S95 Inspection and Testing Procedures 3

Question 1

Which test method is used to verify the correct operation of a carbon monoxide detector in a fire alarm system?

Accepted Answer

Functional test with listed CO test gas

Answer

CO detectors in fire alarm systems are tested using listed CO test gas to simulate actual CO exposure per the manufacturer's instructions.

Question 2

When inspecting a fire alarm control panel (FACP), which of the following conditions requires immediate corrective action?

Accepted Answer

A ground fault indication on the alarm circuit

Answer

A ground fault on an alarm circuit can prevent alarm signals from propagating and must be corrected immediately to restore system integrity.

Question 3

How should a technician test a beam-type smoke detector with a fixed threshold?

Accepted Answer

Reduce the beam signal by the required amount using a calibrated filter or by blocking the beam partially

Answer

Beam detectors are tested by introducing a calibrated test filter that reduces beam intensity to the alarm threshold level.

Question 4

According to NFPA 72, primary power to a fire alarm system must be tested to verify it operates for at least:

Accepted Answer

24 hours on standby then 5 minutes of alarm

Answer

NFPA 72 requires the system battery capacity to support 24 hours of standby followed by 5 minutes of alarm operation.

Question 5

A technician conducting a pathway survivability test on a fire alarm circuit disconnects one end of a Class B circuit. What is the expected result?

Accepted Answer

A trouble indication on the FACP

Answer

Class B circuits do not have redundant return paths; an open fault produces a trouble signal at the FACP.

(S95) Supervision of Fire Alarm System Practice Test