Welcome to the 25 Question Water Distribution Practice Test.
Choose the best possible answer to the question.
1.
An underground geological water bearing formation is?
2.
What method(s) should be used to prevent cave-ins while digging or trenching?
3.
A fire hydrant that has a yellow body and a red cap represents
4.
Thrust blocks are installed to?
5.
The type of water main pipe most appropriate for river crossings and rugged terrain is?
6.
Where are the sampling points for required sampling of organic (except for THM's) in a community water system?
7.
A confined space is not designed for continuous occupancy and has limited means of entrance and exit.
8.
Critical safeguard(s) for a water distribution system are?
9.
The chlorine room should be constructed so it can only be entered from?
11.
The limnetic zone of a lake is?
12.
You have a new gasoline powered diaphragm pump and are using heavy-duty spiral wire reinforced suction hose. What is the practical maximum height at which to set the pump above the water level?
13.
Milky water that clears in time from the bottom up is a possible indication of?
14.
Hard water scale is usually caused by?
15.
What element is found in all acids?
16.
The number of monthly distribution system chlorines residual tests that are required to be taken are based on?
17.
How many times heavier than air is chlorine gas?
18.
What percentage of the earth's surface is covered in water?
19.
Permit required confined space entry requires a chest or full body harness and a retrieval line.
20.
What is the greatest problem for most water distribution shut off valves?
21.
Per Capita Water Use is?
22.
Inspection of a pump shaft and coupling should be performed?
23.
What gas can cause lung and skin irritation?
24.
What type of water meter is based on the Doppler effect?
25.
A portable ladder must extend how many feet above the upper surface of an excavated trench?
