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2nd year > 2nd Year Final Review > Flashcards

2nd Year Final Review Flashcards

1
Q

Which of the following types of detectors is considered an active type detector?

a. capacitance sensor
b. audio sensor
c. break beam sensor
d. none of the above

A

c. break beam sensor

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2
Q

Define the term Dual Technology/Combination Detector.

A

sound and audio - both have to trip to alarm. It reduced false alarms.

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3
Q

When selecting glass break detectors, motion detectors, and door contacts for a security system, is it required that they be made by the panel manufacturer?

A

it’s preferred, but not always. Smart devices: Yes

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4
Q

How many sets of contacts are there on a DPDT relay? list them

A

2 sets 2C 2 N/O 2 N/C

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5
Q

Match each of the following types of protection to their definition:

a. specific area c. point-of entry
b. spot d. perimeter

___ emphasis placed on specific point which might allow entry or exit from a secure area.
___ provides protection of the perimeter area of a building, area or facility.
___ protects one specific object.
___ protects one specific location.

A

C. point of entry: emphasis placed on specific point which might allow entry or exit from a secure area.
D. perimeter: provides protection of the perimeter area of a building, area or facility.
B. spot: protects one specific object.
A. specific area: protects one specific location.

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6
Q

Match each of the glass types with their associated features:

a. tempered d. plexiglass
b. plate e. wired
c. laminated

___ breaks into large jagged pieces.
___ shatters into thousands of tine pieces.
___ used as a high security application.
___ made of plastic and snaps easily.
___ glass between two thin pieces of plastic film.

A

B. plate: breaks into large jagged pieces.
A. tempered: shatters into thousands of tine pieces.
E. wire: used as a high security application.
D. plexiglass: made of plastic and snaps easily.
C. laminated glass between two thin pieces of plastic film.

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7
Q

Match each of the system components with their associated features:

a. notification appliance
b. ionizing smoke detector
c. emergency voice/alarm communication
d. photoelectric smoke detector

___ radioactive material
___ uses reversed polarity in an alarm state to operate appliances.
___ pre-recorded or live messages
___ light obscuration

A

B. Ionizing smoke detector radioactive material
A. Notification appliance: uses reversed polarity in an alarm state to operate appliances.
C. Emergency voice/alarm communication: pre-recorded or live messages
D. Photoelectric smoke detector: light obscuration

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8
Q

Name the three most commonly used credential types.

A

Magstrip, Fingerprint, Proximity

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9
Q

What jack is used to seize the phone line attached to the dialer of a security system when an alarm is activated?

A

RJ-3X

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10
Q

When installing a glass break detector to monitor plexiglass, what type of detector should NOT be used?

A

Glass break - must use shock sensor.

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11
Q

What is the difference between a “duress code” and a “hold up alarm”?

A

Duress Code: Special signal with no siren or alarm. Most turn off at panel.
Hold up alarm: Button under a desk or foot level

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12
Q

Explain where the resistor is placed for both an open loop and closed loop door contact.

A

Open loop - parallel

Closed loop - Series E.O.L.

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13
Q

An earthquake is a potential cause for what kind of frequency that may cause problems for a security system?

A

Shock sensor - Seismic

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14
Q

What makes an access control system so beneficial and effective?

A

Restricts access without altercation, less expensive since you just change codes instead of all the locks, always know who’s in the building.

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15
Q

What type of access control card has memory?

A

Smart card

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16
Q

What type of access control credential is most difficult to duplicate?

A

Biometric

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17
Q

What term is used to describe when a biometric reader accepts an invalid biometric input?

A

false acceptance

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18
Q

How often should the following systems send an auto test signal to their central station?
Residential:
Commercial:

A

Residential: weekly
Commercial: daily

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19
Q

ADA requires that optical turnstiles be spaced at least how far apart to accommodate wheel chairs?

A

32”

20
Q

What are the terms used to describe the types of magnetic contacts normal state, and which is the most common?

A

N/O Closed loop - most common

N/C Open loop

21
Q

Where must a smoke detector be placed in an elevator lobby?

A

Within 21’ of the center

22
Q

Explain the difference between a control module and a relay module used in fire alarm systems.

A

Supervised and unsupervised
Control Module: To be activated, either manually or through panel programming, on a select zone or area of coverage basis.

Relay Module: Allows the dry contact to be activated, either manually or through panel programming, on a select basis.

