FA2 Flashcards
List three signals produced by a fire alarm system.
alarm, supervisory, trouble
Opens and grounds on a fire alarm circuit will result in a(n) ___ signal.
a. alarm b. guard’s tour
c. supervisory d. trouble
d. trouble
Alarm signals are indicative of a(n) _____.
a. fire or other life-threatening emergency
b. ground fault
c. loss of AC power
d. open circuit
a. fire or other life-threatening emergency
A valve temper switch, when actuated, will produce a(n) ____ signal.
a. alarm b. guard’s tour
c. supervisory d. trouble
c. supervisory
Duct smoke detectors are sometimes permitted ot cause a(n) ____ signal in place of an alarm signal.
a. guard’s tour b. MMS
c. supervisory d. trouble
c. supervisory
An emergency communication system (ECS) can be used to warn occupants of a _____.
a. fire b. terrorist attack
c. tornado d. all of the above
d. all of the above
Section ____ of the NFPA 72 requires all circuits to be monitored for integrity.
a. 10.17.1.1 b. 12.3
c. 12.6 d. 12.4
c. 12.6
Wiring between enclosures is NOT Required to be monitored for integrity if the enclosures are less than ___ apart and the wiring is ___.
a. 10’ / exposed
b. 20’ / exposed
c. 20’ / installed in conduit
d. 10’ / installed in conduit
c. 20’ / installed in conduit
Name the three types of fire alarm circuits.
initiating device, signaling line, notification appliance.
Initiating device circuits and notification appliance circuits monitor for integrity by ______.
a. a small current through the circuit
b. blocking diodes
c. device polling
d. interrogation
a. a small current through the circuit
Describe why T-tapping is NOT permitted on initiating device circuits, notification appliance circuits, and Class A signaling line circuits.
It can result in disconnected devices without indication of a trouble signal.
Signaling line circuits monitor for integrity by _____.
controls that are programmed.
Notification appliances commonly use a(n) ___ to prevent monitoring current to pass through the notification appliance circuitry.
a. band pass filter b. blocking diode
c. end-of-line capacitor d. end-of-line resistor
b. blocking diode
All devices on signaling line circuits have unique addresses. True or False
True
Which circuit class is considered as “fail safe”?
a. Class A b. Class B
c. Class C d. Class D
d. Class D