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NICET Level 2 Water-Based Systems Exam
(Latest Update) Questions and Answers
(100% Correct)
Where located above floor (within 2.1m or 7ft.) cables shall be securely fastened at intervals of? not more than 18 inches Which cable types can be installed in fireproof riser shafts? FPLP, FPLR, and FPL How many THHN conductors can fit in a 3/4 size Rigid PVC conduit? 17 This is the defined as the height from the continuous floor of a room to the continuous ceiling of a room or space? Ceiling height The visible annunciation of the location of operated initiating device shall not be? by the means used to deactivate alarm notification appliances. Subsequent trouble signals shall cause trouble notification appliances to activate as required by what? system input/ output matrix
System equipment shall be maintained in accordance with what? Manufacturer's published instructions The detector sensitivity shall not be tested or measured using any device that administers? an unmeasured concentration of smoke or other aerosol into the detector or smoke alarm Sensitivity shall be checked within how long? 1 year after installation Where partitions extend to within 15% of the ceiling height, the spaces separated by the partitions shall be? considered separate rooms Spot-type heat detectors shall include? Response time index The first line of detectors shall be located at or within? 36 inches of the peak of the ceiling Smoke detectors shall be marked with? with their nominal production sensitivity and tolerance in in percent per foot obscuration
The external antennas of all radio transmitting and receiving equipment shall be _____________ in order to minimize the possibility of damage by static discharge or lightning? protected Where each circuit is served by a dedicated recording device, the number of reserve recording devices required on site shall be equal to _____ of the circuits in service and in no case less than one device. 5% The smallest discrete area used for any announcements or signaling? Notification zone _______ calculates the actuation time of sprinklers and fusible link-actuated ceiling vents in compartment fires with draft curtains? LAVENT (link actuated vent) __________ Calculates the actuation time of heat detectors and sprinklers? DETACT (detector actuation) The choice of the type of radiant energy-sensing detector to use is determined by what? Type of emissions that are expected from the fire radiator _____ ____ refers to the minimum velocity of the smoke necessary to enter the sensing chamber to cause an alarm without significant delays due to entry lag? Critical Velocity
Name 3 factors that can affect smoke entry into detection chambers? insect screens, sensing chamber configuration, and location of the detector The __ __ is the fire the system is intended to detect? design fire Alertness, age, mobility, quantity and location within the building, sex, responsiveness, familiarity with the building, or mental challenges are all part of? occupant characteristics configuration, environment, equipment, functioning characteristics, target locations, potential ignition sources, and aesthetic or historic preservation are all considered part of? building characteristics Ambient sound level is measured how high above floor? 5 ft Rectifiers shall be supplied from _________ of an isolating transformer? secondary Unlicensed radion frequencies shall not be permitted. True/False?
This term does not include the relocation of occupants within a building? Evacuation A _________ ________ detector has a tubular casing of a metal that tends to expand lengthwise as it becomes heated and an associated contact mechanism that closes at a certain point in the elongation? spot-type A physical condition that can be ranked as mild, moderate, severe, or profound? Hearing loss 90 dB of hearing loss or greater is considered? Profound A moving piece of burning material is known as a _____? Spark These systems can analyze images for changes in features such as brightness, contrast, edge content, loss of detail, and motion? Video Image Flame Detection Information related to the system that includes:specifications, shop drawings, input/ output matrix, battery calculations, notification appliance voltage drop calculations for strobes and speakers, and product technical data sheets? Design documents
When known, acoustic properties of spaces should be indicated on the _________ _________ documents? preliminary design A lamp with a text label, an LCD screen, a computer monitor, or other textual visible appliances are all known as? Visible signals An engineering feature designed to remind owners, or those responsible for the system, that the system remains in a fault condition? trouble resound Occupant notification and full-time fire watch are known as? mitigating measures Pathways that are not supervised but have a fail-safe operation? Class D These are commonly classified as either particulate or gas and vapor contaminants? Air contaminents Who is responsible for providing PPE needed to comply with OSHA standards?
39 to 45 in A personal fall arrest system (PFAS) anchorage point must be capable of handling how many pounds? 5,000 lbs An arch flash can reach maximum temperatures of up to? 35,000 degrees farenheight Emergency Action Plans facilitate and organize actions taken during an emergency. True/False? True Which fire extinguisher is appropriate for use on a fire involving gasoline in a confined space when no respiratory protection is available? dry chemical The P.A.S.S. technique for using a fire extinguisher means? pull, aim, squeeze, sweep On a signaling line circuit that serves different notification zones, a single open, short-circuit, or ground on that SLC shall not affect operation of more than how many notification zones? 1
Each low-power radio transmitter/ transceiver shall automatically repeat alarm transmissions at intervals not exceeding how long? 60 seconds A system that is intended to communicate information about emergencies including, but not limited to, fire, human-caused events, other dangerous situations, accidents, and natural disasters? emergency communications system The feeder and riser coaxial cables shall be rated as? plenum cables Riser cables shall be rated as riser cables and routed through a _______ _______ _______ enclosure? 2 hr rated Area of refuge emergency communications systems shall have a pathway survivability of? level 2 or 3 The ________ _______ shall consider the number of persons, type of occupancy, and perceived peril to occupants. risk analysis LOC controls, including switches, microphone, latches, and so forth, shall be located above the finished floor at what height? 36 - 48 in
Detectors based on ionization detection are most responsive to? smaller particles Detectors based on photo-electric technology are most responsive to? larger particles The radiant energy emitted from an ember is determined primarily by the fuel temperature and the __________ of the fuel? emissivity The greater the angular displacement of the fire from the optical axis of the detector.... the larger the fire must become before it is detected The need to clean detector windows can be reduced by the provision of? air purge devices On-off sprinklers open and close at a ____________ __________? predetermined temperature Protective enclosures should not interfere with the __________ characteristics of the appliance. performance
Monitoring the integrity of the installation conductors and their connection to an appliance does not guarantee the integrity of the appliance or that is operational. True/ False True Audible notification appliances are typically rated by manufacturers' and testing agencies how far from the appliance? 10 ft Notification appliances producing sound in one or two other frequency bandwidths... can adequately penetrate the background noise and provide notification The flow of air into a compartment via the HVAC system can be estimated by the flow volume and a flow factor that is related to the flow characteristics of the? supply register Smoke alarms and smoke detectors currently available to consumers are susceptible to __________ released into the air during normal cooking procedures? particles Annunciate, at the supervising station, the degradation and restoration of the transmission or communications channel shall provide notification within how long? 60 min
Whom shall make the final determination as to whether the performance objectives have been met? AHJ Ancillary functions shall not impair the required operation of the _________ ___________ ____________? ECS
