WATER DISTRIBUTION OPERATOR EXAM BUNDLE!!WATER DISTRIBUTION OPERATOR EXAM BUNDLE!!WATER DISTRIBUTION OPERATOR EXAM BUNDLE!!WATER DISTRIBUTION OPERATOR EXAM BUNDLE!!WATER DISTRIBUTION OPERATOR EXAM BUNDLE!!WATER DISTRIBUTION OPERATOR EXAM BUNDLE!!WATER DISTRIBUTION OPERATOR EXAM BUNDLE!!WATER...
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A noisy or vibrating valve may be an indication of what? - ANSWER Cavitation The selective destruction or inactivation of pathogenic organisms is - ANSWER Disinfection Pathogenic organisms can be removed from water, killed, or inactivated by - ANSWER Filtration The most commonly used distri...
Voorbeeld 1 van de 4 pagina's
In winkelwagenA noisy or vibrating valve may be an indication of what? - ANSWER Cavitation The selective destruction or inactivation of pathogenic organisms is - ANSWER Disinfection Pathogenic organisms can be removed from water, killed, or inactivated by - ANSWER Filtration The most commonly used distri...
The only absolutely reliable method of backflow prevention is the use of - ANSWER Air Gap The bubbles formed in a positive multiple tube fermentation test are - ANSWER Carbon Dioxide The maximum rate of withdrawal of gas from a 150lb chlorine cylinder in 24-hours is - ANSWER 40 lbs If you e...
Voorbeeld 1 van de 4 pagina's
In winkelwagenThe only absolutely reliable method of backflow prevention is the use of - ANSWER Air Gap The bubbles formed in a positive multiple tube fermentation test are - ANSWER Carbon Dioxide The maximum rate of withdrawal of gas from a 150lb chlorine cylinder in 24-hours is - ANSWER 40 lbs If you e...
The pH of 4 is - ANSWER An acid The preserve & maintain a groundwater supply source, the operator must - ANSWER Be careful not to overtax aquifers capability to supply water What chemical is contained in the Bac T bottles? - ANSWER Sodium Thiosulfate A standpipe - ANSWER Height is greater t...
Voorbeeld 1 van de 4 pagina's
In winkelwagenThe pH of 4 is - ANSWER An acid The preserve & maintain a groundwater supply source, the operator must - ANSWER Be careful not to overtax aquifers capability to supply water What chemical is contained in the Bac T bottles? - ANSWER Sodium Thiosulfate A standpipe - ANSWER Height is greater t...
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Back siphonage - ANSWER backflow due to negative or reduced pressure in water system. occurs during low pressure events such as a line leak Reverse flow caused by a loss of supply pressure Back Pressure - ANSWER Is caused when a potable water system is connected to a non potable supply operati...
Voorbeeld 2 van de 15 pagina's
In winkelwagenBack siphonage - ANSWER backflow due to negative or reduced pressure in water system. occurs during low pressure events such as a line leak Reverse flow caused by a loss of supply pressure Back Pressure - ANSWER Is caused when a potable water system is connected to a non potable supply operati...
A check valve must - ANSWER Be able to withstand hydraulic shock loads Excessive amounts of iron & manganese in drinking water are objectionable because they - ANSWER Stain Clothes Check valve important feature(s) must - ANSWER Must close watertight Routine service calls frequently to a wel...
Voorbeeld 1 van de 4 pagina's
In winkelwagenA check valve must - ANSWER Be able to withstand hydraulic shock loads Excessive amounts of iron & manganese in drinking water are objectionable because they - ANSWER Stain Clothes Check valve important feature(s) must - ANSWER Must close watertight Routine service calls frequently to a wel...
Which process converts ammonia to nitrite and nitrate? - ANSWER Nitrification What is the maximum advisable rate of chlorine gas removal from a 150- pound cylinder? - ANSWER 40 pounds per day What is a type of positive displacement water meter? - ANSWER Nutating- disk meter What is a power-...
Voorbeeld 2 van de 6 pagina's
In winkelwagenWhich process converts ammonia to nitrite and nitrate? - ANSWER Nitrification What is the maximum advisable rate of chlorine gas removal from a 150- pound cylinder? - ANSWER 40 pounds per day What is a type of positive displacement water meter? - ANSWER Nutating- disk meter What is a power-...
