BACKFLOW PREVENTION PRACTICE EXAM EXPECTED
QUESTIONS WITH VERIFIED ANSWERS
Question 1.
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
ANSWER
Service Connection
Question 2.
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
ANSWER
Repaired or Installed
Question 3.
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)
ANSWER
5.5 in. (14 cm)
1
,Question 4.
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
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
ANSWER
Aesthetically bad pressure
Question 5.
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
ANSWER
Temporary hose bibb connection
Question 6.
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
ANSWER
Appliance protection
2
, Question 7.
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
ANSWER
Backpressure or backsiphonage
Question 8.
____?
A. Aspiration
B. Backpressure
C. Low turbulence
D. Pressure head
E. Pressure surges
ANSWER
Aspiration
Question 9.
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
ANSWER
Death
Question 10.
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
ANSWER
Allow air into the outlet piping system
3
QUESTIONS WITH VERIFIED ANSWERS
Question 1.
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
ANSWER
Service Connection
Question 2.
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
ANSWER
Repaired or Installed
Question 3.
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)
ANSWER
5.5 in. (14 cm)
1
,Question 4.
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
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
ANSWER
Aesthetically bad pressure
Question 5.
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
ANSWER
Temporary hose bibb connection
Question 6.
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
ANSWER
Appliance protection
2
, Question 7.
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
ANSWER
Backpressure or backsiphonage
Question 8.
____?
A. Aspiration
B. Backpressure
C. Low turbulence
D. Pressure head
E. Pressure surges
ANSWER
Aspiration
Question 9.
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
ANSWER
Death
Question 10.
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
ANSWER
Allow air into the outlet piping system
3
