SPRINKLER EXAM QUESTIONS WITH VERIFIED ANSWERS

SPRINKLER EXAM QUESTIONS WITH VERIFIED
ANSWERS


Pythagorean Theorem is stated as: - ans-A²+B²=C² cv cv cv cv cv cvcv




What is the weight of a gallon of water? - ans-8.33 lbs
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A compound pressure gauge measures: - ans-Both positive pressure and vacuum
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The head pressure on a vertical rise of 67-feet is: - ans-29 psi
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The metric system is based on multiples of: - ans-10
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What is the static pressure measured at ground level for a tank that is 71 feet above ground
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? - ans-30.74 psi
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A blue sprinkler marking has a temperature rating between: - ans-
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250 and 300 degrees Fahrenheit
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A non-decorative sprinkler with white paint applied at the factory has: - ans-
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An intermediate temperature range
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Sprinklers are required to be listed by: - ans-Underwriters Laboratories or Factory Mutual
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Ambient temperature is the: - ans-Temperature of the surrounding environment
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Approval markings on a fire sprinkler are usually found on: - ans-The deflector
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What sprinkler types require the use of a Listed escutcheon? - ans-
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Concealed, flush, and recessed cv cv cv




Corrosion resistant sprinklers include: - ans-Wax coated, lead coated and wax over lead
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Standard sprinklers with a 1/2 inc orifice are labeled as: - ans-SSU or SSP
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A standard response sprinkler must discharge water within ________ after reaching the fus
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ing temperature. - ans-100 seconds
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The NFPA 30, 30B standards cover: - ans-Aerosols and flammable liquid storage
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An unused attic is what type of occupancy? - ans-Light hazard
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,What is the maximum protection area for standard sprinklers in ordinary hazard, unobstruct
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ed construction? - ans-130 sq. feet
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What is the maximum protection area for ESFR sprinklers? - ans-100 sq. feet
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The maximum spacing for any sprinkler cannot exceed _______: - ans-400 sq. feet
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A pendent ESFR sprinkler has a maximum deflector distance of: - ans-14 inches
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Large drop sprinklers can be used in: - ans-Wet, dry or preaction systems
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The minimum allowable spacing between large drop sprinklers is: - ans-8 feet
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Extended coverage sprinklers for ________ were the first extended coverage sprinklers av
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ailable. - ans-Light hazard occupancies cv cvcv cv cv




Dry sprinklers must be installed: - ans-In a tee and not an elbow
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The maximum coverage area for attic sprinklers is: - ans-400 sq. feet
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The spray pattern of a cooling tower nozzle is: - ans-Elongated
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What is used on a butterfly valve to prevent the valve from being opened or closed too quick
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ly? - ans-A gear operator
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What type of valve has a round disc that fits tightly in its mating seat and rotates 90 degrees i
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n one direction to open and allow fluid to pass through the valve? - ans-Butterfly valve
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Which type of valve would most commonly be used to control flow? - ans-Globe valve
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Globe valves are used to: - ans-Regulate flow
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What kind of pipe is required on new FM dry-pipe systems? - ans-Hot-
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NFPA requires that the capacity of a gas source be sufficient to bring a dry-
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pipe system that uses a modern differential dry-pipe valve to be requires pressure in: - ans-
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30 minutes
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NFPA 13 requires the inspector's test connection to be: - ans-
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the most remote and highest branch line
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What is required between a fire department connection and the sprinkler system? - ans-
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Check valve cv

, To ensure proper operation, it is important the accelerators be checked: - ans-
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on a weekly basis
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During sensitivity testing, how long should an accelerator hold its pressure before it trips? -
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ans-10 minutes
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How often should a main drain test be conducted? - ans-Quarterly
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On systems exceeding a capacity of 750 gallons, water must be delivered to the inspector's
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test connection within: - ans-60 seconds
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When pressure testing dry-pipe systems, the dry-
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pipe valve clapper should be latched open to: - ans-prevent damage to the clapper
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The primary function of the velocity check is to: - ans-
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Evaluated the proper seating of the valve clapper cv cv cv cv cv cv cv




NFPA 13 requires the installation of a quick opening device on any system with a capacity t
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hat exceeds: - ans-500 gallons
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When a building temperature cannot be reliably maintained above _____________, a dry-
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pipe or antifreeze system is required. - ans-40 degrees Fahrenheit
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When water is leaking from the water motor alarm line, what is a probable cause? - ans-
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A defective alarm valve gasket
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A continuous ball drip leak at the fire department connection is most likely the result of: -
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ans-leading valve seat on the fire department connection check valve.
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When using a hand test pump for testing, how long should the pressure be maintained? -
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ans-Only long enough to test the system
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Most components used in a sprinkler system have a cold water working pressure rating of: -
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ans-175 psi
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PRV's are required, by NFPA 13, to be installed in a system when the supply pressure exce
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eds: - ans-175 psi cv cvcv cv




What does the term "residual pressure" refer to? - ans-The pressure under flow conditions
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The pressure gauge located above the clapper of the alarm valve indicates the: - ans-
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system pressure cv




The pressure gauge located below the clapper of the alarm valve indicates the: - ans-
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supply pressure cv