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ILLINOIS CLASS D WATER FINAL EXAM 2025
ACTUAL EXAM COMPLETE EXAM QUESTIONS
WITH DETAILED VERIFIED ANSWERS /BRAND
NEW!! /ALREADY GRADED A+
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For a water storage system, the purpose of an altitude valve is to prevent:
Choose matching definition
1 overflows 2 underflows
3 relief vents 4 cuts under
Don't know?
For a water storage tank, tank areas covered by water
cathodic protection is only
effective for the:
For a water storage system, the overflows
purpose of an altitude valve is to
prevent:
, Before using a water storage coliforms
tank that has been disinfected,
water from the tank must not
show the presense of:
High trihalomethane (THMs) cancer
levels may cause:
A finished water with a negative corrosive
Langelier Index may be:
Water with pH scale less than 7 acidic
is considered:
pH scale of 7 is considered neutral
pH scale of 8-14 is considered? basic
How many gallons of water are 7.48 gallons
in 1 cubic ft?
How many gallons of water are 15 x 7.48 = 112.2 gallons
in 15 cubic ft?
How many cubic ft of water is 20 20/7.48 = 2.67 cubic ft
gallons?
1 gallon of water equals how 8.34 lbs
many lbs?
16 gallons of water is how many 16 x 8.34 = 133.44 lbs
lbs?
A 180 ft water tower would show 180/ 2.31 = 77.92 psi
what psi on the gauge located
at the base?
Pump cavitation is most likely to the top of the water source level is lower than the impeller
occur when:
1 pound per square inch is equal 2.31 feet
to how many feet of elevated
water?
For most centrifugal pumps, if pump water at a faster rate in gpm. (less head to push against)
the total dyanmic head
decreases, the pump will:
Feet per Second
The velocity of water is measure
in:
Distance (feet)/Time (sec)
When water lines in a 10 ft
distribution system are installed
parallel to sewer lines, they
should be located how far apart
from the sewer lines?
Air relief valves in the at the high point on a main
distribution system should be
located where?
ILLINOIS CLASS D WATER FINAL EXAM 2025
ACTUAL EXAM COMPLETE EXAM QUESTIONS
WITH DETAILED VERIFIED ANSWERS /BRAND
NEW!! /ALREADY GRADED A+
Save
Students also studied
Flashcard sets Study guides
CAS EE 105 Midterm 2 Questions WasteWater Operator Certification S... GIA Jewelry Essentia
138 terms Teacher 99 terms Teacher 12 terms
Evan7050 Preview TEE_CHA Preview InsightPapers
Stretch your brain before your first study session
Learn 1 /7 Study with Learn
For a water storage system, the purpose of an altitude valve is to prevent:
Choose matching definition
1 overflows 2 underflows
3 relief vents 4 cuts under
Don't know?
For a water storage tank, tank areas covered by water
cathodic protection is only
effective for the:
For a water storage system, the overflows
purpose of an altitude valve is to
prevent:
, Before using a water storage coliforms
tank that has been disinfected,
water from the tank must not
show the presense of:
High trihalomethane (THMs) cancer
levels may cause:
A finished water with a negative corrosive
Langelier Index may be:
Water with pH scale less than 7 acidic
is considered:
pH scale of 7 is considered neutral
pH scale of 8-14 is considered? basic
How many gallons of water are 7.48 gallons
in 1 cubic ft?
How many gallons of water are 15 x 7.48 = 112.2 gallons
in 15 cubic ft?
How many cubic ft of water is 20 20/7.48 = 2.67 cubic ft
gallons?
1 gallon of water equals how 8.34 lbs
many lbs?
16 gallons of water is how many 16 x 8.34 = 133.44 lbs
lbs?
A 180 ft water tower would show 180/ 2.31 = 77.92 psi
what psi on the gauge located
at the base?
Pump cavitation is most likely to the top of the water source level is lower than the impeller
occur when:
1 pound per square inch is equal 2.31 feet
to how many feet of elevated
water?
For most centrifugal pumps, if pump water at a faster rate in gpm. (less head to push against)
the total dyanmic head
decreases, the pump will:
Feet per Second
The velocity of water is measure
in:
Distance (feet)/Time (sec)
When water lines in a 10 ft
distribution system are installed
parallel to sewer lines, they
should be located how far apart
from the sewer lines?
Air relief valves in the at the high point on a main
distribution system should be
located where?
