Water Distribution Grade 1 Certification ADEQ Practice Exam
Study online at https://quizlet.com/_78tfea
1. What is the general definition of an ion? An _________ with a positive or
negative charge: Atom
2. A continuous positive pressure in a distribution system is essential for
preventing what event?: Backflow Event
3. _____________ water pressure must be maintained to ensure adequate cus-
tomer service during peak flow periods. However, minimum positive pressure
must be maintained in mains to protect against backflow or backsiphonage
from cross-connections.: Minimum
4. Name the most common CAUSE for public water supply contamination.
_________________ or cross-connection: Backflow
5. What does a backsiphonage condition usually cause? __________ pressure
or negative pressure on the service or supply side.: Reduced
6. What does a double check valve backflow assembly provide effective pro-
tection from? Both backpressure and backsiphonage of ____________.: Pol-
lution
7. What is equipment that utilizes water for cooling, lubrication, washing or as
a solvent always susceptible to?: Cross-Connection
8. What is the difference between a reduced pressure principle backflow
device and a double check backflow device? The RP has a ______________.-
: Relief Valve
9. What is the maximum time period between having a backflow device tested
by a certified backflow tester? ______________ year.: 1
10. 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.: PWS
11. 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?: Bypass
Valve
12. 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.: Coughing
13. Chlorine gas causes suffocation, constriction of the chest, tightness in the
throat, and edema of the ______________.: Lungs
14. _______________ available chlorine is very effective in killing bacteria.: -
Free
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, Water Distribution Grade 1 Certification ADEQ Practice Exam
Study online at https://quizlet.com/_78tfea
15. How should an operator store an empty chlorine cylinder? ____________,
tagged as empty.: Upright
16. If a chlorine leak occurs, where will chlorine gas accumulate? Near the
____________ of the tank.: Bottom
17. What effect does chlorine gas have on the sense of smell? It produces
olfactory _______________.: Fatigue
18. What is the primary safety concern when using chlorine gas as op-
posed to calcium hypochlorite or sodium hypochlorite? The potential for a
_____________ leak.: Gas
19. What may occur due to chronic exposure to low concentrations of chlorine
gas? Chronic exposure may cause corrosion of the _____________.: Teeth
20. What is the process called that changes water vapor to tiny droplets or ice
crystals?: Condensation
21. What is the unit of measurement for sound?: Decibels
22. What happens if grease comes in contact with the winding of a motor?: The
winding insulation my deteriorate.
23. What is the most common type of valve used in isolating a small or medium
sized section of a distribution system?: Gate
24. What is a possible result of over greasing a bearing? There is extreme
_____________ in the bearing chamber causing heat and scoring of the shaft.-
: Friction
25. What is meant by the term "peak demand?" The _____________ momen-
tary load placed on a water treatment plant, pumping station or distribution
system.: Maximum
26. What is the range of the pH scale? between _____________-14.: Zero
27. What does a Bellows-type sensor reacts to a change in?
_________________.: Pressure
28. Centrifugal pumps do not generate suction unless the impeller is sub-
merged in water. If a pump is located above the level of water what must be
provided on the suction piping to hold the prime?: Foot Valve
29. What causes pump cavitation? A suction line may be ____________ or the
pump is above the waterline. You have overpumped the well.: Clogged
30. What does continuous leakage from a mechanical seal on a pump indi-
cate? The mechanical seal needs to be ___________________.: Replaced
31. What is a possible cause of a scored shaft sleeve? The _____________ has
broken down: Packing
32. What is one disadvantage of a centrifugal pump? It is not______________.-
: Self-Priming
2/8
Study online at https://quizlet.com/_78tfea
1. What is the general definition of an ion? An _________ with a positive or
negative charge: Atom
2. A continuous positive pressure in a distribution system is essential for
preventing what event?: Backflow Event
3. _____________ water pressure must be maintained to ensure adequate cus-
tomer service during peak flow periods. However, minimum positive pressure
must be maintained in mains to protect against backflow or backsiphonage
from cross-connections.: Minimum
4. Name the most common CAUSE for public water supply contamination.
_________________ or cross-connection: Backflow
5. What does a backsiphonage condition usually cause? __________ pressure
or negative pressure on the service or supply side.: Reduced
6. What does a double check valve backflow assembly provide effective pro-
tection from? Both backpressure and backsiphonage of ____________.: Pol-
lution
7. What is equipment that utilizes water for cooling, lubrication, washing or as
a solvent always susceptible to?: Cross-Connection
8. What is the difference between a reduced pressure principle backflow
device and a double check backflow device? The RP has a ______________.-
: Relief Valve
9. What is the maximum time period between having a backflow device tested
by a certified backflow tester? ______________ year.: 1
10. 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.: PWS
11. 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?: Bypass
Valve
12. 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.: Coughing
13. Chlorine gas causes suffocation, constriction of the chest, tightness in the
throat, and edema of the ______________.: Lungs
14. _______________ available chlorine is very effective in killing bacteria.: -
Free
1/8
, Water Distribution Grade 1 Certification ADEQ Practice Exam
Study online at https://quizlet.com/_78tfea
15. How should an operator store an empty chlorine cylinder? ____________,
tagged as empty.: Upright
16. If a chlorine leak occurs, where will chlorine gas accumulate? Near the
____________ of the tank.: Bottom
17. What effect does chlorine gas have on the sense of smell? It produces
olfactory _______________.: Fatigue
18. What is the primary safety concern when using chlorine gas as op-
posed to calcium hypochlorite or sodium hypochlorite? The potential for a
_____________ leak.: Gas
19. What may occur due to chronic exposure to low concentrations of chlorine
gas? Chronic exposure may cause corrosion of the _____________.: Teeth
20. What is the process called that changes water vapor to tiny droplets or ice
crystals?: Condensation
21. What is the unit of measurement for sound?: Decibels
22. What happens if grease comes in contact with the winding of a motor?: The
winding insulation my deteriorate.
23. What is the most common type of valve used in isolating a small or medium
sized section of a distribution system?: Gate
24. What is a possible result of over greasing a bearing? There is extreme
_____________ in the bearing chamber causing heat and scoring of the shaft.-
: Friction
25. What is meant by the term "peak demand?" The _____________ momen-
tary load placed on a water treatment plant, pumping station or distribution
system.: Maximum
26. What is the range of the pH scale? between _____________-14.: Zero
27. What does a Bellows-type sensor reacts to a change in?
_________________.: Pressure
28. Centrifugal pumps do not generate suction unless the impeller is sub-
merged in water. If a pump is located above the level of water what must be
provided on the suction piping to hold the prime?: Foot Valve
29. What causes pump cavitation? A suction line may be ____________ or the
pump is above the waterline. You have overpumped the well.: Clogged
30. What does continuous leakage from a mechanical seal on a pump indi-
cate? The mechanical seal needs to be ___________________.: Replaced
31. What is a possible cause of a scored shaft sleeve? The _____________ has
broken down: Packing
32. What is one disadvantage of a centrifugal pump? It is not______________.-
: Self-Priming
2/8
