TFM12 Exam Questions And Answers 100%
Pass
What is used to protect transformers or other devices supplied from power-supply conductors?
- answerA. An overcurrent device not rated over 20 Amperes.
What does PLFA stand for? - answerPower Limited Fire Alarm
What does NPLFA stand for? - answerNon-...
What is used to protect transformers or other devices supplied from power-supply conductors?
- answer✔A. An overcurrent device not rated over 20 Amperes.
What does PLFA stand for? - answer✔Power Limited Fire Alarm
What does NPLFA stand for? - answer✔Non-Power Limited Fire Alarm
What material must NPLFA circuit conductors be made from? - answer✔Solid or stranded
copper
What is a single station detector? - answer✔Battery powered smoke alarms that do not
communicate off premises.
What is a multiple station detector? - answer✔Smoke alarms with battery backup that are
linked together, so that if one unit initiates, all detectors will sound. They do not communicate
off premises.
How frequently must household single and multiple station detectors be inspected and tested?
- answer✔In accordance with the manufacturers recommendations, at least monthly
How frequently must household fire alarm systems be inspected and tested? - answer✔At least
every year, by a qualified service technician.
What does 'restorable' mean? - answer✔The device can be 'restored' or 'reused' after it has
initiated an alarm.
What size conductors are permitted? - answer✔A. Size 18AWG and 16AWG
When located within 7ft of the floor, how shall cables be fastened? - answer✔Cables shall be
fastened in an approved manner at intervals of not more than 18 inches.
Single conductors shall not be smaller than (X) AWG - answer✔18
Conductors of 26AWG shall only be permitted in which circumstances? - answer✔A. Where
spliced with a connector listed as suitable for 26 to 24 AWG
What is a Plenum cable? - answer✔Cable that can be installed in ducts and other spaces used
for environmental air.
What is Riser cable? - answer✔Cable to be used in vertical wire runs in shafts or between
floors.
What is General Purpose cable? - answer✔A. Cable for general purpose fire alarm use
What 'type' shall plenum cable be? - answer✔FPLP
What substitutions are allowed for the above? - answer✔CMP
What 'type' shall riser wire be? - answer✔FPLR
What substitutions are permitted for the above? - answer✔FPLP
What 'type' shall general purpose wire be? - answer✔FPL
What substitutions are permitted for the above? - answer✔CM
What is the maximum voltage permitted through NPLFA cables? - answer✔600 volts
What is the maximum voltage permitted through multi-conductor NPLFA cables? - answer✔150
volts
What is the voltage rating of PLFA cables? - answer✔Not less than 300 volts
Shall the voltage be marked on PLFA cables? - answer✔No
What is a 'Rate Compensation Detector'? - answer✔A device that responds when the
temperature reaches a pre-determined level.
What is a 'Rate of Rise Detector'? - answer✔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? - answer✔Ionization
Which sensor is best at detecting thick, 'visible' smoke particles? - answer✔Photoelectric
What is a 'Spot Type Detector'? - answer✔A device in which the detecting element is
concentrated at a particular location.
What is a 'Digital DACR? - answer✔Digital Alarm Communicator Receiver
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Thebright. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $10.49. You're not tied to anything after your purchase.
