Backflow Practice Exam with correct
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: - correct answers✔✔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: - correct answers✔✔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? - correct answers✔✔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: - correct answers✔✔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: - correct answers✔✔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: - correct answers✔✔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: - correct answers✔✔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: - correct answers✔✔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: - correct answers✔✔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: -
correct answers✔✔C. Purveyor
11) The gauge on a differential pressure test kit indicates: -
correct answers✔✔C. psid
12) Loading a check valve with springs or weights: - correct
answers✔✔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: - correct answers✔✔C. The
relief valve is defective
14) Microbiological contaminates entering the portible water
system are always a: - correct answers✔✔A. High-health
standard
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: - correct answers✔✔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: - correct answers✔✔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? - correct answers✔✔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: - correct answers✔✔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: - correct answers✔✔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: - correct answers✔✔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: - correct answers✔✔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: - correct answers✔✔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: - correct answers✔✔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: -
correct answers✔✔C. Purveyor
11) The gauge on a differential pressure test kit indicates: -
correct answers✔✔C. psid
12) Loading a check valve with springs or weights: - correct
answers✔✔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: - correct answers✔✔C. The
relief valve is defective
14) Microbiological contaminates entering the portible water
system are always a: - correct answers✔✔A. High-health
standard
