2nd Year Final Review Flashcards
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
c. break beam sensor
Define the term Dual Technology/Combination Detector.
sound and audio - both have to trip to alarm. It reduced false alarms.
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?
it’s preferred, but not always. Smart devices: Yes
How many sets of contacts are there on a DPDT relay? list them
2 sets 2C 2 N/O 2 N/C
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.
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.
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.
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.
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
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
Name the three most commonly used credential types.
Magstrip, Fingerprint, Proximity
What jack is used to seize the phone line attached to the dialer of a security system when an alarm is activated?
RJ-3X
When installing a glass break detector to monitor plexiglass, what type of detector should NOT be used?
Glass break - must use shock sensor.
What is the difference between a “duress code” and a “hold up alarm”?
Duress Code: Special signal with no siren or alarm. Most turn off at panel.
Hold up alarm: Button under a desk or foot level
Explain where the resistor is placed for both an open loop and closed loop door contact.
Open loop - parallel
Closed loop - Series E.O.L.
An earthquake is a potential cause for what kind of frequency that may cause problems for a security system?
Shock sensor - Seismic
What makes an access control system so beneficial and effective?
Restricts access without altercation, less expensive since you just change codes instead of all the locks, always know who’s in the building.
What type of access control card has memory?
Smart card
What type of access control credential is most difficult to duplicate?
Biometric
What term is used to describe when a biometric reader accepts an invalid biometric input?
false acceptance
How often should the following systems send an auto test signal to their central station?
Residential:
Commercial:
Residential: weekly
Commercial: daily
ADA requires that optical turnstiles be spaced at least how far apart to accommodate wheel chairs?
32”
What are the terms used to describe the types of magnetic contacts normal state, and which is the most common?
N/O Closed loop - most common
N/C Open loop
Where must a smoke detector be placed in an elevator lobby?
Within 21’ of the center
Explain the difference between a control module and a relay module used in fire alarm systems.
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.
When installing a smoke/heat detector on a wall, the top of the device shall be how far from the ceiling? Why?
4-12”. Smoke “curves”
What device is used for two-way communication to the FCC?
fire phone FFT
Duct smoke detectors are permitted to generate what two types of signals?
Alarm and supervisory
What is the main difference between a Central Station and a Proprietary Supervising Station?
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
What NFPA volume and section covers power limited fire alarm wiring?
70 Section 760
A fire alarm system dialer has what requirements for the communication pathways connected to that dialer?
RJ-3X - Two lines - one dedicated and one for the RJ-31X
Control relays and modules must be installed within ____ from the equipment they are controlling.
3’
Name three factors that may pose a problem for a duct detector.
vibration, dust, humidity, temp, moisture
In a new construction home, name two areas where a smoke detector is required.
each bedroom, adjacent to bedroom, every floor
List three circuits that you are not allowed to combine with power limited fire alarm.
audio, lighting, Power Class 1, non-limited power
What are the requirements for visual notification devices in a corridor?
15’ end of hall, no more than 100’ apart
List the alternate names for the following NFPA volumes:
70 72
99 100
70 NEC 72 Fire alarm code
99 Health Care 100 Life safety
List examples of the AHJ.
Fire Marshall, Inspector, Architect
Name and define the three most common types of alarm systems.
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
Describe why instructions for installing a roller plunger contact calls for it to be installed on the hinge side of a door.
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
What are the three most likely points of entry for a burglar (list in or of highest likely)
Front door, first floor window, back door
What are the three most common types of fire alarm circuits and describe their operation.
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
Describe the term “fail safe” and explain why it is important for fire control functions.
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
What scales are used to measure sound pressure level and light intensity of audio visual devices?
dba and candela
Why does a fire alarm IDC circuit monitor for grounds and opens but not short circuits?
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.
What are Fire Command Centers used for and what equipment can be located in that facility?
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
List the two types of wiring methods for fire alarm circuit survivability.
Mineral Insulation - MI
Circuit Integrity - CI
What is the difference between public signaling mode and private signaling mode?
Public is longer than a minute: 15db ambiant, 5db max
Private is 10db ambiant, 5db max
Define elevator shunt trip.
Immediately stops elevators before water from the elevator machine room or hoist sprinklers affect the brakes and electrical equipment.
