WATER DISTRIBUTION PRACTICE
TEST D1 /D2 QUESTIONS AND
CORRECT ANSWERS
The only absolutely reliable method of backflow prevention is the use of - ans-Air Gap
sw sw sw sw sw sw sw sw sw sw sw sw sw sw
The bubbles formed in a positive multiple tube fermentation test are - ans-
sw sw sw sw sw sw sw sw sw sw sw sw
Carbon Dioxide sw
The maximum rate of withdrawal of gas from a 150lb chlorine cylinder in 24-hours is -
sw sw sw sw sw sw sw sw sw sw sw sw sw sw sw
ans-40 lbs
sw sw
If you encounter a liquid chlorine leak in a one tone container, what action should you t
sw sw sw sw sw sw sw sw sw sw sw sw sw sw sw sw
ake first, to reduce the severity of the leak? - ans-
sw sw sw sw sw sw sw sw sw sw
Rotate the container to place the leak at the top
sw sw sw sw sw sw sw sw sw
The most commonly used water disinfectant in the United States is - ans-Chlorine
sw sw sw sw sw sw sw sw sw sw sw sw
When collecting a distribution system sample, the water should be allowed to run for a
sw sw sw sw sw sw sw sw sw sw sw sw sw sw sw
period of time prior to sample collection. How long - ans-
sw sw sw sw sw sw sw sw sw sw
As long as necessary to permit cleaning of service line
sw sw sw sw sw sw sw sw sw
Sample bottles wich are furnished by a certified laboratory for collection of bacteriologic
sw sw sw sw sw sw sw sw sw sw sw sw
al samples - ans-Are ready to use
sw sw sw sw sw sw
The difference between water pressure upstream and downstream of a pump when it is
sw sw sw sw sw sw sw sw sw sw sw sw sw
not in operations is know as the - ans-Total static head
sw sw sw sw sw sw sw sw sw sw sw
A device that automatically shuts off flow in an elevated storage tank when the water le
sw sw sw sw sw sw sw sw sw sw sw sw sw sw sw
vel in the tank reache a preset level is termed a - ans-Altitude valve
sw sw sw sw sw sw sw sw sw sw sw sw sw
In an occupied trench requiring personal egress what is the maximum allowable distan
sw sw sw sw sw sw sw sw sw sw sw sw
ce between a worker and an exit letter - ans-25 feet
sw sw sw sw sw sw sw sw sw sw
A water bearing formation in the soil is referred to as - ans-An aquifer
sw sw sw sw sw sw sw sw sw sw sw sw sw
The distance between the static water level and the pumping water level is termed the -
sw sw sw sw sw sw sw sw sw sw sw sw sw sw sw
ans-Drawdown
sw
TEST D1 /D2 QUESTIONS AND
CORRECT ANSWERS
The only absolutely reliable method of backflow prevention is the use of - ans-Air Gap
sw sw sw sw sw sw sw sw sw sw sw sw sw sw
The bubbles formed in a positive multiple tube fermentation test are - ans-
sw sw sw sw sw sw sw sw sw sw sw sw
Carbon Dioxide sw
The maximum rate of withdrawal of gas from a 150lb chlorine cylinder in 24-hours is -
sw sw sw sw sw sw sw sw sw sw sw sw sw sw sw
ans-40 lbs
sw sw
If you encounter a liquid chlorine leak in a one tone container, what action should you t
sw sw sw sw sw sw sw sw sw sw sw sw sw sw sw sw
ake first, to reduce the severity of the leak? - ans-
sw sw sw sw sw sw sw sw sw sw
Rotate the container to place the leak at the top
sw sw sw sw sw sw sw sw sw
The most commonly used water disinfectant in the United States is - ans-Chlorine
sw sw sw sw sw sw sw sw sw sw sw sw
When collecting a distribution system sample, the water should be allowed to run for a
sw sw sw sw sw sw sw sw sw sw sw sw sw sw sw
period of time prior to sample collection. How long - ans-
sw sw sw sw sw sw sw sw sw sw
As long as necessary to permit cleaning of service line
sw sw sw sw sw sw sw sw sw
Sample bottles wich are furnished by a certified laboratory for collection of bacteriologic
sw sw sw sw sw sw sw sw sw sw sw sw
al samples - ans-Are ready to use
sw sw sw sw sw sw
The difference between water pressure upstream and downstream of a pump when it is
sw sw sw sw sw sw sw sw sw sw sw sw sw
not in operations is know as the - ans-Total static head
sw sw sw sw sw sw sw sw sw sw sw
A device that automatically shuts off flow in an elevated storage tank when the water le
sw sw sw sw sw sw sw sw sw sw sw sw sw sw sw
vel in the tank reache a preset level is termed a - ans-Altitude valve
sw sw sw sw sw sw sw sw sw sw sw sw sw
In an occupied trench requiring personal egress what is the maximum allowable distan
sw sw sw sw sw sw sw sw sw sw sw sw
ce between a worker and an exit letter - ans-25 feet
sw sw sw sw sw sw sw sw sw sw
A water bearing formation in the soil is referred to as - ans-An aquifer
sw sw sw sw sw sw sw sw sw sw sw sw sw
The distance between the static water level and the pumping water level is termed the -
sw sw sw sw sw sw sw sw sw sw sw sw sw sw sw
ans-Drawdown
sw
