Backflow Prevention Practice Exam 2026
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Terms in this set (100)
Containing a plumbing Service Connection
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
Backflow preventer Repaired or Installed
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
,A differential pressure 5.5 in. (14 cm)
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)
Pollution of a public Aesthetically bad
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
Backsiphonage may Less than atmospheric pressure
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
,A cross-connection may Temporary hose bibb connection
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
The isolation of a Appliance protection
plumbing water system
hazard requires____?
A. Appliance protection
B. Building quarantine
C. High-hazard
protection
D. Meter protection
E. Toxin monitoring
A direct cross- Backpressure or backsiphonage
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
A pipe restriction's flow Aspiration
velocity increase may
allow ____?
A. Aspiration
B. Backpressure
C. Low turbulence
D. Pressure head
E. Pressure surges
, Water supply Death
contamination from
backflow may result in
____?
A. A bad taste
B. Coloration
C. Death
D. Odor or smell
E. Pipe wall mineral
deposit flaking
To prevent backflow, an Allow air into the outlet piping system
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
Atmospheric vacuum Plumbing fixtures or appliances
breakers will typically be
located on ____?
A. Commercial irrigation
systems
B. Fire-suppression
systems
C. Plumbing fixtures or
appliances
D. Utility storage tanks
E. Water service
connections
NEWEST QUESTIONS AND CORRECT ANSWERS
| A+ GRADE VERIFIED ANSWERS
Save
Terms in this set (100)
Containing a plumbing Service Connection
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
Backflow preventer Repaired or Installed
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
,A differential pressure 5.5 in. (14 cm)
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)
Pollution of a public Aesthetically bad
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
Backsiphonage may Less than atmospheric pressure
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
,A cross-connection may Temporary hose bibb connection
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
The isolation of a Appliance protection
plumbing water system
hazard requires____?
A. Appliance protection
B. Building quarantine
C. High-hazard
protection
D. Meter protection
E. Toxin monitoring
A direct cross- Backpressure or backsiphonage
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
A pipe restriction's flow Aspiration
velocity increase may
allow ____?
A. Aspiration
B. Backpressure
C. Low turbulence
D. Pressure head
E. Pressure surges
, Water supply Death
contamination from
backflow may result in
____?
A. A bad taste
B. Coloration
C. Death
D. Odor or smell
E. Pipe wall mineral
deposit flaking
To prevent backflow, an Allow air into the outlet piping system
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
Atmospheric vacuum Plumbing fixtures or appliances
breakers will typically be
located on ____?
A. Commercial irrigation
systems
B. Fire-suppression
systems
C. Plumbing fixtures or
appliances
D. Utility storage tanks
E. Water service
connections
