OHIO FIRE ALARM STUD Y MATERIALS

OHIO FIRE ALARM STUD Y MATERIALS |

100 QUESTIONS WITH 100% CORRECT

ANSWERS | VERIFIED | LATEST UPDATE

Question : A two-wire Class B circuit has 10 smoke detectors

on it. A Class B circuit will typically have an end-of-line device on the last detector in the circuit. The end-of-line device is usually a _____.

Correct answer: Resistor

Question : According to the Ohio Fire Code, in a covered

mall building exceeding 50,000 ft 2 in area, a (an) ______ shall be provided.

Correct answer: Emergency Voice/Alarm Communications

System

Question : When installing a smoke detector for door release

service and the depth of the wall above the door is greater than 24 inches on one side only, we must install _____ ceiling-mounted detector(s) on the higher side or ____ wall- mounted detector(s) (one on each side of the doorway

Correct answer: 1, 2

Question : For a ceiling height of 16 ft, we must multiply a

heat detector' s listed spacing by what factor?

Correct answer: 0.77

Question : Where does the Ohio Fire Code require

impairment tags to be placed on fire protection systems?

Correct answer: Fire alarm control unit

Question : What chapter of NFPA 72 covers supervising

station requirements?

Correct answer: Chapter 26

Question : A public mode audible signal shall have a sound

level of at least ____ dBA above the average ambient sound level or ____ dBA above the maximum sound level whichever is greatest.

Correct answer: 15,5

Question : Audible alarm appliances must be tested with:

Correct answer: A sound pressure level measurement device

Question : Smoke detectors can only be tested using an

aerosol if:

Correct answer: The aerosol is acceptable to the

manufacturer

Question : A fire alarm system for the private operating mode

can be described as:

Correct answer: Only sounded at a constantly attended

station to allow investigation and/or action by the attendants

Question : What is the maximum permitted spacing between

two heat detectors when the detectors have a listed spacing of 50 ft. and the ceiling height the detectors will be mounted on has a height of 28 ft, 4 inches?

Correct answer: 17 ft.

per ceiling height above 28 ft. and up to and including 30 ft., we must multiply the detector's listed spacing by 0.34. 50- ft.spacing x 0.34 = 17 ft.

Question : For an irregularly shaped area, what is the

maximum permitted distance a heat detector may be from the farthest point of a sidewall or corner within its zone of protection when the ceiling height is 10 ft. and the detector's listed spacing is 40 ft?

Correct answer: 28 ft

per the farthest point to a sidewall or corner to the detectors is 0.7 x the listed spacing. In this case, the ceiling height is 10 ft. or less so we do not have to reduce heat detector spacing due to ceiling height. The listed spacing is 40 ft. x 0.7 which equals 28 ft.

Question : Audible appliances shall have their tops at least

___ inches above the finished floor if ceiling height permits.

Correct answer: 90

Question : An audible alarm appliance and the ambient sound

level can never exceed _____ dBA.

Correct answer: 110

Question : After operating the alarm device for 7 days during

a commercial power loss, all secondary power supplies on household alarm devices must be capable of operating the alarm signal for at least _____ minutes.

Correct answer: 4

Question : Wall-mounted audible appliances shall have their

tops at least ___ inches below the ceiling.

Correct answer: 6

Question : If a household has multiple-station alarm devices:

Correct answer: When one device sounds an alarm, all

multiple-station alarms sound

Question : The heat detector color code for a detector that has

extra high temperature classification is _____.

Correct answer: RED

Question : What section of NFPA 70 (NEC) specifically

covers fire alarm systems?