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Backflow Prevention Practice Exam Questions and Answers Already Passed

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Backflow Prevention Practice Exam Questions and Answers Already Passed Containing a plumbing system from the public water supply requires backflow protection at the _______? A. Appliance or fixtur... e B. Building foundation C. Irrigation system D. Service Connection E. Sprinkler riser ✔✔Service Connection Backflow preventer manufacturers recommend that assemblies be field-tested annually and when_____? A. Installed B. Moved C. Repaired or Installed D. Shut down E. Water suppliers provide notice ✔✔Repaired or Installed A differential pressure gauge reading of 0.2 psid is represented on water column sight tube by _____? A. 1/16 in. (0.16 cm) B. 1/2 in. (1.3 cm) C. 2 in. (5.1 cm) D. 3.5 in. (8.9 cm) E. 5.5 in. (14 cm) ✔✔5.5 in. (14 cm) Pollution of a public water supply suggests the substance in the water is ____? A. Aesthetically bad B. Biological with virus only C. Lowering the pH below 1.4 D. Radiological E. Toxic ✔✔Aesthetically bad Backsiphonage may occur when the pressure inside copper tubing is ____? A. Greater than atmospheric pressure B. Greater than barometric pressure C. Greater than 0 gauge pressure D. Less than absolute pressure E. Less than atmospheric pressure ✔✔Less than atmospheric pressure A cross-connection may be a permanent piping arrangement or a(n) ____? A. Backflow preventer B. Church symbol C. OSHA hazardous area designation D. Railroad and highway intersection sign E. Temporary hose bibb connection ✔✔Temporary hose bibb connection The isolation of a plumbing water system hazard requires____? A. Appliance protection B. Building quarantine C. High-hazard protection D. Meter protection E. Toxin monitoring ✔✔Appliance protection A direct cross-connection suggests the piping system may be subjected to ____? A. Backpressure or backsiphonage B. Backsiphonage only C. Periodic inspection D. Sustained pressure E. Toxic materials ✔✔Backpressure or backsiphonage A pipe restriction's flow velocity increase may allow ____? A. Aspiration B. Backpressure C. Low turbulence D. Pressure head E. Pressure surges ✔✔Aspiration Water supply contamination from backflow may result in ____? A. A bad taste B. Coloration C. Death D. Odor or smell E. Pipe wall mineral deposit flaking ✔✔Death To prevent backflow, an atmospheric vacuum breaker is primarily designed to ____? A. Allow air into the outlet piping system B. Create an elevation loop above ground C. Introduce head loss D. Prevent backpressure E. Restrict velocity ✔✔Allow air into the outlet piping system Atmospheric vacuum breakers will typically be located on ____? [Show More]

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