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NEW QUESTION # 20
What must be done if the frequency of sensitivity testing is extended to 5 years?
- A. Records of serial numbers shall be maintained.
- B. Detectors must be located in the same area.
- C. Detectors must be from the same manufacturer.
- D. Records of nuisance alarms shall be maintained.
Answer: D
Explanation:
Normally, smoke detector sensitivity testing is requiredevery two years, butNFPA 72 allows extension up to five yearsif thedetectors have not experienced frequent nuisance alarmsand accuraterecords of performanceare maintained.
NFPA 72 (2022), Section 14.4.4.3.2:
"Where detectors are cleaned and maintained and where records of nuisance alarms and changes in detector locations are kept, the sensitivity testing interval shall be permitted to be extended to 5 years." Keeping a log of nuisance alarms helps assess the reliability of the detectors over time.
Correct answer: C. Records of nuisance alarms shall be maintained
NEW QUESTION # 21
In addition to 10% of devices not affected, what else must be tested when site-specific software is changed?
- A. 10% of devices affected
- B. 50% of devices affected
- C. 25% of devices affected
- D. 100% of devices affected
Answer: D
Explanation:
Whensite-specific software(such as logic for fire alarm control panels) is changed,100% of the devices affectedby that change must be tested to confirm correct operation. Also,10% of unaffected devicesmust be tested as a safeguard.
NFPA 72 (2022), Section 14.4.2.2.4:
"When system software is modified, 100% of the affected devices or functions and 10% of the nonaffected devices or functions shall be tested." This ensures that updates don't unintentionally compromise unrelated areas of the system.
Correct answer: D. 100% of devices affected
NEW QUESTION # 22
What is the interval of a trouble signal test for retransmission to an off-premises location?
- A. Annually
- B. Semiannually
- C. Weekly
- D. Monthly
Answer: A
Explanation:
NFPA 72 requires annual testing to ensuretrouble signalsare correctly transmitted to the off-premises monitoring location (e.g., central station).
NFPA 72 (2022), Table 14.4.3.2 - Testing Frequencies and Methods:
Under "Off-Premises Transmission Equipment,"trouble signalsare testedannually.
This ensures that the system will properly report malfunctions.
Correct answer: D. Annually
NEW QUESTION # 23
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. 1 hour
- B. 5 minutes
- C. 24 hours
- D. 10 minutes
Answer: D
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 # 24
Inspection records for all systems shall be kept for which length of time?
- A. 6 months
- B. Until AHJ reviews records and 1 year
- C. 5 years
- D. Until the next test and 1 year
Answer: D
Explanation:
NFPA 72 outlines theretention period for recordsof inspections and testing in Section14.6.3.1. These records are important for verification during audits or when reviewing system maintenance history.
NFPA 72 (2022), Section 14.6.3.1:
"Records shall be retained for a period of one year after the next test and until the next test is performed." This means records must be keptuntil the next test happensand for1 year after that, not just a fixed calendar period.
Correct answer: D. Until the next test and 1 year
NEW QUESTION # 25
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. Door holders are deactivated.
- D. Visible appliances are deactivated.
Answer: B,D
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 # 26
How often are manual fire alarm boxes inspected?
- A. Annually
- B. Semiannually
- C. Monthly
- D. Quarterly
Answer: C
Explanation:
Manual fire alarm boxes (pull stations) must bevisually inspected monthlyto ensure accessibility, visibility, and no physical damage.
NFPA 72 (2022), Table 14.3.1 - Inspection Frequencies:
"Manual fire alarm boxes"#Monthly
The inspection verifies the handle is not blocked and the device is clearly labeled.
Correct answer: A. Monthly
NEW QUESTION # 27
Records of inspections, testing, and maintenance shall be provided in accordance with which section of NFPA 72?
- A. 7.8.2
- B. 7.6.6
- C. 14.6.3
- D. 10.5.3
Answer: C
Explanation:
This is a documentation requirement, and it's found inChapter 14of NFPA 72, which deals withInspection, Testing, and Maintenance.
NFPA 72 (2022), Section 14.6.3.1:
"Records shall be retained for a period of one year after the next test and until the next test is performed.
Records shall be made available to the authority having jurisdiction upon request." Section14.6.3lays out theformat, retention, and content requirementsfor inspection, testing, and maintenance records.
Correct answer: D. 14.6.3
Tip: For questions involvingrecordkeeping, head straight toChapter 14, especially section14.6.
NEW QUESTION # 28
A disconnection of the primary phone line shall cause which of the following events to occur?
