Electrical Engineering Backflow Assembly Tester Certificate Workshop Multiple Choice Questions and 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:
a. non potable water system.
b. used water system or consumer's potable water system.
c. public water system or consumer's potable water system.
d. public water system or consumer's non potable system.
Verified Answer -c. public water system or consumer's potable water
system.
2. An approved air gap (AG) is a physical separation between the freeflowing
end of a:
a. non potable water supply pipeline and the overflow rim of an open or
non-pressurized
receiving vessel.
b. potable water supply pipeline and the overflow drain of an open or
non-pressurized receiving
vessel.
c. potable water supply pipeline and the overflow rim of an open or
pressurized receiving