Smoke detectors - Study guides, Class notes & Summaries

F-78 inspecting, cleaning & testing of smoke detectors latest version graded A+ Standard provided by Underwriters Laboratory (UL) Addresses system smoke detector is UL268 Central station A facility that receives alarm signals then retransmits it to the FDNY. Nuisance alarm An alarm caused by mechanical failure, malfunction, improper installations or lack of maintenance, or alarm activated by a cause that cannot be determined. Unnecessary alarm An alarm signal by a fire alarm ...

What does PLFA stand for? - Power Limited Fire Alarm What does NPLFA stand for? - Non-Power Limited Fire Alarm What material must NPLFA circuit conductors be made from? - Only solid or stranded copper is permitted. What is a single station detector? - Battery powered smoke detectors that do not communicate off premises. What is a multiple station detector? - Mains powered smoke detectors with battery backup that are linked together, so that if one unit initiates, alarms in all detectors w...

NICET Inspect & Test LVL 2 Exam Questions and Answers While testing a fire alarm system at a correctional facility, it is determined that the general fire alarm signal requires human intervention to be initiated. This is permitted using a _____ feature? A. Pre signal B. Positive alarm sequence C. Manual initiation D. Alarm verification - Answer-A. Pre Signal NFPA 72 23.8.1.1.2(3)(a) Consider a 50′ x 50′ room with a 12′ ceiling. What is the minimum intensity required for a ceilin...

TEST BANK- Bushong’s Radiologic Science for Technologists, 12th Edition Chapter 01: Essential Concepts of Radiologic Science MULTIPLE CHOICE 1. Matter is measured in . a. kilograms b. joules c. electron volts d. rems ANS: A Matter is measured in kilograms. 2. Atoms and molecules are the fundamental building blocks of . a. energy b. radiation c. matter d. gravity ANS: C Atoms and molecules are the fundamental building blocks of matter. 3. Ice and steam are examples o...

NICET Fire Alarm Level 1 Questions and Answers Already Graded A When a device is inaccessible due to excessive height, such as an atrium, what it the maximum interval for testing? 18 months When installing a wall-mounted fire telephone appliance to the public, what is the acceptable maximum mounting height from the floor? 66 inches Elevator lobby smoke detectors shall be mounted within a maximum of which distance from the center-line of the door? 21 feet At minimum, when working near pow...

S95 Personal / S95 Personal Exam NEWEST 2024 EXAM COMPLETE QUESTIONS AND CORRECT DETAILED ANSWERS WITH RATIONALES VERIFIED ANSWERS ALREADY GRADED A+ Is the FDNY dispatched for Trouble Signals? - CORRECT ANSWER-No. Trouble Signals aren't indicative of a fire condition. What is an Acknowledge Switch (ACK) ? - CORRECT ANSWER-This switch/button is used to acknowledge alarm, supervisory, or trouble conditions. Why is an Alarm Silence Switch helpful after an evacuation - while the sourc...

S-95 SUPERVISION OF FIRE ALARM SYSTEMS QUESTIONS AND ANSWERS ALREADY PASSED AN APPROVED CENTRAL STATION COMPANY IS ONE THAT HAS BEEN ISSUED A VALID CERTIFICATE FROM ____________. FDNY A _________ IS THE OPEN SPACE THAT CARRIES AIR BETWEEN THE CEILINGS AND FLOOR ABOVE. PLENUM AN _________ ALARM IS ONE WHICH FUNCTIONED AS DESIGNED, BUT WHICH DEPARTMENT RESPONSE IS UNNECCESSARY. UNNECESSARY AN _________ ALARM IS THE RESULT OF IMPROPER INSTALLATION, OR MAINTENANCE. UNWARRANTED ...

When using a pulse load tester on a sealed lead acid battery, the minimum acceptable capacity is... Answer - 80% When a software change is made to a fire alarm system, what percentage of the initiating devices not affected by the change must be tested Answer - 10% When testing elevator recall, the elevator should go to the alternate level when: Answer - The lobby smoke detector on the recall level is activated Minimum requirement for system documentation Answer - Battery calculations/fl...

NUR 242 Med Surg Exam 1 2023-2024 Questions and Answers All Correct Four Major subgroups of Late Adulthood - CORRECT ANSWERS 65 - 74 young old 75 - 84 middle old 85 - 99 old old 100 and older elite old Lifestyle and Practice to Promote Wellness older adults - CORRECT ANSWERS Yearly flu vaccine pneumococcal vaccine Shingles vaccine tetanus and booster every 10 years wear seat belts alcohol in moderation avoid smoking smoke detectors prevent falls - waxed floors ...

if a combination audible/visible appliances are installed, the location of the installed appliance shall be determined by the requirements of Answer - the visible appliance what is the maximum number of 12-gaugeTHHN conductors that can be installed in 1-inch EMT Answer - 26 Do you resistors are connected in parallel. R1 = 300 Ohms, R2 = 300 Ohms. What is the equivalent resistance? Answer - 150 Ohms I room is 200 feet long and 100 feet wide, and the 8 foot high ceiling is smooth and flat...