- A. Activation of notification appliance
- B. Local annunciation only
- C. Supervisory condition
- D. Notification via secondary phone line
Answer: C
Explanation:
Fire alarm systems that communicate via telephone lines are required to monitor those lines for disconnection.
If theprimary line fails, it must be reported as asupervisory condition, and the system will attempt communication via thesecondary line.
NFPA 72 (2022), Section 26.6.4.4.4.1:
"A single communications technology shall be monitored for integrity. Loss of the supervising line shall result in a supervisory signal..." So, if theprimary phone line is disconnected, the correct system response is to issue asupervisory signal, not a general alarm or just a local alert.
Correct answer: D. Supervisory condition
NEW QUESTION # 29
The flash rate of visible notification appliances shall be a minimum of how many flashes per second?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: A
Explanation:
Visible notification appliances (strobes) must flash at aminimum rate of one flash per secondto meet visibility and perceptibility requirements.
NFPA 72 (2022), Section 18.5.3.4.1:
"The flash rate shall be not less than 1 flash per second and not more than 2 flashes per second." Correct answer: A. 1
NEW QUESTION # 30
According to NFPA 72, manual fire alarm boxes shall be located within which distance of each exit doorway on each floor?
- A. 6 feet (2.0 meters)
- B. 33 feet (10.0 meters)
- C. 16 feet (5.0 meters)
- D. 5 feet (1.5 meters)
Answer: D
Explanation:
Manual fire alarm boxes (pull stations) are required to be easily accessible near exits so that occupants can quickly initiate an alarm when leaving the area. The specific distance requirement is found in:
NFPA 72 (2022), Section 17.14.6.3:
"Manual fire alarm boxes shall be located within 5 ft (1.5 m) of each exit doorway on each floor." So thecorrect distance is 5 feet, not 33 feet. That makes the correct answer:
Correct answer: A. 5 feet (1.5 meters)
NEW QUESTION # 31
How is a projected beam detector inspected?
- A. Check for obstruction
- B. Remote test switch
- C. Introduce smoke
- D. Use an optical filter
Answer: A
Explanation:
For inspection purposes (not testing), projected beam detectors arevisually checkedforobstructions, alignment issues, and cleanlinessof lenses.
NFPA 72 (2022), Table 14.3.1 - Inspection Frequencies:
"Projected beam smoke detectors" # Inspect quarterly
Method: Check for obstruction, alignment, cleanliness
Testing uses an optical filter, butinspectionis visual.
Correct answer: A. Check for obstruction
NEW QUESTION # 32
After successful completion of an inspection, who shall be responsible for maintaining the permanent records?
- A. AHJ
- B. Fire marshal
- C. Owner
- D. Alarm contractor
Answer: C
Explanation:
NFPA 72 assigns theresponsibility for maintaining inspection and testing recordsto the owner or their designated representative. This ensures records are available when needed by the AHJ or for future inspections.
NFPA 72 (2022), Section 14.6.1:
"The property or building owner or the owner's designated representative shall be responsible for the inspection, testing, and maintenance of the system and for maintaining the records." This responsibility cannot be offloaded to the contractor or fire marshal unless formally designated by the owner.
Correct answer: D. Owner
NEW QUESTION # 33
Which NFPA standard determines the testing of a carbon monoxide device or system?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: A
Explanation:
NFPA 72provides the requirements forinstallation, testing, and maintenanceofcarbon monoxide detection systems. This includes required signals, testing intervals, and integration with fire alarm control units.
NFPA 72 (2022), Chapter 29 - Single- and Multiple-Station Alarms and Household Fire Alarm Systems:
Also coversCO detection and testing proceduresper Section 29.10.
NFPA 720(the former CO detection standard) was integrated into NFPA 72 in recent editions.
Correct answer: C. NFPA 72
NEW QUESTION # 34
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. 105 dBA
- B. 110 dBA
- C. 115 dBA
- D. 100 dBA
Answer: A
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 # 35
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 4 minutes of alarm
- B. 24 hours in the normal condition followed by 10 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 9 minutes of alarm
Answer: B
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 # 36
Which two of the following are needed to perform a periodic test of a projected beam type smoke detector? (Choose two.)
- A. Introducing smoke
- B. Blocking the transmitter
- C. Using a listed test switch
- D. Using an optical filter
Answer: C,D
Explanation:
Projected beam smoke detectors are testednot with actual smoke, but by simulating obscuration usinglisted toolssuch as atest switchoroptical filter.
NFPA 72 (2022), Section 14.4.2.2.6.2:
"Projected beam-type smoke detectors shall be tested by introducing an obscuration in the beam path using an optical density filter or a method approved by the manufacturer." Some systems includelisted test switchesfor functional checks without disrupting alignment.
