Fire Alarm 2 Flashcards
According to NFPA 90A, HVAC systems of ? or ? require supply-side smoke detection.
a.
1,000 cfm / less
b.
1,000 cfm / greater
c.
2,000 cfm / less
d.
2,000 cfm / greater
D
Which of the following is an example of a smoke control function?
a.
Door unlocking
b.
Elevator recall
c.
Elevator shunt trip
d.
Stair pressurization
D
According to NFPA 90A, duct smoke detectors are required when the minimum airflow exceeds ? .
a.
500 cfm
b.
1,000 cfm
c.
1,500 cfm
d.
2,000 cfm
D
Where a “1” indicates a single tap of a code wheel, a “111-11111-11-1” signal from a street box generates what box number at the public fire dispatch center?
a.
1253
b.
2513
c.
3215
d.
3521
D
A public emergency alarm reporting system operates on a ? loop.
a.
50 mA
b.
100 mA
c.
150 mA
d.
200 mA
B
A digital alarm communicator system (DACS) requires a minimum of ? means of communication between the protected premises and the supervising station.
a.
1
b.
2
c.
3
d.
4
B
Which device, when actuated and interconnected to another similar device, will cause the other device to actuate?
a.
Heat detector
b.
Multiple-station alarm
c.
Single-station alarm
d.
Smoke detector
B
Actuation of multiple-station smoke alarms cannot cause actuation of ? .
a.
alarms in other dwellings
b.
other alarms within that building
c.
the building fire alarm system
d.
all of the above
D
Wall-mounted heat detectors must be mounted so the top of the detector is between ? and 12 inches from the ceiling.
a.
4”
b.
6”
c.
8”
d.
10”
A
What is the maximum number of unmonitored smoke alarms that can be interconnected?
a.
6
b.
12
c.
18
d.
24
B
Central station fire alarm systems are inspected, tested, and maintained ? .
a.
by an independent third party
b.
by the insurance interest
c.
by the owner
d.
under contract
D
What type of system requires inspections, tests, and maintenance to be provided under contract?
a.
Central station
b.
Proprietary supervising station
c.
Remote station
d.
All of the above
A
The three types of tests are ? .
a.
acceptance, performance, and functional
b.
acceptance, re-acceptance, and performance
c.
acceptance, re-acceptance, and periodic
d.
functional, initial, and re-acceptance
C
In most cases, a short on a Class B initiating device circuit causes a(n) ? .
a.
alarm
b.
trouble signal
c.
trouble signal but all devices operate
d.
none of the above
A