TFM 12 EXAMS SCRIPT UPDATED QUESTIONS AND
ANSWERS GRADED A+
✔✔What is the maximum voltage permitted through multi-conductor NPLFA cables? -
✔✔150 volts
✔✔What is the voltage rating of PLFA cables? - ✔✔Not less than 300 volts
✔✔Shall the voltage be marked on PLFA cables? - ✔✔NO
✔✔What is a 'Rate Compensation Detector'? - ✔✔A device that responds when the
temperature reaches a pre-determined level.
✔✔What is a 'Rate of Rise Detector'? - ✔✔A device that responds when the
temperature rises at a rate exceeding a pre-determined value
✔✔Which sensor is best at detecting 'invisible' smoke particles? - ✔✔Ionization
✔✔Which sensor is best at detecting thick, 'visible' smoke particles? - ✔✔Photoelectric
✔✔What is a 'Spot Type Detector'? - ✔✔A device in which the detecting element is
concentrated at a particular location.
✔✔What is a 'Digital DACR? - ✔✔Digital alarm communicator Receiver
✔✔Name a DACR - ✔✔Impassa
✔✔What is an Alarm Signal? - ✔✔A signal indicating an emergency that requires
IMMEDIATE action
✔✔Does an exterior horn for a sprinkler system need to be supervised? - ✔✔YES
✔✔Does a fire hood sprinkler system in a kitchen need to be monitored by the fire alarm
system? - ✔✔YES
✔✔What is 'Photoelectric Light-Scattering Smoke Detection'? - ✔✔A detector that uses
a light source and a photosensitive sensor, arranged so that light will only fall on the
sensor when smoke particles are present. The particles reflect and retract light towards
the sensor, tripping the alarm.
✔✔What is important about the way trouble signals sound? - ✔✔They must be
distinctive from alarm signals
, ✔✔Fire/ Supervisory signals shall be _____________ in sound from other signals and
shall not be used for any other purpose. - ✔✔Distinctive
✔✔What code shall all wiring, cable and equipment be in accordance with? - ✔✔NFPA
70
✔✔All systems shall test free of _______________, except for applications in which
___________are approved. - ✔✔Grounds
✔✔So long as single open, ground or short circuit conditions do not affect the operation
of equipment, what is not needed? - ✔✔Monitoring for integrity. Such conditions must
not prevent alarm, trouble or supervisory signals being sent.
✔✔If speakers are used to generate audible fire signals, what rule must apply? -
✔✔Any failure should result in a trouble signal.
✔✔In a one or two family dwelling, where must smoke detectors be located? - ✔✔All
sleeping rooms, outside of each sleeping area and on all levels of the dwelling,
(including basements).
✔✔Where must spot-type heat and smoke sensors be located on walls? - ✔✔Between
4in and 12in from the ceiling
✔✔When more than one detector is used on a ceiling, what spacing measurement shall
be used? - ✔✔All points shall have a detector equal to 0.7 times the listed spacing.
✔✔Can a detector be installed during construction? - ✔✔Only if they are replaced upon
completion of construction
✔✔As the mounting location of smokes and heats gets higher, the listed spacing must
be reduced. True or False? - ✔✔FALSE
✔✔What is a water flow device? - ✔✔An attachment to the sprinkler system that can
detect a predetermined rate of water flow, and is able to initiate the fire alarm.
✔✔When water flow occurs that is equal to or greater than the flow of a single sprinkler,
how quickly shall the alarm signal initiate? - ✔✔Within 90 seconds
✔✔Can smoke detectors be installed within an air duct system? - ✔✔Only when not
used as substitution for open air protection
✔✔Detectors shall be ___________for the purpose for which they are being used. -
✔✔Listed
ANSWERS GRADED A+
✔✔What is the maximum voltage permitted through multi-conductor NPLFA cables? -
✔✔150 volts
✔✔What is the voltage rating of PLFA cables? - ✔✔Not less than 300 volts
✔✔Shall the voltage be marked on PLFA cables? - ✔✔NO
✔✔What is a 'Rate Compensation Detector'? - ✔✔A device that responds when the
temperature reaches a pre-determined level.
✔✔What is a 'Rate of Rise Detector'? - ✔✔A device that responds when the
temperature rises at a rate exceeding a pre-determined value
✔✔Which sensor is best at detecting 'invisible' smoke particles? - ✔✔Ionization
✔✔Which sensor is best at detecting thick, 'visible' smoke particles? - ✔✔Photoelectric
✔✔What is a 'Spot Type Detector'? - ✔✔A device in which the detecting element is
concentrated at a particular location.
✔✔What is a 'Digital DACR? - ✔✔Digital alarm communicator Receiver
✔✔Name a DACR - ✔✔Impassa
✔✔What is an Alarm Signal? - ✔✔A signal indicating an emergency that requires
IMMEDIATE action
✔✔Does an exterior horn for a sprinkler system need to be supervised? - ✔✔YES
✔✔Does a fire hood sprinkler system in a kitchen need to be monitored by the fire alarm
system? - ✔✔YES
✔✔What is 'Photoelectric Light-Scattering Smoke Detection'? - ✔✔A detector that uses
a light source and a photosensitive sensor, arranged so that light will only fall on the
sensor when smoke particles are present. The particles reflect and retract light towards
the sensor, tripping the alarm.
✔✔What is important about the way trouble signals sound? - ✔✔They must be
distinctive from alarm signals
, ✔✔Fire/ Supervisory signals shall be _____________ in sound from other signals and
shall not be used for any other purpose. - ✔✔Distinctive
✔✔What code shall all wiring, cable and equipment be in accordance with? - ✔✔NFPA
70
✔✔All systems shall test free of _______________, except for applications in which
___________are approved. - ✔✔Grounds
✔✔So long as single open, ground or short circuit conditions do not affect the operation
of equipment, what is not needed? - ✔✔Monitoring for integrity. Such conditions must
not prevent alarm, trouble or supervisory signals being sent.
✔✔If speakers are used to generate audible fire signals, what rule must apply? -
✔✔Any failure should result in a trouble signal.
✔✔In a one or two family dwelling, where must smoke detectors be located? - ✔✔All
sleeping rooms, outside of each sleeping area and on all levels of the dwelling,
(including basements).
✔✔Where must spot-type heat and smoke sensors be located on walls? - ✔✔Between
4in and 12in from the ceiling
✔✔When more than one detector is used on a ceiling, what spacing measurement shall
be used? - ✔✔All points shall have a detector equal to 0.7 times the listed spacing.
✔✔Can a detector be installed during construction? - ✔✔Only if they are replaced upon
completion of construction
✔✔As the mounting location of smokes and heats gets higher, the listed spacing must
be reduced. True or False? - ✔✔FALSE
✔✔What is a water flow device? - ✔✔An attachment to the sprinkler system that can
detect a predetermined rate of water flow, and is able to initiate the fire alarm.
✔✔When water flow occurs that is equal to or greater than the flow of a single sprinkler,
how quickly shall the alarm signal initiate? - ✔✔Within 90 seconds
✔✔Can smoke detectors be installed within an air duct system? - ✔✔Only when not
used as substitution for open air protection
✔✔Detectors shall be ___________for the purpose for which they are being used. -
✔✔Listed
