S95 Fire Alarm System Components 5

Question 1

How does an aspirating smoke detection (ASD) system detect smoke?

Accepted Answer

Drawing air samples through a pipe network to a central detection unit

Answer

Using thermocouples to sense heat from combustion gases

Answer

Projecting a laser beam across an open space to sense obscuration

Answer

Analyzing video footage for visible smoke or flame

Question 2

Which detector type is most appropriate for protecting large open spaces such as warehouses, atriums, or aircraft hangars?

Accepted Answer

Linear beam smoke detector

Answer

Spot-type photoelectric detector

Answer

Spot-type ionization detector

Answer

Fixed-temperature heat detector

Question 3

In an addressable fire alarm system, what is the purpose of a relay output (control) module?

Accepted Answer

To control ancillary equipment such as door holders, dampers, and fan shutdown

Answer

To detect smoke within air handling ductwork

Answer

To provide addressable capability to conventional initiating devices

Answer

To monitor the tamper status of sprinkler valves

Question 4

In an addressable fire alarm system, what is the primary function of a monitor module?

Accepted Answer

To supervise and report the status of conventional non-addressable devices on the SLC

Answer

To display real-time alarm conditions on the FACP LCD screen

Answer

To control the power output to notification appliance circuits

Answer

To measure and calibrate detector sensitivity during annual testing

Question 5

Carbon monoxide (CO) detectors installed as part of a fire alarm system must be:

Accepted Answer

Listed for use with the specific fire alarm control panel to which they are connected

Answer

Listed for residential use and UL 217 compliant

Answer

Installed only in attached garages and boiler rooms per local codes

Answer

Classified as notification appliances under NFPA 72

Question 6

What is the purpose of an elevator recall interface in a fire alarm system?

Accepted Answer

To return elevators automatically to a designated floor during a fire alarm

Answer

To prevent elevator use entirely when an alarm activates on any floor

Answer

To control elevator cab speed to safe levels during emergency operation

Answer

To provide floor-to-floor voice communication through the elevator intercom

Question 7

What is the primary benefit of a multi-criteria (multi-sensor) fire detector compared to a single-technology detector?

Accepted Answer

It uses two or more sensing technologies to significantly reduce nuisance false alarms

Answer

It can only be used in commercial kitchen hood suppression systems

Answer

It must be connected to a dedicated, isolated circuit per NFPA 72

Answer

It is approved only for outdoor applications per UL standards