Welcome to the 50 Question Water Distribution Practice Test.
Choose the best possible answer to the question.
1.
Why are fire hydrants commonly color coded?
2.
Where should the pressure gauges be connected on the suction and discharge sides of a pump?
3.
If an operator has a problem achieving adequate disinfection, a possible cause is?
4.
What is the maximum contaminant level goal (MCLG) for a known or suspected carcinogen?
5.
What should be determined first when designing a water pump station?
6.
Haloacetic Acids (haa5) are formed through?
7.
One of the reasons to choose chloramines as a disinfectant is in order to
8.
Water in a storage tank on a hill above a town has energy by virtue of its elevation. This difference from the tank to the town is called?
9.
Water distribution system piping should be rated to withstand how many times higher than normal operating pressure?
10.
What gas can cause lung and skin irritation?
11.
What is a prescriptive water right?
12.
What type of map should not overlap each other?
13.
Why would a zinc coating be applied to steel water pipes and water tanks?
14.
An illness in infants known as methemoglobinemia, or blue baby syndrome, is attributed to?
15.
What is the ideal indicator for pathogens in the drinking water supply?
16.
An underground geological water bearing formation is?
17.
What is used as an indicator to determine possible contamination in the drinking water?
18.
The minimum cover over a water service in a warm climate is?
19.
Class B fire involves?
20.
What is the MCLG for lead in the drinking water?
21.
Valve opening and closing is the main cause of hydraulic transient in a water distribution system.
22.
What type of pipe joint is used in an area with hills or earthquakes to make sure joints do not sperate?
23.
If two different metals like copper and iron pipe are joined together, this will cause?
24.
The proper emergency kit for a TON chlorine cylinder is?
25.
If air is used to generate ozone, which percentage of the air is usually converted to ozone?
26.
What is a measure of a materials opposition to the flow of electric current?
27.
Testing for individual pathogens would be very expensive. Instead, test for an indicator organism. What organism should be tested for?
28.
Which of these is a displacement meter, which measure flow by registering the number of times that the meter chamber is filled and empty?
29.
What is the pneumatic standard range?
30.
What is a closed fireline?
31.
If a fire hydrant or cap is painted black this means?
32.
Turbidity in the drinking water system can not exceed?
33.
Thrust blocks are not required when?
34.
What type of sample should always be collected for determining the presence of coliform bacteria?
35.
What parts on a centrifugal pump restricts flow between the impeller discharge and suction areas?
36.
When entering a permitted confined space entry structure, always complete a permit and?
37.
What is the electronic standard range?
38.
Total dynamic head against which a pump must operate is?
39.
How many feet must a ladder extend above the trench?
40.
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?
41.
What does hydrogen sulfide smell like?
42.
Sacrificial anodes are also known as?
43.
A pro of chloramines is?
44.
What effects does manganese in the water have?
45.
What is the purpose of a vacuum regulator?
46.
A competent person must inspect excavations continuously while workers are in the excavation.
47.
What tier violation has the most critical impact on human health and notification is immediate?
48.
What type of water service line pipe material is no longer acceptable for drinking water?
49.
Who is the most responsible for your safety while on the job?
50.
Coagulation occurs during the first
