Welcome to the 25 Question Water Distribution Practice Test.
Choose the best possible answer to the question.
1.
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?
2.
When gas chlorinators operate at a high rate of withdrawal, what may happen?
3.
What is the odor detection limit for chlorine gas?
4.
If special bedding is required due to poor local soil conditions, the material should not contain granular material greater than?
5.
How much chlorine should be used when swabbing new water lines?
6.
Which is a type of joint for ductile iron pipe?
7.
If an operator has a problem achieving adequate disinfection, a possible cause is?
8.
It is essential to ventilate a vault before entering in order to?
9.
Records on bacterial analysis should be kept for a minimum of?
10.
If using free chlorine, the dosage and exposure time to disinfect a water well is?
11.
What should be installed between a water main and a fire hydrant?
12.
The outlet of a forced ventilation system for a chlorinator room she be located?
13.
Compressive fittings used with copper or plastic tubing seal by using?
14.
Acid should always be diluted into water.
15.
What does DBP stand for?
16.
When a water main needs to be depressurized is must be what?
17.
What type of personal protective equipment should an operator wear when handling hypochlorite?
18.
Spontaneous combustion can occur when chlorine is mixed with?
19.
Although velocity head can usually be ignored, it be considered when it is what percent of pressure head?
20.
Records of chemical analyses should be kept for?
21.
The amount of energy in feet required to overcome resistance to flow in a pipe is called?
22.
A yellow fire hydrant body with a blue cap flows at?
23.
What is a closed fireline?
24.
What agency establishes drinking water standards in the United States of America?
25.
All consumer water meters must test within what range of accuracy?
