CAT Knowledge and Skills 4

Question 1

Which NFPA standard specifically addresses the installation, testing, and maintenance of fire alarm systems?

Accepted Answer

NFPA 72

Answer

NFPA 72, the National Fire Alarm and Signaling Code, governs all aspects of fire alarm system design, installation, and testing.

Question 2

A dual-technology motion detector combines PIR with which other sensing technology to reduce false alarms?

Accepted Answer

Microwave (MW)

Answer

Dual-tech detectors require both PIR and microwave sensors to trigger simultaneously, greatly reducing false alarms from heat sources or air movement alone.

Question 3

What does 'supervised' mean when applied to a smoke detector power circuit?

Accepted Answer

The panel monitors the circuit for open or short conditions and generates a trouble signal if found

Answer

Supervision means the control panel continuously checks the integrity of the wiring and detects faults that would prevent proper alarm signaling.

Question 4

Which type of detection is a rate-of-rise heat detector designed to respond to?

Accepted Answer

A rapid increase in temperature exceeding a set rate per minute

Answer

Rate-of-rise detectors trigger when temperature increases faster than a specified rate (typically 12–15°F per minute), catching fast-developing fires earlier.

Question 5

When a control panel displays a 'ground fault' trouble condition, what does this indicate?

Accepted Answer

An unintended electrical connection between a circuit conductor and earth ground

Answer

A ground fault occurs when insulation breaks down or wiring touches a grounded surface, potentially causing equipment damage or nuisance alarms.

(CAT) Certified Alarm Technician Practice Test

(CAT) Certified Alarm Technician Practice Test

CAT Knowledge and Skills 4