Water Distribution Test Questions
and Answers All Correct
The most common type of pump used in a water distribution system is the ________. -
Answer-centrifugal pump
What is required to overcome the resistance to flow in the pipe and fittings? - Answer-
horsepower
The meter most commonly used for residential customers is the ________. - Answer-
positive displacement meter
The meter which is accurate over a wide range of flows is the ________. - Answer-
compound meter
The spoil bank should be located ________. - Answer-at least 2 feet from the edge of
the trench
Ninety percent of underground pipe failures are related to ________. - Answer-improper
backfill and lack of proper bedding
Unexplained water losses in a good system will not exceed ________. - Answer-10%
The process of placing a smaller diameter pipe inside a larger pipe instead of repairing
the pipe is known as ________. - Answer-slip lining
How many cubic yards of dirt will be hauled away from an excavation site after job
completion with a trench that is 250 feet long, 42 inches wide and 5 feet deep, and a 24
inch pipe has been installed in the trench? - Answer-29 cu. yd.
(3.14 x 1 x 1 x 250) / 27 = 29.07
Neglecting friction, how many 6 inch water lines would be required to carry the same
amount of water as one 12 inch water line? - Answer-four
(12/6) x (12/6) = 4
Considering friction, how many 6 inch water lines would be required to carry the same
amount of water as one 12 inch water line? - Answer-six
and Answers All Correct
The most common type of pump used in a water distribution system is the ________. -
Answer-centrifugal pump
What is required to overcome the resistance to flow in the pipe and fittings? - Answer-
horsepower
The meter most commonly used for residential customers is the ________. - Answer-
positive displacement meter
The meter which is accurate over a wide range of flows is the ________. - Answer-
compound meter
The spoil bank should be located ________. - Answer-at least 2 feet from the edge of
the trench
Ninety percent of underground pipe failures are related to ________. - Answer-improper
backfill and lack of proper bedding
Unexplained water losses in a good system will not exceed ________. - Answer-10%
The process of placing a smaller diameter pipe inside a larger pipe instead of repairing
the pipe is known as ________. - Answer-slip lining
How many cubic yards of dirt will be hauled away from an excavation site after job
completion with a trench that is 250 feet long, 42 inches wide and 5 feet deep, and a 24
inch pipe has been installed in the trench? - Answer-29 cu. yd.
(3.14 x 1 x 1 x 250) / 27 = 29.07
Neglecting friction, how many 6 inch water lines would be required to carry the same
amount of water as one 12 inch water line? - Answer-four
(12/6) x (12/6) = 4
Considering friction, how many 6 inch water lines would be required to carry the same
amount of water as one 12 inch water line? - Answer-six