23
Q

When installing a smoke/heat detector on a wall, the top of the device shall be how far from the ceiling? Why?

A

4-12”. Smoke “curves”

24
Q

What device is used for two-way communication to the FCC?

A

fire phone FFT

25
Q

Duct smoke detectors are permitted to generate what two types of signals?

A

Alarm and supervisory

26
Q

What is the main difference between a Central Station and a Proprietary Supervising Station?

A

Central: controlled and operated by a person, firm, or corporation done outside of the site.
Proprietary: “Same premises” Owned by a company and supervising station personnel in attendance at all times take action in response to signals

27
Q

What NFPA volume and section covers power limited fire alarm wiring?

A

70 Section 760

28
Q

A fire alarm system dialer has what requirements for the communication pathways connected to that dialer?

A

RJ-3X - Two lines - one dedicated and one for the RJ-31X

29
Q

Control relays and modules must be installed within ____ from the equipment they are controlling.

A

3’

30
Q

Name three factors that may pose a problem for a duct detector.

A

vibration, dust, humidity, temp, moisture

31
Q

In a new construction home, name two areas where a smoke detector is required.

A

each bedroom, adjacent to bedroom, every floor

32
Q

List three circuits that you are not allowed to combine with power limited fire alarm.

A

audio, lighting, Power Class 1, non-limited power

33
Q

What are the requirements for visual notification devices in a corridor?

A

15’ end of hall, no more than 100’ apart

34
Q

List the alternate names for the following NFPA volumes:
70 72
99 100

A

70 NEC 72 Fire alarm code

99 Health Care 100 Life safety

35
Q

List examples of the AHJ.

A

Fire Marshall, Inspector, Architect

36
Q

Name and define the three most common types of alarm systems.

A

Local - (burglary, smoke) when activated sets off a bell, siren/and or a strobe light outside your home. Authorities are not notified unless someone hears the alarm and calls the police
Supervisory - indicates that a portion of the building’s fire protection system has been disabled or that a lower priority initiating device has been triggered (such as a duct smoke detector)
Central - is monitored by an alarm company 24/7; they then notify your policy department if it is activated

37
Q

Describe why instructions for installing a roller plunger contact calls for it to be installed on the hinge side of a door.

A

If it becomes warped or there is “play” in the door, it still can be in contact/break distance, it likely won’t get painted over, and appearance is also an issue - wear marks

38
Q

What are the three most likely points of entry for a burglar (list in or of highest likely)

A

Front door, first floor window, back door

39
Q

What are the three most common types of fire alarm circuits and describe their operation.

A

IDC - carries signals from the input devices to the panel
SLC - carries signals in the form of data between the panel and the input and output devices
NAC - carries signals and power from the panel to the fire horns, speakers, and strobes, causing the devices to make noise and flash lights, telling the occupants of the alarm

40
Q

Describe the term “fail safe” and explain why it is important for fire control functions.

A

A fail-safe is a device or practice that, in the event of a specific type of failure, responds or results in a way that will cause no harm, or at least minimizes harm, to other devices or to personnel. If a building catches fire or the power goes out, fail-safe systems would unlock doors to ensure quick escape and allow firefighters inside

41
Q

What scales are used to measure sound pressure level and light intensity of audio visual devices?

A

dba and candela

42
Q

Why does a fire alarm IDC circuit monitor for grounds and opens but not short circuits?

A

It looks for resistance at EOL - short = alarm. Looks for trouble on panel. The IDC circuits look for alarm and supervisory signals from pull stations, smoke and heat detectors, waterflow switches, tamper switches, etc.

43
Q

What are Fire Command Centers used for and what equipment can be located in that facility?

A

Main communication hub during events.
security, ff phone, fire panel, elevator panel, emergency voice/alarm control unit, water/sprinkler valve control panels, controls for locking/unlocking doors

44
Q

List the two types of wiring methods for fire alarm circuit survivability.

A

Mineral Insulation - MI

Circuit Integrity - CI

45
Q

What is the difference between public signaling mode and private signaling mode?

A

Public is longer than a minute: 15db ambiant, 5db max

Private is 10db ambiant, 5db max

46
Q

Define elevator shunt trip.

A

Immediately stops elevators before water from the elevator machine room or hoist sprinklers affect the brakes and electrical equipment.

2nd year (46 decks)

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