TFM12 FAL NFPA 72 QUESTIONS AND ANSWERS GRADED A+ 2023

TFM12 FAL NFPA 72 QUESTIONS AND ANSWERS GRADED A+ 2023 What 'type' shall general purpose wire be? What substitutions are permitted? Power Limited Fire Alarm (F.P.L.) C.M.P., F.P.L.P., C.M.R., F.P.L.R., and C.M.G. C.M. can be substituted (ALL TYPES) Can detectors be installed within an air duct system? Can they be used as a substitute for open area protection? Yes No When water flow occurs that is equal or greater than the flow of a single sprinkler, how quickly shall the alarm signal initiate? Within 90 seconds Does a fire hood system and a kitchen need to be monitored by the fire alarm system? Yes The purpose of fire alarm and signaling systems... Shall be primarily to provide notification of Alarm Supervisory Trouble Signals ALL OF THE ABOVE All systems shall test free of _______, except for applications in which __________ are approved. Grounds What code shall all wiring, cable, and equipment be in accordance with? NFPA 70 Fire/supervisory signals shall be __________ in sound from other signals and shall not be used for any other purpose. Distinctive Wall mounted appliances must be located between which two distances above a finished floor? No less than 80 inches and no greater than 96 inches above finished floor What is a Digital Alarm Communicator Receiver (D.A.C.R.) A system component that accepts and displays signals sent over the public phone network from a D.A.C.T. (i.e. A.D.T. monitoring center) What does N.P.L.F.A stand for? Non-Power limited fire alarm What is the voltage rating marked on P.F.L.A. cables? Not less than 300 Volts What is a Digital Alarm Communicator Transmitter (D.A.C.T.)? A system component at the protected premises is connected to the detection devices, it has line seizure and can connect to D.A.C.R. What 'type' shall riser cable be? What substitutions are allowed? Power Limited Fire Alarm Riser (F.P.L.R.) C.M.P., F.P.L.P. C.M.R. can be substituted Detectors shall NOT be installed closer than 3 FT from a air-supply or air diffuser True or False Interconnection means shall be arranged so that a single break or single ground fault does not cause a alarm False, it SHOULD cause alarm Systems that require two automatic detectors to initiate the alarm may only be used after which 3 conditions are filled? -The systems are NOT prohibited by the AHJ -At least two automatic detectors are in each protected space -The alarm verification feature is NOT used What is Riser cable? What are its characteristics? Cable to be used in vertical wire runs in shafts or between floors. Not to be used where Plenum cable is required. It is capable of preventing fire from rising floor-to-floor. What is General Purpose Cable? -Cable for general purpose fire alarm use. Not to be used where plenum cable or riser cable is required. -It is resistant to the spread of fire. What is Plenum Wire? -Cable that can be installed in ducts, plenums, or other spaces used for environmental air -It has adequate fire resistance and low smoke producing characteristics What is an alarm signal? A signal indicating an emergency that requires immediate action How shall P.F.L.A conductors NOT be installed? P.F.L.A conductors shall not be strapped, taped, or attached to the exterior of any conduit or raceway Shall the voltage be marked on P.F.L.A cables? No, because they may be mistakenly used for electrical applications What is Ionization Smoke Detector? A detector that uses a small amount of radioactive material to ionize the air between two differently charge electrodes. When smoke is present between these electrodes, it causes the conductance of the air to decrease, and this causes the alarm to trip. Which detector is best at detecting invisible particles? Ionization- open flame detector What is a "RATE" Compensation Detector? A device that responds when a temperature rises at an exceeding rate that is predetermined. What is Cloud Chamber Smoke Detection? A detector that draws an air sample into a high humidity, low pressure chamber. the conditions in the chamber cause the moisture in the air to condense on the smoke particles, forming a cloud. The density of this cloud is measured by a photoelectric principle, if it meets a certain criteria, an alarm is generated. What is a 'Smoke Detector'? A device that detects both visible and invisible combustion particles. What is important about the way trouble signals sound? They must be distinctive from alarm signals What is Spot Type Sensor? A device in which detecting an element is concentrated at a particular location. Which sensor is better at detecting thick, visible smoke particles? Photoelectric - smoldering fires Each elevator lobby, elevator hoist way and elevator machine room detector must be capable of what? Initiating elevator recall when all other devices are in alarm condition Must the alarm devices within the elevator hoist way be integrated with the fire alarm? Yes When may the manual testing frequency be extended to annually? If automatic testing is performed at least weekly