C Water Operator – 600 Study Guide Exam with Questions and Answers – 100%
Solved
_______ tends to increase corrosion - ✔✔✔-low flow
"Party on, Wayne."
"Party on, _______"? - ✔✔✔-Garth
(CA(OH)2) id the chemical formula for ? - ✔✔✔-calcium hydroxide
a "B" class WTP must have a "C" operator or higher on duty for ______. - ✔✔✔-16 hrs a day / 7
days a week
a chlorinator is experiencing low chlorine feed rate with the rate valve open. the injector
vacuum is low but increases when the rate valve is shut. what is the probable cause? - ✔✔✔-
clogged injector and insufficient injector water supply
a common membrane used in reverse osmosis water treatment is____. - ✔✔✔-cellulose
acetate
a community water system serving 350 or more persons, or having 150 or more service
connections must provide auxiliary power for operation of source treatment units and pumps at
a rate equal to? - ✔✔✔-average daily flow.
a connection between potable water and an unapproved connection is called? - ✔✔✔-cross
contamintaion
a customer complains of a swimming pool taste and odor in the drinking water. what is the most
likely cause? - ✔✔✔-low chlorine residual
a detailed evaluation or inspection of a source of water? - ✔✔✔-sanitary survey
,C Water Operator – 600 Study Guide Exam with Questions and Answers – 100%
Solved
A device that measures the accumulative amount of a process over a 24 hour period is called? -
✔✔✔-Totalizer
a filter has a sudden increase in head loss. Media surface sealing is suspected. what action
should be taken? - ✔✔✔-evaluate plant process, jar test if needed
a glass tube partially filled with liquid that measures gas pressure is called? - ✔✔✔-manometer
a green haired superhero, whos mission was to save the planet from pollution. He could be
summoned by his teenage friends with magical rings. - ✔✔✔-Who is Captain Planet?
a greensand filter is commonly used to remove? - ✔✔✔-iron
a hypochlorite solution is being prepared in a 100 gal tank. if you add 20 gal of 5% NaOCL to the
tank, how much water should be add to the tank to get 1.5% hypochlorite solution? - ✔✔✔-47
gal
a leak is detected in the bottom valve of a chlorine cylinder. what action should be taken? -
✔✔✔-rotate the cylinder
a lime softening plant is having trouble with slow floc formation. what is the most cost effective
way to solve the problem? - ✔✔✔-recycle settled sludge
A man is bass fishing from shore and there is a constant 20 mph wind at his 11 o'clock. He is
using 8 lb mono, a bait casting reel, and a top water frog. What happens?
A) he catches a PB
,C Water Operator – 600 Study Guide Exam with Questions and Answers – 100%
Solved
B) every cast he gets a birds nest
C) he gives up and goes home
D) B & C - ✔✔✔-D
a natural underground layer of porous, water-bearing materials usually capable of yielding a
large supply of water is called? - ✔✔✔-an aquifer
a PH from 7.5 to 8.5, water temperature of 25 to 30 C, and a free ammonia concentration may
cause what condition in water? - ✔✔✔-nitrification
a positive displacement pump should never be operated________? - ✔✔✔-against a closed
discharge valve
a positive L.I. will _____ the rate of _____. - ✔✔✔-decrease / corrosion
a positive langlier index is _______. - ✔✔✔-scale forming
a positive mineral ion found in high concentration in deep well water that can cause hard boiler
scaling is? - ✔✔✔-silica
a process in which organisms with the aid of chlorophyll, convert carbon dioxide and inorganic
substances into oxygen and additional plant material, using sunlight for energy is known as? -
✔✔✔-photosynthesis
a RO plant treats 900,000 gallons of water a day. The monthly finished water production is 23
million gallons. what is the recovery rate? - ✔✔✔-85%
a sample collected for Ph measurement should be? - ✔✔✔-measured for temperature
, C Water Operator – 600 Study Guide Exam with Questions and Answers – 100%
Solved
a sample taken from a customer's tap that has not been used for a minimum of 6 hours or a
maximum of 12 hours is called? - ✔✔✔-first draw
a saturator used with sodium fluoride will have severe scaling if the water hardness is above? -
✔✔✔-10mg/l
a shorthand name for a chemical element is? - ✔✔✔-chemical symbol
a solution is acidic if there is more _____ than _______ - ✔✔✔-hydrogen ions / hydroxide ions
a steel specimen inserted into water to measure the water's corrosiveness is called? - ✔✔✔-
coupon
a substance composed of two or more elements whose composition is constant is called? -
✔✔✔-a compound
a successful method for removing H2S from water with a Ph of 9.4 is to ? - ✔✔✔-increase
aeration
a surface WTP has a medicinal taste in its finished water. What is the most likely cause? - ✔✔✔-
Phenols
a system that has at least 15 service connections, or regularly serves an average of at least 25
individuals daily at least 06 days out of the year is a ______ system? - ✔✔✔-public
a totalizer is accurate if it provides a flow rate measurement within ____ of actual flow. - ✔✔✔-
2%
Solved
_______ tends to increase corrosion - ✔✔✔-low flow
"Party on, Wayne."
