FST Fire Alarm Systems 2

Question 1

Which NFPA standard governs the installation of fire alarm and signaling systems?

Accepted Answer

NFPA 72

Answer

NFPA 72, the National Fire Alarm and Signaling Code, is the primary standard governing the installation, inspection, testing, and maintenance of fire alarm systems.

Question 2

A Class A initiating device circuit differs from a Class B circuit primarily because Class A:

Accepted Answer

Provides a trouble signal on open circuit but still operates

Answer

Class A circuits are wired in a loop that returns to the panel, so a single open fault still allows devices on the other side to operate and generates a trouble signal.

Question 3

What is the maximum allowable sound pressure level for a fire alarm audible notification appliance in a sleeping area per NFPA 72?

Accepted Answer

110 dB(A)

Answer

NFPA 72 caps audible appliances at 110 dB(A) measured at the pillow to protect hearing while still providing effective wake-up signals.

Question 4

A duct smoke detector is required to perform which primary function?

Accepted Answer

Shut down HVAC equipment to prevent smoke recirculation

Answer

Duct smoke detectors are primarily installed to shut down air-handling units and prevent smoke from spreading through ductwork to other areas.

Question 5

During a walk test of a fire alarm system, an inspector activates each device individually. What is being verified?

Accepted Answer

That each device sends a unique point identification to the panel

Answer

A walk test confirms that each initiating device is properly mapped and transmits its unique address or zone ID to the fire alarm control panel.

(FST) Fire Safety Technician Certification Practice Test

(FST) Fire Safety Technician Certification Practice Test

FST Fire Alarm Systems 2