Correct answer: Using a listed test switch, Using an optical filter
NEW QUESTION # 37
How is a lead-acid battery inspected?
- A. By verifying the charging circuit
- B. By verifying specific gravity
- C. By checking for damage
- D. By checking voltage
Answer: B
Explanation:
Forsealed lead-acid batteries, NFPA 72 specifies that their condition be verified by checkingspecific gravity
, which indicates battery charge status and health.
NFPA 72 (2022), Table 14.4.3.2 - Testing Methods:
Lead-acid batteries shall be tested semiannually by measuring specific gravity.
If batteries are sealed and specific gravity cannot be tested, voltage and visual checks are used instead.
Correct answer: C. By verifying specific gravity
NEW QUESTION # 38
Load testing of the control unit's VRLA batteries reveals that they must be replaced. Which two of the following are requirements for the replacement of VRLA batteries? (Choose two.)
- A. Batteries shall be marked with the month and year of manufacture.
- B. Batteries shall be the same make and model as those being replaced.
- C. Batteries shall be listed by a nationally recognized testing laboratory.
- D. Batteries shall be approved by the authority having jurisdiction.
Answer: A,C
Explanation:
Replacement batteries used in fire alarm systems must meet strict safety and documentation requirements:
NFPA 72 (2022), Section 10.6.10.1.2:
"Batteries shall be marked with the month and year of manufacture."
NFPA 72 (2022), Section 10.6.10.2:
"Batteries shall be listed for the intended purpose by a nationally recognized testing laboratory (NRTL)." There isno requirementthat replacement batteries must be the same make/model, though compatibility must be ensured.
Correct answers:
* Batteries shall be listed by a nationally recognized testing laboratory
* Batteries shall be marked with the month and year of manufacture
NEW QUESTION # 39
What is the maximum extended interval allowed for equipment to get inspected?
- A. 12 months
- B. 3 months
- C. 6 months
- D. 18 months
Answer: A
Explanation:
Inspection intervals are detailed inNFPA 72, Table 14.3.1, which outlines the maximum intervals for various components. Most fire alarm system components require inspectionat least annually, which equals12 months
.
NFPA 72 (2022), Table 14.3.1 - Frequency of Inspection Tasks:
You'll see that the default maximum inspection interval for initiating devices, control equipment, and notification appliances is12 months.
Unless specifically stated otherwise (e.g., by manufacturer instructions or performance-based design), you cannot exceed that.
Correct answer: C. 12 months
NEW QUESTION # 40
Which NFPA standard regulates how to perform the test of engine driven generator?
- A. NFPA 101
- B. NFPA 70
- C. NFPA 72
- D. NFPA 110
Answer: D
Explanation:
Engine-driven generators used for emergency power arenot governed directly by NFPA 72. Instead, their installation and testing requirements are found in:
NFPA 110 - Standard for Emergency and Standby Power Systems
NFPA 110 (2022), Chapter 8details howengine-driven generatorsmust be tested, including runtime, load testing, and maintenance intervals.
NFPA 72 references NFPA 110whenever standby/emergency power is used for fire alarm systems.
Correct answer: D. NFPA 110
NEW QUESTION # 41
Which three of the following test methods are used to ensure that the smoke detectors are within their sensitivity range? (Choose three.)
- A. Listed control equipment arranged for testing
- B. AHJ approved calibrated test
- C. Test approved by the engineer
- D. Manufacturer's calibrated sensitivity test instrument
Answer: A,B,D
Explanation:
To verify that smoke detectors are operating within their listed sensitivity range, NFPA 72 provides three approved testing methods. These ensure proper functionality and compliance with safety requirements.
NFPA 72 (2022), Section 14.4.4.3.1:
"Sensitivity shall be checked using any of the following methods:
(1) Calibrated test method approved by the authority having jurisdiction (2) Listed control equipment arranged for the purpose (3) Calibrated sensitivity test instrument of the smoke detector manufacturer" The option "test approved by the engineer" isnot listedamong the approved sensitivity test methods in NFPA
72, and therefore is not acceptable for compliance.
NEW QUESTION # 42
Which is true of the phone lines on a Digital Alarm Communicator Transmitter (DACT) when no other methods are in use?
- A. Phone lines must be dedicated.
- B. Primary line should be connected to the PSTN.
- C. Two separate phone lines are required.
- D. Test signal must be sent every 24 hours.
Answer: C
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 # 43
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. 8.0 feet (2.4 meters)
- C. 5.0 feet (1.5 meters)
- D. 2.5 feet (0.7 meter)
Answer: C
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 # 44
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