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This 5 question practice test is a demo of the full, 100 question, practice test available to members. The full practice test is randomly generated from a database of hundreds of questions, meaning no two test are ever exactly the same.
This test is designed to simulate the actual Water Distribution exam as closely as possible. These questions are similar to, but not the same as, the questions you are likely to encounter on your certification exam.
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Question 1 of 5
1. Question
Which of the following is a measurement of head?
Correct
Head is measured in feet and pressure in pounds per square inch (psi). To convert from pressure in pounds per square inch to head in feet, multiply pressure by 2.31 (43 psi x 2.31 = 100 ft.)
Incorrect
Head is measured in feet and pressure in pounds per square inch (psi). To convert from pressure in pounds per square inch to head in feet, multiply pressure by 2.31 (43 psi x 2.31 = 100 ft.)
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Question 2 of 5
2. Question
What is a plat?
Correct
A plat is a scaled map showing the divisions of a piece of land. Plats typically show the distance and bearing between property section corners, sometimes including topographic or vegetation information. City, town, or village plats show subdivisions into blocks with streets and alleys. More detailed plats often split blocks into individual lots, usually for the purpose of selling the described lots; this has become known as subdivision. After a plat is filed, legal descriptions can refer to block and lot-numbers rather than portions of sections.
Incorrect
A plat is a scaled map showing the divisions of a piece of land. Plats typically show the distance and bearing between property section corners, sometimes including topographic or vegetation information. City, town, or village plats show subdivisions into blocks with streets and alleys. More detailed plats often split blocks into individual lots, usually for the purpose of selling the described lots; this has become known as subdivision. After a plat is filed, legal descriptions can refer to block and lot-numbers rather than portions of sections.
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Question 3 of 5
3. Question
Which valve is used to prevent a pipe from collapsing?
Correct
A vacuum may form as a pipe is being drained. This can lead to a complete collapse of the pipe. Vacuum relief valves open to allow air into the system in order to protect the pipe as water is being drained. Both air and vacuum relief valves are usually combined in one unit. These valves are typically installed at high points within a system, where air pockets are most likely to form.
Incorrect
A vacuum may form as a pipe is being drained. This can lead to a complete collapse of the pipe. Vacuum relief valves open to allow air into the system in order to protect the pipe as water is being drained. Both air and vacuum relief valves are usually combined in one unit. These valves are typically installed at high points within a system, where air pockets are most likely to form.
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Question 4 of 5
4. Question
What is the optimal level of protection for the exterior of a coated steel pipe?
Correct
Cathodic Protection is a technique used to control the corrosion of a metal surface by making it the cathode of an electrochemical cell. A simple method of protection connects the metal to be protected to a more easily corroded “sacrificial metal” to act as the anode.
Incorrect
Cathodic Protection is a technique used to control the corrosion of a metal surface by making it the cathode of an electrochemical cell. A simple method of protection connects the metal to be protected to a more easily corroded “sacrificial metal” to act as the anode.
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Question 5 of 5
5. Question
At what time of day is the water stored in the distribution system the oldest?
Correct
Storage tanks are typically filled and emptied quickly during the day. As water usage declines during the evening hours tanks are filled and drained at a much slower rate.
The age of the water in the system affects the water quality. As the water ages, the level of residual disinfectant decreases. At the same time, the level of disinfection byproducts (DBPs), such as trihalomethanes and haloacetic acids, may increase.
Frequent water turnover in the system helps to ensure higher levels of residual disinfectant and lower levels of DBPs.
Incorrect
Storage tanks are typically filled and emptied quickly during the day. As water usage declines during the evening hours tanks are filled and drained at a much slower rate.
The age of the water in the system affects the water quality. As the water ages, the level of residual disinfectant decreases. At the same time, the level of disinfection byproducts (DBPs), such as trihalomethanes and haloacetic acids, may increase.
Frequent water turnover in the system helps to ensure higher levels of residual disinfectant and lower levels of DBPs.