WATER DISTRIBUTION OPERATOR (PRACTICE TEST D1) EXAM
TEST WITH LATEST UPDATED (QUESTIONS AND ANSWERS)
ALREADY PASSED!!
What is the maximum rate of chorine gas removal form a 150-lbs pound cylinder ?
40LBS per day
What is a type of positive displacement water meter ?
Nutating - Disk Meter
In general, at what depths is shoring required for a trench, if your excavating soil ?
5 Feet or deeper
What is used to automatically shut off the flow into a tank when water level reaches a
pre-determined level?
Altitude Valve
What is recommended if a chlorine gas cylinder is leaking?
Rotate the cylinder and turn the leak upward
What impact would organics have on chlorine demand?
Increase chlorine demand
What is the purple pipe used for?
Reclaimed water
Where is the correct location to install air release valve ?
Top of pipe
which valve is available as a swing, double door, or slanting disc?
Check Valve
What are used to protect water mains and ranks from corrosion?
Anodes
What is total dynamic head?
Total static head plus head loss, when the pump is operating
What is a connection between potable water system and an unapproved water supply?
, Cross Connection
What causes a pump to sound like it is pumping rocks?
Cavitation
What will reduce flow rate in a pipe?
Encrustation
What is the source of E.Coli?
Intestinal tract of warm blooded animals (poop)
What is the primary purpose of a listening device?
Locate leaks
What is commonly used to protect the exterior of ductile iron pipe from corrosion?
Polyethylene
What cases water to appear red ?
Iron
The PH scale goes from ?
0-14
Water Velocity in mains is usually expressed as ?
Feet Per Second
Water Table is defined as ?
Groundwater upper surface
"MCL" means :
Maximum contaminant level
High Nitrate concentration affects
Infants / Baby Blue Syndrome
Water with a high turbidity will also have high concentration of
Fine suspended materials
An operator should never enter a room containing a high chlorine gas concentration
without
ALL ARE CORRECT: -Notifying the proper authorities - A self containing air supply -
Notifying supervisor
The Difference between the static ground water level and the pumping level is ?
Drawdown
TEST WITH LATEST UPDATED (QUESTIONS AND ANSWERS)
ALREADY PASSED!!
What is the maximum rate of chorine gas removal form a 150-lbs pound cylinder ?
40LBS per day
What is a type of positive displacement water meter ?
Nutating - Disk Meter
In general, at what depths is shoring required for a trench, if your excavating soil ?
5 Feet or deeper
What is used to automatically shut off the flow into a tank when water level reaches a
pre-determined level?
Altitude Valve
What is recommended if a chlorine gas cylinder is leaking?
Rotate the cylinder and turn the leak upward
What impact would organics have on chlorine demand?
Increase chlorine demand
What is the purple pipe used for?
Reclaimed water
Where is the correct location to install air release valve ?
Top of pipe
which valve is available as a swing, double door, or slanting disc?
Check Valve
What are used to protect water mains and ranks from corrosion?
Anodes
What is total dynamic head?
Total static head plus head loss, when the pump is operating
What is a connection between potable water system and an unapproved water supply?
, Cross Connection
What causes a pump to sound like it is pumping rocks?
Cavitation
What will reduce flow rate in a pipe?
Encrustation
What is the source of E.Coli?
Intestinal tract of warm blooded animals (poop)
What is the primary purpose of a listening device?
Locate leaks
What is commonly used to protect the exterior of ductile iron pipe from corrosion?
Polyethylene
What cases water to appear red ?
Iron
The PH scale goes from ?
0-14
Water Velocity in mains is usually expressed as ?
Feet Per Second
Water Table is defined as ?
Groundwater upper surface
"MCL" means :
Maximum contaminant level
High Nitrate concentration affects
Infants / Baby Blue Syndrome
Water with a high turbidity will also have high concentration of
Fine suspended materials
An operator should never enter a room containing a high chlorine gas concentration
without
ALL ARE CORRECT: -Notifying the proper authorities - A self containing air supply -
Notifying supervisor
The Difference between the static ground water level and the pumping level is ?
Drawdown
