Welcome to the 50 Question Water Distribution Practice Test.
Choose the best possible answer to the question.
1.
Where are water meters usually installed?
2.
What is atmospheric pressure at sea level?
3.
On a brand new pump, when should the first oil change be done?
5.
What corrosion inhibitor is most effective in control of lead in a distribution system?
6.
The more hydroxide ions
7.
Valve opening and closing is the main cause of hydraulic transient in a water distribution system.
8.
The AWWA recommends that 5/8" water meters be tested every?
9.
Friction in a pipe can cause?
10.
Free chlorine residual values are based on contact time of at least?
11.
When digging a trench to install or repair a water main, where does the soil go?
12.
What is the minimum velocity that a water main should be flushed?
13.
What is the electronic standard range?
14.
How much chlorine should be used when swabbing new water lines?
15.
The type of pipe typically used for very large water mains is?
16.
Records of turbidity analysis must be kept for at least?
17.
Surge tanks in the water system are used for?
18.
Minimum required water pressure is?
19.
Lead contamination in drinking water may cause children to have altered physical and mental developments.
20.
What is used as an indicator to determine possible contamination in the drinking water?
21.
The IDLH (immediately dangerous to life and health) value for chlorine is?
22.
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?
23.
What type of meter is usually 2" and under and sensitive to low flow rates?
24.
Inspection of a pump shaft and coupling should be performed?
25.
The sensors that respond to liquid pressure will perform poorly if what enters the sensor?
26.
How often should pump bearings be re-greased?
27.
The arrangement of water pumps in parallel is typically used to?
28.
A pro of chloramines is?
29.
One of the best ways to prevent freezing in a storage tank is to?
31.
What rule that sets MCL's for harmful chemicals?
32.
What should be determined first when designing a water pump station?
33.
What type of pipe requires special external protection in high-chloride soil?
34.
The minimum desired water pressure is?
35.
What type of joint has moderate deflection and the gaskets absorb vibration and pipe movement?
36.
How high can a perfect vacuum lift water at sea level?
37.
What is the MCLG for coliform bacteria?
38.
Meters that work over a wide range of flows are known as?
39.
What describes the discharge rate of a piston style pump?
40.
What chemical can be added to the water system to sequester Iron and Manganese?
41.
What is a measure of a materials opposition to the flow of electric current?
42.
A water sample should be analyzed for a chlorine residual immediately, but if not the operator can analyze the sample for a chlorine residual within?
43.
If a bac-T sample comes back positive, the water supplier needs to?
44.
Who should be contacted to ensure proper disposal of water coming from the ground during trenching?
45.
One of the reasons to choose chloramines as a disinfectant is in order to
46.
What device found in labs sterilizes by using pressurized steam?
47.
The outlet of a forced ventilation system for a chlorinator room she be located?
48.
What type of fires involve energized electrical equipment such as starters, breakers, and motors?
49.
Which of the following type of pipe is most prone to sliding out of a push on joint if it is not firmly in place?
