Welcome to the 25 Question Water Distribution Practice Test.
Choose the best possible answer to the question.
1.
Where ground frost is expected, how far away from any wall should the riser pipes be installed in a meter pit?
2.
If a pump does not hold its prime, what could be wrong?
3.
What can be used to control scaling, but can never be used to control corrosion?
4.
Aerobic bacteria live?
5.
The chlorine room should be constructed so it can only be entered from?
6.
A gallon jug filled with water weighs?
7.
What is the minimum contact time when disinfecting water mains using the chlorine slug method?
8.
One of the reasons to choose chloramines as a disinfectant is in order to
9.
The total dynamic head at which a pump must operate at is the sum of the static head and the head due to friction loss.
10.
Records of turbidity analysis must be kept for at least?
12.
A possible cause of a complaint of cloudy water is?
13.
When a water main needs to be depressurized is must be what?
14.
What is the ideal indicator for pathogens in the drinking water supply?
15.
Yellow hydrant body with an orange cap signals?
16.
How many times heavier than air is chlorine gas?
17.
What valve should be used when it is needed to supply water to different pressure zones?
18.
Friction head loss can be calculated using tables based on?
19.
A type of joint for polyvinyl chloride piping would be a bell and spigot.
20.
Mechanical seals are most appropriate for pumps operating under what condition?
21.
Haloacetic Acids (haa5) are formed through?
22.
If a lane on a road needs to be closed due to an excavation and the speed limit is 45mph, how many cones are required to divert traffic?
23.
Venturi meters are used for?
24.
What test is used to indicate the corrosion or scaling rate?
25.
What type of fires involve energized electrical equipment such as starters, breakers, and motors?
