Class C Water Operator License Exam Questions With
Complete Solutions
_____ all shoring from the top down and _____ from the bottom
up. Correct Answers install, remove
______ is the last barrier between the public and giardia or
cryptosporidium. Correct Answers filtration
______ is used to anchor pipe bends. Correct Answers concrete
_______ on a pipeline depend on the _____ or coefficient of
pipe roughness. Correct Answers friction loss, c factor
________ protection is the electrochemical method for
preventing ________ of metal tanks. Correct Answers cathodic,
corrosion
__________ occurs whenever there is a ______ in the velocity
or direction of water flow. Correct Answers water hammer,
sudden change
_____% of all the water on earth is saltwater. Correct Answers
97
_____% of the earth's surface is ocean. Correct Answers 75
100, 150, 200 and 250 are approved classes of _____ _____.
Correct Answers working pressure
, 5/8 meters need to be tested at least every _____ to _______ yrs.
Correct Answers 5, 10
90% of underground pipe failures are related to improper
Correct Answers backfill and bedding
A 5' deep pipe trench requires exit ladders every ____ feet and it
needs to have approved ____. Correct Answers 25. shoring
A bacti sample should be taken every ____ft of pipe. Correct
Answers 1000
A commonly used method to test for chlorine residual in water
is called the ____ method. Correct Answers dpd
A cross-connection is a connection between an _____ and an
_______ water supply. Correct Answers approved, unapproved
A distribution system is a Correct Answers looped system
A general deposit of mineral particles evenly along the inside of
the pipe is ________. Correct Answers tuberculation
A mass of concrete placed at bends and valve structures to
prevent pipeline movement is commonly called a _____. Correct
Answers thrust block
A piston meter is a _____ meter. Correct Answers displacement
Complete Solutions
_____ all shoring from the top down and _____ from the bottom
up. Correct Answers install, remove
______ is the last barrier between the public and giardia or
cryptosporidium. Correct Answers filtration
______ is used to anchor pipe bends. Correct Answers concrete
_______ on a pipeline depend on the _____ or coefficient of
pipe roughness. Correct Answers friction loss, c factor
________ protection is the electrochemical method for
preventing ________ of metal tanks. Correct Answers cathodic,
corrosion
__________ occurs whenever there is a ______ in the velocity
or direction of water flow. Correct Answers water hammer,
sudden change
_____% of all the water on earth is saltwater. Correct Answers
97
_____% of the earth's surface is ocean. Correct Answers 75
100, 150, 200 and 250 are approved classes of _____ _____.
Correct Answers working pressure
, 5/8 meters need to be tested at least every _____ to _______ yrs.
Correct Answers 5, 10
90% of underground pipe failures are related to improper
Correct Answers backfill and bedding
A 5' deep pipe trench requires exit ladders every ____ feet and it
needs to have approved ____. Correct Answers 25. shoring
A bacti sample should be taken every ____ft of pipe. Correct
Answers 1000
A commonly used method to test for chlorine residual in water
is called the ____ method. Correct Answers dpd
A cross-connection is a connection between an _____ and an
_______ water supply. Correct Answers approved, unapproved
A distribution system is a Correct Answers looped system
A general deposit of mineral particles evenly along the inside of
the pipe is ________. Correct Answers tuberculation
A mass of concrete placed at bends and valve structures to
prevent pipeline movement is commonly called a _____. Correct
Answers thrust block
A piston meter is a _____ meter. Correct Answers displacement
