S95 Fire Alarm System Operation 5

Question 1

In a fire alarm system, the term 'alarm verification' refers to a feature that:

Accepted Answer

Introduces a time delay to re-sample detector input before transmitting an alarm signal

Answer

Alarm verification temporarily clears the initiating device input and re-evaluates it to reduce nuisance alarms caused by transient conditions.

Question 2

Which type of occupancy is MOST likely to require a voice evacuation system rather than audible tone-only notification?

Accepted Answer

High-rise buildings above 75 feet in height

Answer

High-rise buildings typically require voice/alarm communication systems (VACS) to provide specific evacuation instructions to occupants on each floor.

Question 3

A photoelectric smoke detector operates on which principle?

Accepted Answer

Interruption or scattering of a light beam by smoke particles

Answer

Photoelectric detectors use a light source and sensor; smoke particles scatter light onto the sensor, triggering an alarm.

Question 4

A supervisory signal from a sprinkler system pressure switch would MOST likely indicate:

Accepted Answer

Air or water pressure in the system has deviated from normal operating range

Answer

A pressure supervisory switch monitors system pressure and signals an off-normal condition when pressure falls outside acceptable limits, indicating a potential leak or tampering.

Question 5

When performing a fire alarm system inspection, the supervisor notices a smoke detector has a painted-over grille. The CORRECT action is to:

Accepted Answer

Tag the detector as failed and replace it, since paint compromises sensing chamber entry

Answer

Paint over a detector grille blocks airflow into the sensing chamber, rendering the detector non-functional; it must be replaced.

(S95) Supervision of Fire Alarm System Practice Test

(S95) Supervision of Fire Alarm System Practice Test

S95 Fire Alarm System Operation 5