Introduction to Water Distribution
Systems Exam Questions and Answers
Latest Update
private water supply systems, water is drawn from _____. - ANSWER-a well
To help prevent tooth decay, public water distribution systems add _____. -
ANSWER-fluoride
A homeowner is having a well installed in an area where the water table is 30 feet
below the surface. The
type of well installed will most likely be dug or _____. - ANSWER-driven
More gallons per minute can be pumped from a well that is _____. - ANSWER-
deeper
To dissolve carbon dioxide and to oxidize iron and manganese, water treatment
systems use _____. - ANSWER-aerators
After water is pumped from a river or lake to a water treatment plant, the first step of
treatment is _____. - ANSWER-aeration
To protect against corrosion and oxidation, galvanized pipe is electroplated with a
coating of _____. - ANSWER-zinc
Water meters are usually installed by _____. - ANSWER-a city or county employee
Any reversed flow of used or nonpotable water into the potable water distribution
system is called _____. - ANSWER-backflow
The flow of water in a water distribution system is regulated by a ______. -
ANSWER-valve
A water supply line that a plumber is installing requires the close control of flow at all
times. To ensure
maximum control, the plumber should install a _____. - ANSWER-globe valve
The type of valve used in piping systems with extremely low backpressure is a
_____. - ANSWER-ball-check value
The _____ should be installed so that it bypasses the water softener. - ANSWER-
hose bibb
Systems Exam Questions and Answers
Latest Update
private water supply systems, water is drawn from _____. - ANSWER-a well
To help prevent tooth decay, public water distribution systems add _____. -
ANSWER-fluoride
A homeowner is having a well installed in an area where the water table is 30 feet
below the surface. The
type of well installed will most likely be dug or _____. - ANSWER-driven
More gallons per minute can be pumped from a well that is _____. - ANSWER-
deeper
To dissolve carbon dioxide and to oxidize iron and manganese, water treatment
systems use _____. - ANSWER-aerators
After water is pumped from a river or lake to a water treatment plant, the first step of
treatment is _____. - ANSWER-aeration
To protect against corrosion and oxidation, galvanized pipe is electroplated with a
coating of _____. - ANSWER-zinc
Water meters are usually installed by _____. - ANSWER-a city or county employee
Any reversed flow of used or nonpotable water into the potable water distribution
system is called _____. - ANSWER-backflow
The flow of water in a water distribution system is regulated by a ______. -
ANSWER-valve
A water supply line that a plumber is installing requires the close control of flow at all
times. To ensure
maximum control, the plumber should install a _____. - ANSWER-globe valve
The type of valve used in piping systems with extremely low backpressure is a
_____. - ANSWER-ball-check value
The _____ should be installed so that it bypasses the water softener. - ANSWER-
hose bibb
