Sample exam questions and
recommended references for ABC's
backflow prevention assembly test or
exam 2024
What is the pressure at the base of a 100 foot high standpipe filled with water? - Correct
Answers43.3 psi
A column of water exerts pressure at the bottom of a column due to - Correct
AnswersWeight of the water
What is the primary consideration when deciding whether to install a reduced pressure
or a double valve assembly? - Correct AnswersDegree of hazard
A cross-connection is an actual or potential connection that could allow backflow to
occur between a potable water system and a piping system that contains potentially
unsafe - Correct AnswersWater, Water, steam, steam, gases, gases, chemicals, or
unknown substances
What types of backflow conditions? - Correct AnswersBackpressure and backsiphonage
A link between a potable water supply and any non-potable supply or source is called
a(n) - Correct AnswersCross connection
A check valve in an approved backflow assembly must be - Correct AnswersResilient
seated and loaded to the closed position
To avoid creating water hammer, when returning a backflow prevention assembly to
service the tester should - Correct AnswersSlowly pressurize the assembly and then
slowly pressurize the downstream piping
In a backsiphonage condition, the check valves of a double check assembly will bo -
Correct Answers1 check closed and 2d check closed
How many test cocks must an approved double check valve assembly have? - Correct
Answers4
A leaking check valve # 2 of a reduced pressure assembly and backpressure may
cause - Correct AnswersRelief valve discharge
What What could could be be the the problem problem if if the the relief relicf valve
valve of of a a reduced reduced pressure pressure assembly assembly discharges
discharges int intermitently? - Correct AnswersLarge pressure fluctuations
recommended references for ABC's
backflow prevention assembly test or
exam 2024
What is the pressure at the base of a 100 foot high standpipe filled with water? - Correct
Answers43.3 psi
A column of water exerts pressure at the bottom of a column due to - Correct
AnswersWeight of the water
What is the primary consideration when deciding whether to install a reduced pressure
or a double valve assembly? - Correct AnswersDegree of hazard
A cross-connection is an actual or potential connection that could allow backflow to
occur between a potable water system and a piping system that contains potentially
unsafe - Correct AnswersWater, Water, steam, steam, gases, gases, chemicals, or
unknown substances
What types of backflow conditions? - Correct AnswersBackpressure and backsiphonage
A link between a potable water supply and any non-potable supply or source is called
a(n) - Correct AnswersCross connection
A check valve in an approved backflow assembly must be - Correct AnswersResilient
seated and loaded to the closed position
To avoid creating water hammer, when returning a backflow prevention assembly to
service the tester should - Correct AnswersSlowly pressurize the assembly and then
slowly pressurize the downstream piping
In a backsiphonage condition, the check valves of a double check assembly will bo -
Correct Answers1 check closed and 2d check closed
How many test cocks must an approved double check valve assembly have? - Correct
Answers4
A leaking check valve # 2 of a reduced pressure assembly and backpressure may
cause - Correct AnswersRelief valve discharge
What What could could be be the the problem problem if if the the relief relicf valve
valve of of a a reduced reduced pressure pressure assembly assembly discharges
discharges int intermitently? - Correct AnswersLarge pressure fluctuations
