Welcome to the 25 Question Water Distribution Practice Test.
Choose the best possible answer to the question.
1.
A grout seal should be?
2.
Although velocity head can usually be ignored, it be considered when it is what percent of pressure head?
3.
What is the term for water samples collected at regular intervals and combined in equal volume with each other?
4.
How high can a perfect vacuum lift water at sea level?
5.
The C factor, or carrying capacity of a pipe, is often reduced by?
6.
What thrust control is easy to use, especially in locations where existing utilities or structures are numerous?
7.
Newly installed water mains should be flushed
8.
Where are the sampling points for required sampling of organic (except for THM's) in a community water system?
9.
What rule that sets MCL's for harmful chemicals?
10.
What agency establishes drinking water standards in the United States of America?
11.
When using Chlorine tablets to disinfect a pipeline during installation, the tablets should be placed where?
12.
What does MCLG stand for?
13.
What is the MCLG for coliform bacteria?
14.
What is the term used for the remaining free chlorine in a water system after the chlorine demand has been met?
15.
What very important factor prevents contamination of a ground water well?
16.
What is the highest degree of backlfow protection?
17.
What type of oil should not be used to lubricate bearings because it forms acids as it begins to break down?
18.
When a control switch that is operated by changes in pressure is located too close to a pump station what problem may occur?
19.
The AWWA recommends that 5/8" water meters be tested every?
20.
What is the most common problem with a hypochlorinator?
21.
What can be devolved by measuring the pressure along a pipeline?
22.
What type of pipe joint is available in both bolted and boltless flexible pipe joint designs?
23.
What type of sample should always be collected for determining the presence of coliform bacteria?
24.
On a brand new pump, when should the first oil change be done?
25.
What is used on the outside joint space of a steel cylinder concrete in order to protect the joint rings from external corrosion?
