Fire Alarm CH 2

Question 1

signaling line circuits monitor for integrity by?

Answer 1

polling or interrogation of circuit

Question 2

wiring between enclosures is not required to be monitored for integrity if the enclosures are less than 10 inches apart and the wiring is _________

Answer 2

installed in conduit

Question 3

initiating device circuits and notification appliance circuits monitor for integrity by?

Answer 3

a small current through the circuit

Question 4

list 3 examples of an installer who is “qualified and experienced” under the requirements of NFPA 72

Answer 4

Nicet certified
IMSA certified
Certified by state or local authority

Question 5

Opens and grounds on a fire alarm circuit will result in a _______ signal.

Answer 5

trouble

Question 6

if a system standby load is 350 milliampers and the alarm load is 1.100 amperes what is the required capacity of a battery used for a secondary power supply

Answer 6

10.19A

Question 7

secondary power supplies must supply power to protected premises fire alarm systems for a minimum of?

Answer 7

24 hours of standby power followed by 5 min of alarm

Question 8

the code requires the maximum normal operating temperatures for most fire alarm equipment to be between

Answer 8

32 and 120 degrees F

Question 9

notification appliances commonly us a ______ to prevent monitoring current to pass through the notification appliance circuitry>

Answer 9

blocking diode

Question 10

upon detection of a trouble condition, fire alarm systems controls must initiate a trouble signal within _________ seconds

Answer 10

200 seconds

Question 11

conductors returning to the control unit from the last field device on the circuit might indicate?

Answer 11

Class A

Question 12

which circuit class is considered as “fail-safe”?

Answer 12

class D

Question 13

the disconnecting means (branch circuit) for the primary power of a fire alarm system must be _____ in color

Answer 13

red

Question 14

Class ______ circuits are not required to be monitored for integrity

Answer 14

class E

Question 15

where an engine-driven generator is used to provide secondary power a minimum of ______ hours of batteries are required. why?

Answer 15

4 hours in case generator does not start

Question 16

Duct smoke detectors are sometimes permitted to cause a _________ signal in place of an alarm signal

Answer 16

supervisory

Question 17

all devices on signaling line circuits have ____________.

Answer 17

unique addresses

Question 18

secondary power supplies must supply power to an in -building fire emergency voice/alarm communications fare alarm system for a minimum of?

Answer 18

24 hours of standby followed by 15 min of alarm

Question 19

an emergency communication system can be used to warn occupants of a _____, _______, or _______>

Answer 19

fire
terrorist attack
tornado

Question 20

Fire alarm control equipment requires a smoke detector for protection when the controls are _______.

Answer 20

Located in an area that is not continuously occupied

Question 21

wiring between enclosures is not required to be monitored for integrity if the enclosures are less than _______ apart and the wiring is installed in conduit

Answer 21

10 inches

Question 22

section _______ of NFPA 72 requires all circuits to be monitored for integrity.

Answer 22

12.6

Question 23

why is t-tapping not permitted on initiating device circuits, notification appliance circuits, and class a signalling line circuits?

Answer 23

not monitored for integrity.

Question 24

a valve tamper switch, when actuated, will produce a ______ signal.

Answer 24

supervisory

Question 25

list three signals produced by a fire alarm system.

Answer 25

alarm - GTFO
supervisory - something is off normal
trouble - something is wrong with the wire

Question 26

alarm signals are indicative of a ______.

Answer 26

fire or other life threatening emergency.

Question 27

which of the following documentation must be provided to the authority having jurisdiction at the completion of a fire alarm installation

Answer 27

record of completion