Welcome to the 25 Question Water Distribution Practice Test.
Choose the best possible answer to the question.
1.
What is used on the outside joint space of a steel cylinder concrete in order to protect the joint rings from external corrosion?
2.
How many Milliliters (ml) are in 1 gallon of water?
3.
What is the pneumatic standard range?
4.
The Safe Drinking Water Act sets?
5.
Where ground frost is expected, how far away from any wall should the riser pipes be installed in a meter pit?
6.
What is the rule that sets MCL's for harmful chemicals?
7.
What color will the DPD indicator powder turn water?
8.
What device found in labs sterilizes by using pressurized steam?
9.
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?
10.
The proper emergency kit for a TON chlorine cylinder is?
11.
What is the sample size for lead and copper analysis?
12.
What should be installed between a water main and a fire hydrant?
13.
What is this and what is it used for?
14.
How many feet must a ladder extend above the trench?
16.
What is the detention time for disinfecting a water storage tank with water mixed with hypochlorites and has a free chlorine of 10 mg/L?
17.
What is the term for water samples collected at regular intervals and combined in equal volume with each other?
18.
What health effect category refers to an organic chemical that is a known carcinogen?
19.
When the discharge of a velocity pump is blocked, head builds up. Typically the head is greater than the pressure generated during pumping. When this occurs, water recirculates inside the pump impeller and casing. This condition is called?
20.
What type of water meter is based on the Doppler effect?
21.
What is the MCL for THM's?
22.
Never apply water to a gaseous chlorine leak because the water will cause more issues.
23.
What type of relay is mostly used to detect a power loss and initiate a switchover to another power source?
24.
When a control switch that is operated by changes in pressure is located too close to a pump station what problem may occur?
25.
According to OSHA, an atmosphere is oxygen deficient if it contains less than what percent of oxygen by volume?