Potable water may be defined as: a. Any water that occasionally may be polluted from another source b. Any water that, according to recognized standards, is safe for consumption c. Water high in organic content d. Water that has been transported from outside the service area - ANSWER b). Any w...
Voorbeeld 2 van de 6 pagina's
In winkelwagenPotable water may be defined as: a. Any water that occasionally may be polluted from another source b. Any water that, according to recognized standards, is safe for consumption c. Water high in organic content d. Water that has been transported from outside the service area - ANSWER b). Any w...
What the primary objective of water distribution operators - ANSWER deliver safe and pleasant drinking water to the consumers what should the distribution operator do if there is a complaint about the water? - ANSWER record the info and have the problem investigated and notify the person complain...
Voorbeeld 2 van de 7 pagina's
In winkelwagenWhat the primary objective of water distribution operators - ANSWER deliver safe and pleasant drinking water to the consumers what should the distribution operator do if there is a complaint about the water? - ANSWER record the info and have the problem investigated and notify the person complain...
Distribution systems are usually laid out in which of the following patterns besides Tree shaped and Grid designs? a. Loops and/or circular designs b. Vertical designs without backflow prevention devices c. Horizontal lines that flow into open ponds then back into a closed pipe d. Horizontal lin...
Voorbeeld 2 van de 8 pagina's
In winkelwagenDistribution systems are usually laid out in which of the following patterns besides Tree shaped and Grid designs? a. Loops and/or circular designs b. Vertical designs without backflow prevention devices c. Horizontal lines that flow into open ponds then back into a closed pipe d. Horizontal lin...
How many gallons of water per day does the average American family of 4 use? - ANSWER 320 gallons Most of Earth's water is _____. - ANSWER unsuitable for drinking most of earths freshwater is______ - ANSWER Stored in glaciers and ice caps most saltwater use is____ - ANSWER the power genera...
Voorbeeld 1 van de 1 pagina's
In winkelwagenHow many gallons of water per day does the average American family of 4 use? - ANSWER 320 gallons Most of Earth's water is _____. - ANSWER unsuitable for drinking most of earths freshwater is______ - ANSWER Stored in glaciers and ice caps most saltwater use is____ - ANSWER the power genera...
A factor or value used to indicate the smoothness of the interior of a pipe - ANSWER Cfactor Major parts of water distribution - ANSWER Pipes, storage facilities, pumping stations, valves ,fire hydrants, meters, and other appurtenances Main purpose of water storage facilities - ANSWER To provi...
Voorbeeld 2 van de 5 pagina's
In winkelwagenA factor or value used to indicate the smoothness of the interior of a pipe - ANSWER Cfactor Major parts of water distribution - ANSWER Pipes, storage facilities, pumping stations, valves ,fire hydrants, meters, and other appurtenances Main purpose of water storage facilities - ANSWER To provi...
Which is not a type of water ? - ANSWER Apparent Which layer of a lake is considered nutrient poor? - ANSWER Hypolimnion (Bottom Layer) Copper Sulfate (Blue Stone) is used in lake management to ? - ANSWER Control Algae Bloom The Surface Water Treatment Rule requires that - ANSWER 3-log remo...
Voorbeeld 2 van de 7 pagina's
In winkelwagenWhich is not a type of water ? - ANSWER Apparent Which layer of a lake is considered nutrient poor? - ANSWER Hypolimnion (Bottom Layer) Copper Sulfate (Blue Stone) is used in lake management to ? - ANSWER Control Algae Bloom The Surface Water Treatment Rule requires that - ANSWER 3-log remo...
A 6-in. pipeline needs to be flushed. If the desired length of pipeline to be flushed is 316 ft, how many minutes will it take to flush the line at 31 gpm? a. 10 minutes b. 15 minutes c. 30 minutes d. 60 minutes - ANSWER Answer: b. 15 minutes What is the area of a trench that is 22.4 ft lon...
Voorbeeld 3 van de 17 pagina's
In winkelwagenA 6-in. pipeline needs to be flushed. If the desired length of pipeline to be flushed is 316 ft, how many minutes will it take to flush the line at 31 gpm? a. 10 minutes b. 15 minutes c. 30 minutes d. 60 minutes - ANSWER Answer: b. 15 minutes What is the area of a trench that is 22.4 ft lon...
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 cus...
Voorbeeld 2 van de 9 pagina's
In winkelwagenWhat 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 cus...
