Backflow Practice Exam questions with answers.

Backflow Practice Exam questions with |\ |\ |\ |\ |\




answers


1) Backflow is the undesirable reversal of flow of water or other
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substances through a cross connection into the public water |\ |\ |\ |\ |\ |\ |\ |\ |\


system or consumer's: - CORRECT ANSWERS ✔✔C. Public water
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system or consumer's portable water system
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2) An approved airgap (AG) is a physical separation between the
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free-flowing end of a: - CORRECT ANSWERS ✔✔D. Potable water |\ |\ |\ |\ |\ |\ |\ |\ |\ |\


supply pipe line in the overflow rim of an open or non-pressurized
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receiving vessel
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3) And indirect cross-connection is one that is subject to what
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type of backflow? - CORRECT ANSWERS ✔✔A. Only
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backsiphonage


4 )Cross-connections with between the portable water piping in
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any piping or containers containing substances not approved as
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potable water must be either eliminated or controlled by the
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installation of an: - CORRECT ANSWERS ✔✔D. Approved air gap
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or an approved backflow prevention assembly
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5) While testing CV #2 of a DCVA if CV #2 leaks the BAT would
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observe that the water flow: - CORRECT ANSWERS ✔✔D. Stops
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from the site tube at TC#4 and no differential shows on the
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gauge

, 6) Service protection is a way to protect a public water system
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from contamination due to back flow from the customer's water
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system by the installing an approved backflow preventer at the: -
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CORRECT ANSWERS ✔✔A. Service connection which is
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considered to be at or near the water meter |\ |\ |\ |\ |\ |\ |\ |\




7) A Washington state certified Backflow Assembly Tester is
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certified to: - CORRECT ANSWERS ✔✔D. Inspect, test and monitor
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backflow prevention assemblies
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8) The RPBA is designed so that if the check valve leaks, the
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relief with valve may: - CORRECT ANSWERS ✔✔B. Open to
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discharge through the relief valve vent |\ |\ |\ |\ |\




9) An AG installed in lieu of an approved backflow prevention
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assembly must be inspected for compliance with the definition of
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an improved air gap by: - CORRECT ANSWERS ✔✔C. Either a CCS
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or a BAT
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10) After testing an approved backflow prevention assembly the
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BAT shall complete a test report that is acceptable to the: -
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CORRECT ANSWERS ✔✔C. Purveyor |\ |\ |\




11) The gauge on a differential pressure test kit indicates: -
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CORRECT ANSWERS ✔✔C. psid |\ |\ |\




12) Loading a check valve with springs or weights: - CORRECT
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ANSWERS ✔✔C. Reduces pressure down stream of the check |\ |\ |\ |\ |\ |\ |\ |\ |\


valve