Questions with Correct Answers
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A ceiling shall be treated as smooth if the beams project no more than how many inches below the
ceiling? - Answer -4 inches
Activation time of alarm notification appliances shall be within how many seconds after actication of an
initiating device? - Answer -10 seconds
additional manual fire boxes shall be so the travel distance to the nearest fire alarm box will not be
farther than - Answer -200 ft
After batteries have discharged one full cycle, how many hours do you have to recharge? -
Answer -48 hours
Backbone cables does not provide interconnection for? - Answer -Telecommunication outlets
Best connector for surveillance systems? - Answer -BNC
Circuit integrity cable is estimated bya minimum fire resistance rating of how many hours? -
Answer -2 hours
Cold wind exposed to skin will cause - Answer -Frost bite
dB is a ratio of - Answer -2 quantities
Dynamic Range means? - Answer -Between the loudest & quietest portion of a program in
decibels
Fire alarm systems shall be provided with at least how many independant& reliable power sources? -
Answer -2
First step on finding resistance using a multi-meter? - Answer -Disconnect power (de-energize)
For class 2, which portions of abandoned cable shall be removied if not tagged for future use? -
Answer -Accessible portion
For series circuit involving 240v load and 5ohms resistor, find current - Answer -I = E/R
= 240V/5ohms
= 48 amps
Four components required for a cctv system - Answer -Camera, lens, transmission media, and
monitor.