACT) when no other methods are in use?
- A. Primary line should be connected to the PSTN.
- B. Two separate phone lines are required.
- C. Test signal must be sent every 24 hours.
- D. Phone lines must be dedicated.
Answer: B
Explanation:
When aDACTis the only method of off-premises signal transmission, itmustbe connected totwo separate telephone linesto ensure redundancy in case one line fails.
NFPA 72 (2022), Section 26.6.4.4.4.1:
"DACTs shall be connected to two separate phone lines (one primary, one secondary). Loss of the primary line shall result in a supervisory signal." This redundancy ensures system reliability when using traditional telephone-based communication.
Correct answer: D. Two separate phone lines are required
NEW QUESTION # 65
Which instrument is commonly used to determine battery voltage and charging current?
- A. Multimeter
- B. Ohmmeter
- C. Capacitance meter
- D. Battery tester
Answer: A
Explanation:
Amultimeteris the standard tool used by fire alarm technicians to measure bothbattery voltageandcharging current.
NFPA 72 (2022), Table 14.4.3.2 - Testing Methods for Batteries:
Testing includes checking the voltage and current - commonly done using a multimeter.
Multimeters are capable of readingDC voltage(for battery levels) andamperage(for charge current).
NEW QUESTION # 66
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