Welcome to the 25 Question Water Distribution Practice Test.
Choose the best possible answer to the question.
1.
What can be done to prevent cavitation form occurring?
2.
What valve should be used when it is needed to supply water to different pressure zones?
3.
What organisms have the greatest resistance to chlorine?
4.
The Safe Drinking Water Act sets?
5.
Venturi meters are used for?
6.
What is the sample size for lead and copper analysis?
7.
Water loss between 10-15% is accepted due to leaks, hydrant water theft, failing water meters, and illegal connections.
8.
If only two rings of packing are used in the stuffing box, the joints should be?
9.
What is the ideal indicator for pathogens in the drinking water supply?
10.
The amount of power in watts required during a certain time period is?
11.
Sacrificial anodes are also known as?
12.
What type of meter is usually 2" and under and sensitive to low flow rates?
13.
A ladder is required in all excavations that are greater than?
14.
The disinfection power of chlorine goes down as the pH decreases?
15.
Acid should always be diluted into water.
16.
The normal pH range of surface and ground water is?
17.
The most widely used type of prime mover in a pump station is?
18.
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?
19.
Water taste and odor complaints can come from
20.
Hard water scale is usually caused by?
21.
What valve can go from fully open to fully closed with 1/4 turn?
22.
Some water storage tanks have aviation warning lights on them. The FAA regulations require the bulbs to be replaced before they reach what percentage of their normal life expectancy?
23.
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?
24.
What type of pipe requires special external protection in high-chloride soil?
25.
What should be determined first when designing a water pump station?