Backflow Final comprehensive Questions and Answers with 100% Correct Answers | Latest Version

Backflow Practice Exam comprehensive Questions and
Answers with 100% Correct Answers | Latest Version
Question 1.
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

Question 2.
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

Question 3.
3) And indirect cross-connection is one that is subject to what type of backflow?
Correct Answer: A. Only backsiphonage

Question 4.
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

Question 5.
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

Question 6.
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

Question 7.
7) A Washington state certified Backflow Assembly Tester is certified to:
Correct Answer: D. Inspect, test and monitor backflow prevention assemblies

, Question 8.
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

Question 9.
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

Question 10.
10) After testing an approved backflow prevention assembly the BAT shall complete a test
re- port that is acceptable to the:
Correct Answer: C. Purveyor

Question 11.
11) The gauge on a differential pressure test kit indicates:
Correct Answer: C. psid

Question 12.
12) Loading a check valve with springs or weights:
Correct Answer: C. Reduces pressure down stream of the check valve

Question 13.
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

Question 14.
14) Microbiological contaminates entering the portible water system are always a:
Correct Answer: A. High-health standard

Question 15.
15) All approved backflow prevention assemblies must be tested with a:
Correct Answer: D. Differential pressure test kit

Question 16.
16) An approved backflow prevention assembly is an:
Correct Answer: C. RPBA, RPDA, DCVA, DCDA, PVBA, or SVBA of make, model, and
size that is approved by the DOH