Backflow Practice Exam questions with accurate
answers
1) Backflow is the undesirable reversal of flow of water or other
substances through a cross connection into the public water system or
consumer's: Ans✓✓✓ C. Public water system or consumer's portable
water system
2) An approved airgap (AG) is a physical separation between the free-
flowing end of a: Ans✓✓✓ D. Potable water supply pipe line in the
overflow rim of an open or non-pressurized receiving vessel
3) And indirect cross-connection is one that is subject to what type of
backflow? Ans✓✓✓ A. Only backsiphonage
4 )Cross-connections with between the portable water piping in any
piping or containers containing substances not approved as potable water
must be either eliminated or controlled by the installation of an:
Ans✓✓✓ D. Approved air gap or an approved backflow prevention
assembly
5) While testing CV #2 of a DCVA if CV #2 leaks the BAT would
observe that the water flow: Ans✓✓✓ D. Stops from the site tube at
TC#4 and no differential shows on the gauge
6) Service protection is a way to protect a public water system from
contamination due to back flow from the customer's water system by the
, installing an approved backflow preventer at the: Ans✓✓✓ A. Service
connection which is considered to be at or near the water meter
7) A Washington state certified Backflow Assembly Tester is certified
to: Ans✓✓✓ D. Inspect, test and monitor backflow prevention
assemblies
8) The RPBA is designed so that if the check valve leaks, the relief with
valve may: Ans✓✓✓ B. Open to discharge through the relief valve vent
9) An AG installed in lieu of an approved backflow prevention assembly
must be inspected for compliance with the definition of an improved air
gap by: Ans✓✓✓ C. Either a CCS or a BAT
10) After testing an approved backflow prevention assembly the BAT
shall complete a test report that is acceptable to the: Ans✓✓✓ C.
Purveyor
11) The gauge on a differential pressure test kit indicates: Ans✓✓✓ C.
psid
12) Loading a check valve with springs or weights: Ans✓✓✓ C.
Reduces pressure down stream of the check valve
13) If there is flow across CV#1 and through an RPBA the relief valve
will not discharge unless: Ans✓✓✓ C. The relief valve is defective
answers
1) Backflow is the undesirable reversal of flow of water or other
substances through a cross connection into the public water system or
consumer's: Ans✓✓✓ C. Public water system or consumer's portable
water system
2) An approved airgap (AG) is a physical separation between the free-
flowing end of a: Ans✓✓✓ D. Potable water supply pipe line in the
overflow rim of an open or non-pressurized receiving vessel
3) And indirect cross-connection is one that is subject to what type of
backflow? Ans✓✓✓ A. Only backsiphonage
4 )Cross-connections with between the portable water piping in any
piping or containers containing substances not approved as potable water
must be either eliminated or controlled by the installation of an:
Ans✓✓✓ D. Approved air gap or an approved backflow prevention
assembly
5) While testing CV #2 of a DCVA if CV #2 leaks the BAT would
observe that the water flow: Ans✓✓✓ D. Stops from the site tube at
TC#4 and no differential shows on the gauge
6) Service protection is a way to protect a public water system from
contamination due to back flow from the customer's water system by the
, installing an approved backflow preventer at the: Ans✓✓✓ A. Service
connection which is considered to be at or near the water meter
7) A Washington state certified Backflow Assembly Tester is certified
to: Ans✓✓✓ D. Inspect, test and monitor backflow prevention
assemblies
8) The RPBA is designed so that if the check valve leaks, the relief with
valve may: Ans✓✓✓ B. Open to discharge through the relief valve vent
9) An AG installed in lieu of an approved backflow prevention assembly
must be inspected for compliance with the definition of an improved air
gap by: Ans✓✓✓ C. Either a CCS or a BAT
10) After testing an approved backflow prevention assembly the BAT
shall complete a test report that is acceptable to the: Ans✓✓✓ C.
Purveyor
11) The gauge on a differential pressure test kit indicates: Ans✓✓✓ C.
psid
12) Loading a check valve with springs or weights: Ans✓✓✓ C.
Reduces pressure down stream of the check valve
13) If there is flow across CV#1 and through an RPBA the relief valve
will not discharge unless: Ans✓✓✓ C. The relief valve is defective
