Welcome to the 50 Question Water Distribution Practice Test.
Choose the best possible answer to the question.
1.
If a fire hydrant or cap is painted black this means?
2.
Where ground frost is expected, how far away from any wall should the riser pipes be installed in a meter pit?
3.
What is the most common water complaint?
4.
Chlorine gas is what color?
5.
How is the capacity of a centrifugal pump related to the total head?
6.
Water taste and odor complaints can come from
7.
Pipe strength is expressed in?
8.
How much deflection is allowed for AC couplings that are 3" to 12" in diameter?
9.
The slope method to prevent trench cave ins require what slope ratio?
10.
A pro of chloramines is?
11.
Although velocity head can usually be ignored, it be considered when it is what percent of pressure head?
12.
A measurement of the interior roughness of a pipe is?
13.
The AWWA recommends that 5/8" water meters be tested every?
14.
Hydrogen Sulfide is a dangerous gas that has a rotten egg odor and can be deadly to a water operator. What should you do if you encounter the smell?
15.
What tier violation has the most critical impact on human health and notification is immediate?
16.
Which of these is a displacement meter, which measure flow by registering the number of times that the meter chamber is filled and empty?
17.
A pump shafts main function is to?
18.
Water loss between 10-15% is accepted due to leaks, hydrant water theft, failing water meters, and illegal connections.
19.
The fusible metal plugs on chlorine containers are designed to melt at what temperatures?
20.
According to the Surface Water Treatment Rule, water systems serving a population of more than 500 persons must sample the filtered water for turbidity every?
21.
What effect will caustic soda have on water?
22.
The Safe Drinking Water Act defines a public water system that supplies piped water for human consumption as one that has...
23.
A sample taken that represents the water at particular time and place is?
24.
What type of oil should not be used to lubricate bearings because it forms acids as it begins to break down?
25.
The ISO recommends that non-looped water mains connected to fire hydrants have a diameter of at least?
26.
One of the reasons to choose chloramines as a disinfectant is in order to
27.
Class C fire involves?
28.
Water filters in the water treatment processes are primarily used for removing or reducing?
29.
Push joints can be used if the pipe must be pushed at an angle?
30.
Where are the sampling points for required sampling of organic (except for THM's) in a community water system?
31.
A 1 ton cylinder filled with chlorine weighs approximately?
32.
What is a part of the well construction that is used to protect the aquifer, that is space between the drill hole and the well's protective casing?
33.
Critical safeguard(s) for a water distribution system are?
34.
A dry barrel fire hydrant is used to?
35.
An autoclave will sterilize at
36.
If ammonia vapor is passed over a chlorine leak from a cylinder valve, the leak is indicate by
37.
What is the ideal indicator for pathogens in the drinking water supply?
38.
A water system should monitor the water source for?
40.
Lead contamination in drinking water may cause children to have altered physical and mental developments.
41.
What contributes to the creation of algae blooms?
42.
How much chlorine should be used when swabbing new water lines?
43.
Class B fire involves?
44.
An onsite sodium hypochlorite generation system creates liquid chlorine by combining?
45.
Water contaminated with Haloacetic Acids (haa5) may cause?
46.
The more hydroxide ions
47.
What is used as an indicator to determine possible contamination in the drinking water?
48.
What is the term for water samples collected at regular intervals and combined in equal volume with each other?
49.
Compressive fittings used with copper or plastic tubing seal by using?
50.
Water mains should only be flushed when there is an apparent water quality issue.
