CFI Fire Alarm & Detection Systems 2

Question 1

Under NFPA 72, what is the maximum allowable spacing between smoke detectors on a smooth ceiling with no obstructions?

Accepted Answer

50 feet

Answer

NFPA 72 allows smoke detector spacing up to 50 feet between detectors on smooth ceilings.

Question 2

A heat detector rated at 135°F (57°C) is classified as which type?

Accepted Answer

Fixed-temperature only

Answer

A detector rated at a specific temperature threshold (135°F) without a rate-of-rise element is a fixed-temperature detector.

Question 3

Which NFPA standard governs the installation of fire alarm systems in the United States?

Accepted Answer

NFPA 72

Answer

NFPA 72, the National Fire Alarm and Signaling Code, governs the installation, inspection, testing, and maintenance of fire alarm systems.

Question 4

What is the primary purpose of a 'supervisory signal' in a fire alarm system?

Accepted Answer

Alert personnel to an off-normal condition in a fire protection system

Answer

A supervisory signal indicates that a fire protection system or component (such as a sprinkler control valve) is in an off-normal condition.

Question 5

Beam-type smoke detectors are best suited for protecting which type of area?

Accepted Answer

Large open areas with high ceilings such as atriums or warehouses

Answer

Projected beam smoke detectors are ideal for large open spaces with high ceilings where installing point-type detectors would be impractical.

(CFI) Certified Fire Inspector Practice Test