Welcome to the 25 Question Water Distribution Practice Test.
Choose the best possible answer to the question.
1.
What chemical decreases corrosion rates?
2.
How is the capacity of a centrifugal pump related to the total head?
3.
An onsite sodium hypochlorite generation system creates liquid chlorine by combining?
4.
How many minutes are in a day?
5.
When using Chlorine tablets to disinfect a pipeline during installation, the tablets should be placed where?
6.
A pro of chloramines is?
7.
What type of water service line pipe material is no longer acceptable for drinking water?
8.
What type of pipe is plastic?
9.
How many times heavier than air is chlorine gas?
10.
What type of pipe joint permits flexible pipe alignment, is inexpensive to manufacture, and is easy to assemble?
11.
Turbidity in the drinking water system can not exceed?
12.
What is the term that defines the inactivation of pathogenic organisms in water?
13.
When digging a trench to install or repair a water main, where does the soil go?
14.
Water filters in the water treatment processes are primarily used for removing or reducing?
15.
What can be devolved by measuring the pressure along a pipeline?
16.
Steel pipe can not corrode on the inside.
17.
Identify which is a Cross-Connection hazard in a drinking water system.
18.
What tier violation has the most critical impact on human health and notification is immediate?
19.
Free chlorine residual values are based on contact time of at least?
20.
When water is being pumped from a well and the water table drops, this is known as?
21.
What is used as an indicator to determine possible contamination in the drinking water?
22.
The normal pH range of surface and ground water is?
23.
Uncombined chlorine that remains in the water after chlorine has been applied and allowed to react is?
24.
If there is a large crack in a water main and the pressure in the distribution system drops to 0 psi, what may occur?
25.
To ease installation of impeller wear rings, they can be?