Which device measures the hydrogen ion activity in a solution? - ANSWER PH Meter What is the purpose of a shaft sleeve in a centrifugal pump? - ANSWER Protects the sleeve from damage What is a nutating disc - ANSWER Type of water meter for small diameter domestic service what will happen to...
Voorbeeld 2 van de 9 pagina's
In winkelwagenWhich device measures the hydrogen ion activity in a solution? - ANSWER PH Meter What is the purpose of a shaft sleeve in a centrifugal pump? - ANSWER Protects the sleeve from damage What is a nutating disc - ANSWER Type of water meter for small diameter domestic service what will happen to...
What is the federal law that protects public water supplies from harmful contaminants? - ANSWER SDWA Safe Drinking Water Act MCL stands for - ANSWER Maximum Contaminant Level True or False? Primary regulations are mandatory - ANSWER TRUE Secondary regulations are about what 3 things? - A...
Voorbeeld 2 van de 10 pagina's
In winkelwagenWhat is the federal law that protects public water supplies from harmful contaminants? - ANSWER SDWA Safe Drinking Water Act MCL stands for - ANSWER Maximum Contaminant Level True or False? Primary regulations are mandatory - ANSWER TRUE Secondary regulations are about what 3 things? - A...
What do water distribution system operators have the responsibility for? - ANSWER The health and well-being of the community they serve Frequently the water supplier tries to maintain specific minimum target __________________ throughput the distribution system. - ANSWER Water pressure (20 PSI mi...
Voorbeeld 2 van de 5 pagina's
In winkelwagenWhat do water distribution system operators have the responsibility for? - ANSWER The health and well-being of the community they serve Frequently the water supplier tries to maintain specific minimum target __________________ throughput the distribution system. - ANSWER Water pressure (20 PSI mi...
The minimum and maximum chloride residual in a water distribution system is ? - ANSWER 0.2 mg/l and 4mg/L of free chlorine Nitrate may not exceed what concentration when tested yearly for a groundwater treatment plant ? - ANSWER 10 mg/L The minimum number of total coliform samples that must be...
Voorbeeld 2 van de 5 pagina's
In winkelwagenThe minimum and maximum chloride residual in a water distribution system is ? - ANSWER 0.2 mg/l and 4mg/L of free chlorine Nitrate may not exceed what concentration when tested yearly for a groundwater treatment plant ? - ANSWER 10 mg/L The minimum number of total coliform samples that must be...
Potable water may be defined as? - ANSWER Any water that according to recognized standard is safe for human consumption. Preventing surface contamination from entering a drinking water well is purpose of the? - ANSWER Sanitary Seal Pure water will exhibit a pH value of? - ANSWER 7.0 A pH re...
Voorbeeld 2 van de 9 pagina's
In winkelwagenPotable water may be defined as? - ANSWER Any water that according to recognized standard is safe for human consumption. Preventing surface contamination from entering a drinking water well is purpose of the? - ANSWER Sanitary Seal Pure water will exhibit a pH value of? - ANSWER 7.0 A pH re...
Potable water may be defined as? - ANSWER Any water that according to recognized standard is safe for human consumption. Preventing surface contamination from entering a drinking water well is purpose of the? - ANSWER Sanitary Seal Pure water will exhibit a pH value of? - ANSWER 7.0 A pH re...
Voorbeeld 2 van de 9 pagina's
In winkelwagenPotable water may be defined as? - ANSWER Any water that according to recognized standard is safe for human consumption. Preventing surface contamination from entering a drinking water well is purpose of the? - ANSWER Sanitary Seal Pure water will exhibit a pH value of? - ANSWER 7.0 A pH re...
What is the maximum disinfecting residual for chlorine - ANSWER 4ppm (mg/l) Primary health effect associated with nitrates in water? - ANSWER "Blue Baby Syndrome" (methemoglobinemia) Maximum contaminate level for fluoride - ANSWER 4ppm (mg/l) Maximum contaminate level for nitrate? - ANSWE...
Voorbeeld 1 van de 3 pagina's
In winkelwagenWhat is the maximum disinfecting residual for chlorine - ANSWER 4ppm (mg/l) Primary health effect associated with nitrates in water? - ANSWER "Blue Baby Syndrome" (methemoglobinemia) Maximum contaminate level for fluoride - ANSWER 4ppm (mg/l) Maximum contaminate level for nitrate? - ANSWE...
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