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Level 4 Electrical > Fire Alarms > Flashcards

Fire Alarms Flashcards

1
Q

In an addressable system, initiating devices are connected to the FACP through a line referred to as the what?

A

DCL (Data Communication Link)

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2
Q

In an addressable system, modules are connected to the FACP through a line referred to as a

A

DCL or SLC

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3
Q

In a conventional fire alarm circuit, what is the name of the small current that flows to indicate circuit integrity under normal conditions?

A

Supervisory

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4
Q

2 types of Fire Alarm Stages

A

Single Stage and Two Stage

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5
Q

Relay modules are used for the control of what devices/circuits?

A

ancillary equipment

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6
Q

Primary purpose of fire alarm systems

A

safety

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7
Q

Isolation modules are used to

A

isolate a portion of the DCL

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8
Q

4 conditions of a fire alarm system

A

Normal
Trouble
Alarm
Supervisory

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9
Q

Monitor modules are used to

A

interconnect a conventional circuit device

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10
Q

In a conventional fire alarm system, what device is used to provide circuit supervision?

A

EOL resistors

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11
Q

Conventional initiating circuits end with?

A

EOL resistors

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12
Q

Conventional monitoring circuits end with

A

EOL resistor

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13
Q

Does a conventional fire alarm system provide identification of the specific device that initiated the alarm?

A

No

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14
Q

Conventional NAC circuits end with

A

EOL resistor

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15
Q

In an addressable fire alarm system, which devices are polarity sensitive

A

smoke detectors

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16
Q

An SLC ends with an end of line resistor. True or false

A

False

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17
Q

Addressable NAC circuits end with end of line resistors. True or false

A

True

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18
Q

What signal conditions is caused in a single stage fire alarm system when an initiating device is activated?

A

Audible evacuation alarm

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19
Q

What signal conditions is caused in a two stage fire alarm system when an initiating device is activated?

A

Audible alert signal

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20
Q

When wiring an SLC. what terminals do you leave the FACP on?

A

B’s to A’s, Negatives

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21
Q

3 sprinkler tree devices and their condition

A

Water flow- Alarm
Low Pressure- Supervisory
Gate Valve tamper switch- Supervisory

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22
Q

Low water pressure will cause what condition to be displayed?

A

Supervisory

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23
Q

If water flows through the sprinkler system, what condition will be displayed?

A

Alarm

24
Q

In an addressable system, if a device is addressed incorrectly, what condition will be displayed?

A

Trouble

25
Q

In a conventional fire alarm system, which devices are polarity sensitive?

A

Smoke detector
Notification devices

26
Q

A trouble condition will reset automatically once the issue had been corrected. True or false

A

True

27
Q

What type of addressable module can be used to de-energize an ancillary device?

A

Control/relay

28
Q

What type of addressable module can be used to interconnect a conventional circuit/device to an addressable fire alarm system?

A

Monitor Module

29
Q

Four stages of a Fire

A

Incipient stage
Smoldering
Flame Stage
Heat

30
Q

Class A Fires

A

wood, paper

31
Q

Class B Fires

A

flammable liquids and gases

32
Q

Class C Fires

A

Electrical

33
Q

Class D fires

A

Combustible metals

34
Q

Class K fires

A

cooking

35
Q

3 main components in a fire triangle

A

Heat
Oxygen
Fuel
Also Chain reaction

36
Q

Alarm and supervisory require auto reset or manual?

A

Manual

37
Q

3 types of fire alarm systems

A

Conventional
Multiplex
Addressable \

38
Q

SLC means what?

A

Signaling Line circuit

39
Q

DCL does not end with a resistor. True or false?

A

True

40
Q

2 Types of smoke detectors are:

A

Rate of rise-15 F per minute increase in area
Fixed temperature- activates when temp hits a certain level

41
Q

Notification appliance circuits wired from either conventional or addressable systems terminate at?

A

End of line devices

42
Q

Low pressure Switch is wired

A

NC, C

43
Q

Water flow alarm switch is wired

A

NO C

44
Q

Gate Valve tamper is wired

A

NC C

45
Q

L on FDM are what numbers

A

6, 7

46
Q

H on FDM are what numbers

A

8, 9

47
Q

Photoelectric detectors detect?

A

White or grey smoke

48
Q

Ionization detectors detect?

A

Gas

49
Q

Tolerance Percent on
Gold
Silver
No colour

A

Gold is 5%
Silver is 10%
No color is 20%

50
Q

2 Primary types of notification

A

Audible
Visible

51
Q

Does a Class A circuit have an end of line resistor?

A

No

52
Q

What is a trouble signal?

A

audible and visual signal from failure of equipment

53
Q

A supervisory current happens when the Water Flow Gate valve slightly closes or opens?

A

Closes

53
Q

Bad Beer Rots Our Young Guts But Vodka Goes Well

A

Black
Brown
Red
Orange
Yellow
Green
Blue
Violet
Gray
White

54
Q

Main components of a fire alarm system

A

Control panel
Alarm initiating devices
Notification appliances
Power supplies
Communication/monitoring
Ancillary devices

55
Q

3 ancillary devices

A

Door magnets
HVAC shutdown
Elevator

56
Q

A standard audible alarm signal

A

Temporal 3

Level 4 Electrical (6 decks)

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