Welcome to the 100 Question Water Distribution Practice Test.
Choose the best possible answer to the question.
1.
A 1 ton cylinder filled with chlorine weighs approximately?
2.
What are the areas within a traffic zone?
3.
What is a measure of a materials opposition to the flow of electric current?
4.
What is the pneumatic standard range?
5.
The cl2 residual in water may be determined by using the reagent?
6.
Pipe or Tank corrosion may be caused by?
7.
What is the purpose of a vacuum regulator?
8.
When responding to a chlorine gas leak, the responder should have a SCBA and a?
9.
The sensors that respond to liquid pressure will perform poorly if what enters the sensor?
10.
Most regulated contaminants in drinking water?
11.
The most widely used type of prime mover in a pump station is?
12.
If two different metals like copper and iron pipe are joined together, this will cause?
13.
What is the typical strength of calcium hypochlorite?
14.
Yellow hydrant body with an orange cap signals?
15.
Who may sign the confined space permit?
16.
What is the rule that sets MCL's for harmful chemicals?
17.
Lead contamination in drinking water may cause children to have altered physical and mental developments.
18.
A water system should monitor the water source for?
20.
What is the recommended free chlorine residual for the furthest point in the water distribution system?
22.
An approved backflow assembly that can be used to prevent backflow and backsiphonage is?
23.
Push joints can be used if the pipe must be pushed at an angle?
24.
Algae in a water reservoir can cause?
25.
Interior copper tubing is usually joined by?
26.
Public water systems using surface water must continuously monitor the disinfection residual entering the distribution system if serving more than?
27.
If a water system is using chlorine gas to disinfect the water, a Self Contained Breathing Apparatus (SCBA) is required. Where should the SCBA be stored?
28.
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?
29.
An autoclave will sterilize at
30.
Records of chemical analyses should be kept for?
31.
If an operator has a problem achieving adequate disinfection, a possible cause is?
32.
A public water system that uses surface water or ground water under the influence of surface water and provides filtration treatment is required to report an active violation of the filtered water turbidity standard if any turbidity measurements collected during the month exceeded?
33.
If an operator gets sodium hypochlorite on their skin or in their eyes, immediately flush with water for how long?
34.
How many minutes are in a day?
35.
Mechanical seals on a centrifugal pump?
36.
The water level below the normal level that persists after a well pump has been off for a period of time is?
37.
What type of water distribution system configuration has interconnected water mains?
38.
The maximum chlorine withdraw rate from a 1 ton cylinder is?
39.
Which is a type of joint for ductile iron pipe?
40.
How often should pump bearings be re-greased?
41.
The arrangement of water pumps in parallel is typically used to?
42.
What type of meter determines the total flow by multiplying the flow through the meter by a factor?
43.
If a fire hydrant or cap is painted black this means?
44.
What is the appropriate angle for average soils when using the sloping method for the prevention of cave-ins? (Horizontal to Vertical Distance)
45.
The number of monthly distribution system chlorines residual tests that are required to be taken are based on?
46.
Steel pipe can not corrode on the inside.
47.
If a water system fails to collect their water distribution system samples, under which public notification tier would the water system fall under?
48.
Coagulation occurs during the first
49.
When sampling for THM's, what percentage of samples must be taken at the furthest point in the distribution system?
50.
What agency establishes drinking water standards in the United States of America?
51.
What type of algae would be most likely found in nutrient rich waters?
52.
What is a closed fireline?
53.
What effects does manganese in the water have?
54.
A connection between a potable water system and a non potable water system is?
55.
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?
56.
Shoring is required in any excavation that is?
57.
A pro of chloramines is?
58.
A sample taken that represents the water at particular time and place is?
59.
An illness in infants known as methemoglobinemia, or blue baby syndrome, is attributed to?
60.
The Total Coliform Rule is based on?
61.
What gas can cause lung and skin irritation?
62.
What should be installed between a water main and a fire hydrant?
63.
What is lake stratification?
64.
Water meters that can register small flows as well as large flows are?
65.
What type of water meter is based on the Doppler effect?
66.
What is the electronic standard range?
67.
If a pump does not hold its prime, what could be wrong?
68.
At what time of the day is the age of the water stored in the distribution system tanks the lowest?
69.
How are chloramines formed?
70.
What is the purpose of bypass valves where larger size gate valves are located on the water main?
71.
The C factor, or carrying capacity of a pipe, is often reduced by?
72.
The rated flow of a water meter, as stated by the manufacture, is based on
73.
Sacrificial anodes are also known as?
74.
When digging a trench to install or repair a water main, where does the soil go?
75.
Push on Joints are unpopular and can not be assembled in the field.
76.
Water main cleaning methods include.
77.
What type of pipe joint is available in both bolted and boltless flexible pipe joint designs?
78.
What is the only acceptable breathing device to wear when handling chlorine leaks?
79.
What type of pipe will gas and oil permeate?
80.
What is the MCLG for lead in the drinking water?
81.
If using free chlorine, the dosage and exposure time to disinfect a water well is?
82.
What is the term for water samples collected at regular intervals and combined in equal volume with each other?
83.
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?
84.
How many pounds of chlorine is capable of being withdrawn from a 150lb cylinder in a day?
85.
Chlorine gas expands?
86.
What are the action levels for lead and copper?
87.
If there is a large crack in a water main and the pressure in the distribution system drops to 0 psi, what may occur?
88.
What type of oil should not be used to lubricate bearings because it forms acids as it begins to break down?
89.
What is the National Primary Drinking Water Regulations MCL for total Hexavalent Chromium (Chromium 6)
90.
Yellow hydrant body with a green cap signals?
91.
What type of water main pipe has the highest maximum working pressure?
92.
A gallon jug filled with water weighs?
93.
The most effective means of reducing atmospheric hazards in a confined space is?
94.
The lowest layer in a reservoir is?
95.
When installing the regulator to a chlorine cylinder, the lead or fiber washer used to prevent leaked should be changed?
96.
How many feet must a ladder extend above the trench?
97.
What type of pipe joint consists of two machined surfaces?
98.
What does MCL stand for?
99.
The more hydrogen ions
100.
What device serves the same function of the packing?
If there are any question or answer irregularities please email Contact@waternuggets.com Please remember questions are randomized, so specifics would be very helpful.
