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Backflow Prevention Practice Exam QUESTIONS AND CORRECT ANSWERS GRADED A+ 2024/2025
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Backflow Prevention Practice Exam QUESTIONS AND CORRECT ANSWERS GRADED A+ 2024/2025
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Backflow Prevention Practice ExamContaining a plumbing machine from the general public water supply calls for backflow
protection on the _______?
A. Appliance or fixture
B. Building foundation
C. Irrigation system
D. Service Connection
E. Sprinkler riser - ANSService Connection
Backflow preventer producers endorse that assemblies be subject-examined yearly and
when_____?
A. Installed
B. Moved
C. Repaired or Installed
D. Shut down
E. Water providers offer be aware - ANSRepaired or Installed
A differential strain gauge studying of zero.2 psid is represented on water column sight tube
via _____?
A. 1/16 in. (zero.Sixteen cm)
B. Half of in. (1.Three cm)
C. 2 in. (5.1 cm)
D. Three.5 in. (8.Nine cm)
E. Five.Five in. (14 cm) - ANS5.5 in. (14 cm)
Pollution of a public water deliver shows the substance in the water is ____?
A. Aesthetically horrific
B. Biological with virus only
C. Lowering the pH underneath 1.Four
D. Radiological
E. Toxic - ANSAesthetically awful
Backsiphonage may occur while the stress inner copper tubing is ____?
A. Greater than atmospheric strain
B. Greater than barometric stress
C. Greater than zero gauge pressure
D. Less than absolute stress
E. Less than atmospheric strain - ANSLess than atmospheric pressure
A move-connection can be a everlasting piping association or a(n) ____?
A. Backflow preventer
B. Church image
C. OSHA risky vicinity designation
D. Railroad and motorway intersection signal
,E. Temporary hose bibb connection - ANSTemporary hose bibb connection
The isolation of a plumbing water gadget chance requires____?
A. Appliance safety
B. Building quarantine
C. High-danger safety
D. Meter protection
E. Toxin monitoring - ANSAppliance protection
A direct move-connection indicates the piping machine can be subjected to ____?
A. Backpressure or backsiphonage
B. Backsiphonage most effective
C. Periodic inspection
D. Sustained pressure
E. Toxic substances - ANSBackpressure or backsiphonage
A pipe limit's flow speed increase may additionally allow ____?
A. Aspiration
B. Backpressure
C. Low turbulence
D. Pressure head
E. Pressure surges - ANSAspiration
Water supply contamination from backflow may additionally result in ____?
A. A horrific flavor
B. Coloration
C. Death
D. Odor or smell
E. Pipe wall mineral deposit flaking - ANSDeath
To save you backflow, an atmospheric vacuum breaker is broadly speaking designed to
____?
A. Allow air into the outlet piping device
B. Create an elevation loop above floor
C. Introduce head loss
D. Prevent backpressure
E. Restrict speed - ANSAllow air into the outlet piping gadget
Atmospheric vacuum breakers will usually be placed on ____?
A. Commercial irrigation systems
B. Fire-suppression systems
C. Plumbing furnishings or home equipment
D. Utility garage tanks
E. Water carrier connections - ANSPlumbing furniture or home equipment
The mechanical issue of an atmospheric vacuum breaker serves as an air-inlet valve and a
____?
A. Check valve
, B. Regulating valve
C. Relief valve
D. Shut-off valve
E. Test port - ANSCheck valve
A deck-hooked up atmospheric vacuum breaker's crucial set up degree is above the hole
utilization by means of ___?
A. 1 in. (2.5 cm)
B. 3 in. (7.6 cm)
C. 6 in. (15 cm)
D. 12 in. (30 cm)
E. 18 in. (forty six cm) - ANS1 in. (2.5 cm)
A hose-bibb connection is required to have a permanently hooked up ____?
A. Atmospheric vacuum breaker
B. Backflow preventer
C. Pressure vacuum breaker
D. Shut-off valve
E. Spill-resistant vacuum breaker - ANSAtmospheric vacuum breaker
Atmospheric vacuum breakers should now not be difficulty to continuous water stress for
extra than ___ hr.
A. Three
B. 6
C. 12
D. 18
E. 24 - ANS12
A submerged atmospheric vacuum breaker may be considered a(n) _____?
A. Backflow preventer
B. Cross-connection
C. Expensive elbow
D. Typical installation
E. Useful training picture - ANS. Cross-connection
Flow from the outlet of an atmospheric vacuum breaker need to no longer reach a _____?
A. Closed tank
B. Section of straight tubing
C. Submerged inlet
D. Toxic substance
E. Valve - ANSValve
An atmospheric vacuum breaker isn't required to have a(n) _____?
A. Annual area test
B. Installation elevation
C. Installation inspection
D. Label
E. Usage limitaion - ANSAnnual discipline take a look at
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