Welcome to the 25 Question Water Distribution Practice Test.
Choose the best possible answer to the question.
1.
What present in water will increase corrosion rates?
2.
All water system sampling site plans must be approved by?
3.
The more hydrogen ions
4.
What type of oil should not be used to lubricate bearings because it forms acids as it begins to break down?
5.
Algae in a water reservoir can cause?
6.
What is the only MCL that varies with the temperature?
7.
What is the maximum theoretical suction lift of a centrifugal pump at sea level?
8.
Water that requires a large amount of soap to get a lather is?
10.
If a water main can not be installed at an adequate depth to prevent freezing, Styrofoam insolation board can be used to protect the water in the pipe from freezing. How far above the pipe does the Styrofoam insulation need to be installed?
11.
Hard water scale is usually caused by?
12.
Where do good public relations start for any water district?
13.
A type of joint for polyvinyl chloride piping would be a bell and spigot.
14.
A sample taken that represents the water at particular time and place is?
15.
What is an example of Tier III violation.
16.
How many pounds of chlorine is capable of being withdrawn from a 150lb cylinder in a day?
18.
What is the purpose of sodium thiosulfate in a water sample bottle?
19.
When disinfecting water mains with tablets what should the concentration be and for how long?
20.
Where should the pressure gauges be connected on the suction and discharge sides of a pump?
21.
What provides a profile of hazardous mixtures and substances?
22.
A measurement of the interior roughness of a pipe is?
23.
Opening the discharge valve one full turn on a chlorine cylinder will?
24.
What is the National Primary Drinking Water Regulations MCL for total Hexavalent Chromium (Chromium 6)
25.
The minimum cover over a water main below a road in a warm climate is?
