Welcome to the 50 Question Water Distribution Practice Test.
Choose the best possible answer to the question.
1.
An underground geological water bearing formation is?
2.
The sensors that respond to liquid pressure will perform poorly if what enters the sensor?
4.
Almost all methods used to aerate a reservoir include?
5.
What type of fires involve energized electrical equipment such as starters, breakers, and motors?
6.
What is a primary indicator of bearing failure on a water pump?
7.
How much deeper below the grade line of a pipe bottom should a trench be excavated if it is being dug in a rock formation?
8.
Turbidity in the drinking water system can not exceed?
9.
A major break in a water main can assist the distribution operator to
10.
What can be devolved by measuring the pressure along a pipeline?
11.
At what temperature will a fusible plug melt on a 150lb chlorine cylinder?
12.
What type of relay is mostly used to detect a power loss and initiate a switchover to another power source?
13.
How often should chlorine supply lines be replaced?
14.
What type of water meter is based on the Doppler effect?
15.
What is the term for water samples collected at regular intervals and combined in equal volume with each other?
16.
Free chlorine residual values are based on contact time of at least?
17.
An autoclave will sterilize at
18.
What type of map provides a clear picture of the entire water distribution system?
19.
What device changes the alternating current to direct current by allowing the electric current to flow in one direction but blocks flow in the opposite direction?
20.
On a brand new pump, when should the first oil change be done?
21.
In order for a sample to be considered a, "First Draw Sample" for Lead & Copper testing, the water must?
22.
What is a riparian water right?
23.
What is the purpose of sodium thiosulfate in a water sample bottle?
24.
A grout seal should be?
25.
When responding to a chlorine gas leak, the responder should have a SCBA and a?
26.
With permit entry confined spaces, who is responsible for terminating entries?
27.
When a negative reading on the Langelier index is recorded the water is?
28.
Anaerobic bacteria live?
29.
A reaction of certain organic compounds and free chlorine can form?
30.
When sampling for THM's, what percentage of samples must be taken at the furthest point in the distribution system?
31.
The disinfection action of chlorine as the water temperature increases will what?
32.
If air is used to generate ozone, which percentage of the air is usually converted to ozone?
33.
How many minutes are in a day?
34.
What describes the discharge rate of a piston style pump?
35.
It is essential to ventilate a vault before entering in order to?
36.
If ammonia vapor is passed over a chlorine leak from a cylinder valve, the leak is indicate by
37.
Which is a type of joint for ductile iron pipe?
38.
Venturi meters are used for?
39.
Water distribution system piping should be rated to withstand how many times higher than normal operating pressure?
40.
How much time does a water utility have to notify of a Tier I violation?
41.
When taking a water distribution sample for bacteriological testing, the water operator taking the water sample should?
42.
Venturi meters work on a?
43.
The depression around the wall of the water surface caused by pumping water from the well is?
44.
How often should pump bearings be re-greased?
45.
When should packing replacement occur?
46.
Milky water that clears in time from the bottom up is a possible indication of?
47.
Which is a pathogen found in water?
48.
What gas can cause lung and skin irritation?
49.
What type of water main is now banned from being installed in the drinking water industry?
50.
The operating valve for a dry barrel fire hydrant is located?