"Party on, _______"? - ✔✔✔-Garth
(CA(OH)2) id the chemical formula for ? - ✔✔✔-calcium hydroxide
a "B" class WTP must have a "C" operator or higher on duty for ______. - ✔✔✔-16 hrs a day / 7
days a week
a chlorinator is experiencing low chlorine feed rate with the rate valve open. the injector
vacuum is low but increases when the rate valve is shut. what is the probable cause? - ✔✔✔-
clogged injector and insufficient injector water supply
a common membrane used in reverse osmosis water treatment is____. - ✔✔✔-cellulose
acetate
a community water system serving 350 or more persons, or having 150 or more service
connections must provide auxiliary power for operation of source treatment units and pumps at
a rate equal to? - ✔✔✔-average daily flow.
a connection between potable water and an unapproved connection is called? - ✔✔✔-cross
contamintaion
a customer complains of a swimming pool taste and odor in the drinking water. what is the most
likely cause? - ✔✔✔-low chlorine residual
a detailed evaluation or inspection of a source of water? - ✔✔✔-sanitary survey
,C Water Operator – 600 Study Guide Exam with Questions and Answers – 100%
Solved
A device that measures the accumulative amount of a process over a 24 hour period is called? -
✔✔✔-Totalizer
a filter has a sudden increase in head loss. Media surface sealing is suspected. what action
should be taken? - ✔✔✔-evaluate plant process, jar test if needed
a glass tube partially filled with liquid that measures gas pressure is called? - ✔✔✔-manometer
a green haired superhero, whos mission was to save the planet from pollution. He could be
summoned by his teenage friends with magical rings. - ✔✔✔-Who is Captain Planet?
a greensand filter is commonly used to remove? - ✔✔✔-iron
a hypochlorite solution is being prepared in a 100 gal tank. if you add 20 gal of 5% NaOCL to the
tank, how much water should be add to the tank to get 1.5% hypochlorite solution? - ✔✔✔-47
gal
a leak is detected in the bottom valve of a chlorine cylinder. what action should be taken? -
✔✔✔-rotate the cylinder
a lime softening plant is having trouble with slow floc formation. what is the most cost effective
way to solve the problem? - ✔✔✔-recycle settled sludge
A man is bass fishing from shore and there is a constant 20 mph wind at his 11 o'clock. He is
using 8 lb mono, a bait casting reel, and a top water frog. What happens?
A) he catches a PB
,C Water Operator – 600 Study Guide Exam with Questions and Answers – 100%
Solved
B) every cast he gets a birds nest
C) he gives up and goes home
D) B & C - ✔✔✔-D
a natural underground layer of porous, water-bearing materials usually capable of yielding a
large supply of water is called? - ✔✔✔-an aquifer
a PH from 7.5 to 8.5, water temperature of 25 to 30 C, and a free ammonia concentration may
cause what condition in water? - ✔✔✔-nitrification
a positive displacement pump should never be operated________? - ✔✔✔-against a closed
discharge valve
a positive L.I. will _____ the rate of _____. - ✔✔✔-decrease / corrosion
a positive langlier index is _______. - ✔✔✔-scale forming
a positive mineral ion found in high concentration in deep well water that can cause hard boiler
scaling is? - ✔✔✔-silica
a process in which organisms with the aid of chlorophyll, convert carbon dioxide and inorganic
substances into oxygen and additional plant material, using sunlight for energy is known as? -
✔✔✔-photosynthesis
a RO plant treats 900,000 gallons of water a day. The monthly finished water production is 23
million gallons. what is the recovery rate? - ✔✔✔-85%
a sample collected for Ph measurement should be? - ✔✔✔-measured for temperature
, C Water Operator – 600 Study Guide Exam with Questions and Answers – 100%
Solved
a sample taken from a customer's tap that has not been used for a minimum of 6 hours or a
maximum of 12 hours is called? - ✔✔✔-first draw
a saturator used with sodium fluoride will have severe scaling if the water hardness is above? -
✔✔✔-10mg/l
a shorthand name for a chemical element is? - ✔✔✔-chemical symbol
a solution is acidic if there is more _____ than _______ - ✔✔✔-hydrogen ions / hydroxide ions
a steel specimen inserted into water to measure the water's corrosiveness is called? - ✔✔✔-
coupon
a substance composed of two or more elements whose composition is constant is called? -
✔✔✔-a compound
a successful method for removing H2S from water with a Ph of 9.4 is to ? - ✔✔✔-increase
aeration
a surface WTP has a medicinal taste in its finished water. What is the most likely cause? - ✔✔✔-
Phenols
a system that has at least 15 service connections, or regularly serves an average of at least 25
individuals daily at least 06 days out of the year is a ______ system? - ✔✔✔-public
a totalizer is accurate if it provides a flow rate measurement within ____ of actual flow. - ✔✔✔-
2%
