Welcome to the 25 Question Water Distribution Practice Test.
Choose the best possible answer to the question.
1.
Water main cleaning methods include.
2.
Dry barrel fire hydrants are used in what type of environment?
3.
How many minutes are in a day?
4.
What provides a profile of hazardous mixtures and substances?
5.
The type of water main pipe most appropriate for river crossings and rugged terrain is?
6.
The profundal zone of a lake is?
7.
What is the minimum separation for an Air Gap?
8.
What is the purpose of bypass valves where larger size gate valves are located on the water main?
9.
What is applied to electrodes placed in the water of a water storage tank?
10.
If algae in the water source is clogging the filters of the water plant the most probable solution is to?
11.
Water mains should only be flushed when there is an apparent water quality issue.
12.
Sacrificial anodes are also known as?
13.
What is the MCL for coliform bacteria?
14.
How long can samples being tested for coliforms be refrigerated before analysis?
15.
What type of personal protective equipment should an operator wear when handling hypochlorite?
16.
The normal pH range of surface and ground water is?
17.
If an operator notices the bearings on a centrifugal pump are excessively hot, what is the most likely cause?
18.
How is the capacity of a centrifugal pump related to the total head?
19.
Thrust blocks are not required when?
20.
What is the unit of measurement used to express velocity in a water pipe?
21.
The arrangement of water pumps in parallel is typically used to?
22.
Define the term drawdown?
23.
What is the best mechanical compacting equipment for deep narrow trenches?
24.
Thrust blocks are installed to?
25.
What is the only MCL that varies with the temperature?
