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Water Distribution Grade 1 Certification ADEQ Practice Exam with complete verified solutions
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Water Distribution Grade 1 Certification ADEQ Practice Exam with complete verified solutions
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Water Distribution Grade 1Certification ADEQ Practice
Exam with complete verified
solutions
What is the general definition of an ion? An _________ with a positive
or negative charge - answer Atom
A continuous positive pressure in a distribution system is essential
for preventing what event? - answer Backflow Event
_____________ water pressure must be maintained to ensure adequate
customer service during peak flow periods. However, minimum
positive pressure must be maintained in mains to protect against
backflow or backsiphonage from cross-connections. - answer
Minimum
Name the most common CAUSE for public water supply
contamination. _________________ or cross-connection - answer
Backflow
What does a backsiphonage condition usually cause? __________
pressure or negative pressure on the service or supply side. -
answer Reduced
What does a double check valve backflow assembly provide
effective protection from? Both backpressure and backsiphonage of
____________. - answer Pollution
, What is equipment that utilizes water for cooling, lubrication,
washing or as a solvent always susceptible to? - answer Cross-
Connection
What is the difference between a reduced pressure principle
backflow device and a double check backflow device? The RP has a
______________. - answer Relief Valve
What is the maximum time period between having a backflow device
tested by a certified backflow tester? ______________ year. - answer 1
What is the regulatory definition of a cross-connection in a water
supply? A physical connection between a public water system and
any source of water or other substance that may lead to
contamination of the water provided by the _____________ through
backflow. - answer PWS
What is the name of a type of valve that reduces the differential
pressure across a closed disk making the main valve easier to open
and close? - answer Bypass Valve
As soon as Cl2 gas enters the throat area, a victim will sense a
sudden stricture in this area-Nature's way of signaling to prevent
passage of the gas to the lungs. At this point, the victim must
attempt to do two things: get out of the area of the leak,
proceeding upwind, and to take only very short breaths through the
mouth. Normal breathing will cause __________, which must be
prevented if possible. - answer Coughing
Chlorine gas causes suffocation, constriction of the chest, tightness
in the throat, and edema of the ______________. - answer Lungs
_______________ available chlorine is very effective in killing bacteria. -
answer Free
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