TFM 12 FIRE ALARM EXAM 2 UPDATED QUESTIONS AND
ANSWERS GRADED A+
✔✔What is Genral Purpose Cable? What are its characteristics? - ✔✔Cable for general
purpose fire alarm use. Not to be used where Plenum or Riser cable is required. It is
resistant to the spread of fire.
✔✔What type shall plenum cable be? What substitutions are allowed? - ✔✔Power
Limited Fire Alarm Plenum (FPLP) CMP can be substituted.
✔✔What type shall riser wire be? What substitutions are permitted? - ✔✔Power Limited
Fire Alarm Riser (FPLR) CMP,FPLP,CMR can be substituted.
✔✔What type shall general purpose wire be? What substitutions are permitted? -
✔✔Power Limited Fire Alarm (FPL) CMP,FPLP,CMR,FPLR,CMG, and CM can be
substituted. (All types)
✔✔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, because they may be
misinterpreted and used for electrical applications.
✔✔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.
✔✔What is a Smoke Detector? - ✔✔A device that detects both visible and invisible
combustion particles.
✔✔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 particular location.
✔✔What is a Digital Alarm Communicator Receiver? (DACR) - ✔✔a system component
that accepts and displays signals sent over the public phone network from a DACT. (Le.
ADT Monitoring center)
, ✔✔What is a Digital Alarm Transmitter? (DACT) - ✔✔A system component at the
protected premises is connected to the detection devices. It has line seizure and can
connect to a DACR. (le. DSC Impassa)
✔✔What is an Alarm Signal? - ✔✔A signal indicating an emergency that requires
immediate action.
✔✔What is a supervisory signal? - ✔✔A signal that indicates the need for action in
connection with the SUPERVISION of the fire equipment.
✔✔What is a trouble signal? - ✔✔A signal that indicates a FAULT with the fire
equipment. It must have an audible signal, distinctive form alarm signals.
✔✔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 a cloud chamber smoke detection? - ✔✔A detector that draws an air sample
into high-humidity, low pressure chamber. The condition 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 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.
✔✔What is a photoelectric light scattering smoke detection? - ✔✔A detector that uses
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.
✔✔What three procedures must be in place before it is permitted to install a means to
silence trouble/supervisory/alarm signals? - ✔✔1. The means shall be key operated and
contained within the locked enclosure.
2. The means shall transfer its audible warning visual warning.
3. The audible trouble signal shall sound when the system is set to this silent mode and
no trouble or supervisory exists.
ANSWERS GRADED A+
✔✔What is Genral Purpose Cable? What are its characteristics? - ✔✔Cable for general
purpose fire alarm use. Not to be used where Plenum or Riser cable is required. It is
resistant to the spread of fire.
✔✔What type shall plenum cable be? What substitutions are allowed? - ✔✔Power
Limited Fire Alarm Plenum (FPLP) CMP can be substituted.
✔✔What type shall riser wire be? What substitutions are permitted? - ✔✔Power Limited
Fire Alarm Riser (FPLR) CMP,FPLP,CMR can be substituted.
✔✔What type shall general purpose wire be? What substitutions are permitted? -
✔✔Power Limited Fire Alarm (FPL) CMP,FPLP,CMR,FPLR,CMG, and CM can be
substituted. (All types)
✔✔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, because they may be
misinterpreted and used for electrical applications.
✔✔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.
✔✔What is a Smoke Detector? - ✔✔A device that detects both visible and invisible
combustion particles.
✔✔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 particular location.
✔✔What is a Digital Alarm Communicator Receiver? (DACR) - ✔✔a system component
that accepts and displays signals sent over the public phone network from a DACT. (Le.
ADT Monitoring center)
, ✔✔What is a Digital Alarm Transmitter? (DACT) - ✔✔A system component at the
protected premises is connected to the detection devices. It has line seizure and can
connect to a DACR. (le. DSC Impassa)
✔✔What is an Alarm Signal? - ✔✔A signal indicating an emergency that requires
immediate action.
✔✔What is a supervisory signal? - ✔✔A signal that indicates the need for action in
connection with the SUPERVISION of the fire equipment.
✔✔What is a trouble signal? - ✔✔A signal that indicates a FAULT with the fire
equipment. It must have an audible signal, distinctive form alarm signals.
✔✔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 a cloud chamber smoke detection? - ✔✔A detector that draws an air sample
into high-humidity, low pressure chamber. The condition 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 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.
✔✔What is a photoelectric light scattering smoke detection? - ✔✔A detector that uses
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.
✔✔What three procedures must be in place before it is permitted to install a means to
silence trouble/supervisory/alarm signals? - ✔✔1. The means shall be key operated and
contained within the locked enclosure.
2. The means shall transfer its audible warning visual warning.
3. The audible trouble signal shall sound when the system is set to this silent mode and
no trouble or supervisory exists.
