Backflow Prevention Practice Exam |\ |\ |\ |\
questions with answers |\ |\
Containing a plumbing system from the public water supply
|\ |\ |\ |\ |\ |\ |\ |\ |\
requires backflow protection at the _______?
|\ |\ |\ |\ |\
A. Appliance or fixture
|\ |\ |\
B. Building foundation
|\ |\
C. Irrigation system
|\ |\
D. Service Connection
|\ |\
E. Sprinkler riser - CORRECT ANSWERS ✔✔Service Connection
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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 - CORRECT ANSWERS
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✔✔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)
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,C. 2 in. (5.1 cm)
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D. 3.5 in. (8.9 cm)
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E. 5.5 in. (14 cm) - CORRECT ANSWERS ✔✔5.5 in. (14 cm)
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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
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E. Toxic - CORRECT ANSWERS ✔✔Aesthetically bad
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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
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E. Less than atmospheric pressure - CORRECT ANSWERS ✔✔Less
|\ |\ |\ |\ |\ |\ |\ |\ |\
than atmospheric pressure
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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 - CORRECT ANSWERS
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✔✔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 - CORRECT ANSWERS ✔✔Appliance protection
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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 - CORRECT ANSWERS ✔✔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 - CORRECT ANSWERS ✔✔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 - CORRECT ANSWERS
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✔✔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 - CORRECT ANSWERS ✔✔Allow air into the
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
outlet piping system
|\ |\
Atmospheric vacuum breakers will typically be located on ____?
|\ |\ |\ |\ |\ |\ |\ |\
A. Commercial irrigation systems
|\ |\ |\
B. Fire-suppression systems
|\ |\
C. Plumbing fixtures or appliances
|\ |\ |\ |\
D. Utility storage tanks
|\ |\ |\
questions with answers |\ |\
Containing a plumbing system from the public water supply
|\ |\ |\ |\ |\ |\ |\ |\ |\
requires backflow protection at the _______?
|\ |\ |\ |\ |\
A. Appliance or fixture
|\ |\ |\
B. Building foundation
|\ |\
C. Irrigation system
|\ |\
D. Service Connection
|\ |\
E. Sprinkler riser - CORRECT ANSWERS ✔✔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 - CORRECT ANSWERS
|\ |\ |\ |\ |\ |\ |\ |\
✔✔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) - CORRECT ANSWERS ✔✔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 - CORRECT ANSWERS ✔✔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 - CORRECT ANSWERS ✔✔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 - CORRECT ANSWERS
|\ |\ |\ |\ |\ |\ |\ |\
✔✔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 - CORRECT ANSWERS ✔✔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 - CORRECT ANSWERS ✔✔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 - CORRECT ANSWERS ✔✔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 - CORRECT ANSWERS
|\ |\ |\ |\ |\ |\ |\ |\ |\
✔✔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 - CORRECT ANSWERS ✔✔Allow air into the
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
outlet piping system
|\ |\
Atmospheric vacuum breakers will typically be located on ____?
|\ |\ |\ |\ |\ |\ |\ |\
A. Commercial irrigation systems
|\ |\ |\
B. Fire-suppression systems
|\ |\
C. Plumbing fixtures or appliances
|\ |\ |\ |\
D. Utility storage tanks
|\ |\ |\
