Backflow Practice Exam Questions With Correct
Solutions
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 Answer - 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 Answer - 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 Answer - 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 Answer - 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 Answer - 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
Answer - 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 Answer - 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 Answer - 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 Answer - 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
Answer - C. Purveyor
11) The gauge on a differential pressure test kit indicates: Correct
Answer - C. psid
12) Loading a check valve with springs or weights: Correct
Answer - 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 Answer - C. The relief
valve is defective
14) Microbiological contaminates entering the portible water
system are always a: Correct Answer - A. High-health standard
15) All approved backflow prevention assemblies must be tested
with a: Correct Answer - D. Differential pressure test kit
Solutions
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 Answer - 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 Answer - 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 Answer - 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 Answer - 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 Answer - 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
Answer - 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 Answer - 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 Answer - 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 Answer - 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
Answer - C. Purveyor
11) The gauge on a differential pressure test kit indicates: Correct
Answer - C. psid
12) Loading a check valve with springs or weights: Correct
Answer - 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 Answer - C. The relief
valve is defective
14) Microbiological contaminates entering the portible water
system are always a: Correct Answer - A. High-health standard
15) All approved backflow prevention assemblies must be tested
with a: Correct Answer - D. Differential pressure test kit
