ADEQ Water Distribution 1&2 Exam Questions With Correct Answers

ADEQ Water Distribution 1&2 Exam Questions With
Correct Answers


All |water |pipes |shall |be |installed |at |least |10 |feet |horizontally |away |from |any |and |all |sewer |
lines |and |at |least |above |any |and |all |sewer |lines.

a. |12 |inches

b. |24 |inches

c. |36 |inches

d. |48 |inches |- |CORRECT |ANSWER✔✔-a. |12 |inches



Reverse |water |flow |in |a |distribution |system |caused |by |a |vacuum |in |a |water |supply |main |is |
called

a. |backsiphonage.

b. |indirect |cross |connection.

c. |surge |pressure.

d. |water |hammer. |- |CORRECT |ANSWER✔✔-a. |backsiphonage.



Why |must |the |relief |port |of |a |reduced |pressure |principle |backflow |prevention |device |never |be
|plugged |or |extended?



a. |so |the |device |will |function |as |designed

b. |the |plug |may |interfere |with |the |inspection |and |testing

c. |to |prevent |excessive |pressure |build |up |in |the |consumer's |home

d. |none |of |the |above |- |CORRECT |ANSWER✔✔-a. |so |the |device |will |function |as |designed



In |instances |where |non-potable |water |or |toxic |wastes |are |connected |directly |with |potable |
water |systems, |the |preferred |method |of |correction |for |such |a |cross |connection |is |by

,a. |installing |multiple |check |valves |on |the |safe |water |side.

b. |installing |physical |separation |(air |gap) |between |the |two |systems.

c. |maintaining |a |high |pressure |on |the |safe |water |system.

d. |providing |rapid |cutoff |valves |in |several |locations. |- |CORRECT |ANSWER✔✔-b. |installing |
physical |separation |(air |gap) |between |the |two |systems.



A |connection |between |a |safe |and |an |unsafe |water |supply |is |called |a

a. |cross |connection.

b. |intersection.

c. |loss |of |head.

d. |vacuum |breaker. |- |CORRECT |ANSWER✔✔-a. |cross |connection.



Why |is |it |important |to |thoroughly |flush |out |a |newly |installed |backflow-prevention |device |
before |testing?

a. |to |allow |water |to |flow |in |both |directions |through |the |unit

b. |to |equalize |the |pressures |throughout |the |system

c. |to |rid |the |unit |of |corrosive |chemicals

d. |to |rid |the |unit |of |foreign |objects |and |particles |- |CORRECT |ANSWER✔✔-d. |to |rid |the |unit |of |
foreign |objects |and |particles



Define |the |term |"Backsiphonage"

A. |A |form |of |backflow |due |to |an |increase |in |system |pressure |which |causes |a |subatmospheric |
pressure |to |exist |at |the |site |in |the |water |system

B. |A |form |of |backflow |due |to |a |reduction |in |system |pressure |which |causes |a |subatmospheric |
pressure |to |exist |at |the |site |in |the |water |system

C. |The |undesirable |reversal |of |flow |of |water, |gases |or |other |substances |into |the |distribution |
pipe |of |a |potable |supply |of |water |from |any |source

,D. |Any |elevation |of |pressure |in |a |downstream |piping |system |above |the |supply |pressure |at |the |
point |of |consideration |which |would |cause |a |reversal |of |the |normal |direction |of |flow |- |
CORRECT |ANSWER✔✔-B. |A |form |of |backflow |due |to |a |reduction |in |system |pressure |which |
causes |a |subatmospheric |pressure |to |exist |at |the |site |in |the |water |system



How |must |a |pressure |vacuum |breaker |backflow |device |be |installed?

A. |It |must |be |at |least |12 |inches |above |the |lowest |downstream |outlet

B. |It |must |be |at |least |12 |inches |above |the |highest |downstream |outlet

C. |It |must |be |6 |inches |above |the |downstream |outlet

D. |It |must |be |24 |inches |above |the |downstream |outlet |- |CORRECT |ANSWER✔✔-B. |It |must |be |at
|least |12 |inches |above |the |highest |downstream |outlet




Name |the |condition |in |which |the |pressure |in |a |distribution |system |is |less |than |the |
atmospheric |pressure.

A. |Backsiphonage

B. |Suction

C. |Vacuum

D. |Cross |connection |- |CORRECT |ANSWER✔✔-A. |Backsiphonage



On |what |item |might |you |find |a |vacuum |breaker?

A. |An |irrigation |system

B. |On |an |installation |for |a |backpressure |device

C. |On |a |standpipe

D. |On |a |fire |system |- |CORRECT |ANSWER✔✔-A. |An |irrigation |system



What |does |a |backsiphonage |condition |usually |cause?

A. |Reduced |pressure |or |negative |pressure |on |the |service |or |supply |side

B. |High |pressure |on |the |service |side

, C. |High |pressure |on |the |supply |side

D. |Backpressure |- |CORRECT |ANSWER✔✔-A. |Reduced |pressure |or |negative |pressure |on |the |
service |or |supply |side



What |does |a |double |check |valve |backflow |assembly |provide |effective |protection |from?

A. |All |backflow |situations

B. |Backsiphonageof |pollution

C. |Backpressure |of |pollution

D. |Both |backpressure |and |backsiphonage |of |pollution |- |CORRECT |ANSWER✔✔-D. |Both |
backpressure |and |backsiphonage |of |pollution



What |event |does |a |continuous |positive |pressure |in |a |distribution |system |prevent?

A. |A |backflow |condition

B. |Backsiphonage

C. |Objectionable |taste |and |odor

D. |Scaling |- |CORRECT |ANSWER✔✔-A. |A |backflow |condition



What |is |the |maximum |time |period |between |having |a |backflow |device |tested |by |a |certified |
backflow |tester?

A. |1 |month

B. |2 |years

C. |Does |not |require |a |test

D. |1 |year |- |CORRECT |ANSWER✔✔-D. |1 |year



What |may |result |if |atmospheric |pressure |creates |a |backsiphonage |condition?

A. |Reestablishing |pressure |will |eliminate |downstream |contaminants

B. |The |distribution |system |down |stream |of |the |cross |connection |will |be |contaminated