1|Page
WATER DISTRIBUTION GRADE 1 EXAM LATEST
WITH ACTUAL QUESTIONS AND CORRECT
VERIFIED ANSWERS ALREADY GRADED A+
100% GUARANTEED PASS
It is best to use __________ to determine the hydraulic
grade line. - ....ANSWER ....✔✔ Pressure gauges
What are the 3 most common types of centrifugal pump
impellers? - ....ANSWER ....✔✔ Closed, semi-open,
open
What is the purpose of a check valve? - ....ANSWER
....✔✔ To control the direction of flow
Where would be the best place for hydrants to be
located?
A - Close to buildings
B - Near the street
C - Near street intersections
,2|Page
D - Behind protective barriers - ....ANSWER ....✔✔ C
- Near street intersections
What type of mechanical pipe cleaning unit has high-
carbon spring-steel blades? - ....ANSWER ....✔✔
Metal scrappers
What could the loss of pressure in a water system
possibly cause, besides compromising fire fighting
capabilities? - ....ANSWER ....✔✔ Contamination due
to backflow/backsiphonage
______________ valves are most often used where
pressure is relatively high and positive shutoff is
required, such as the discharge of a high-lift pump. -
....ANSWER ....✔✔ Large plug
It is best to have an _________________ to prevent the
collapse of a pipe when it is being emptied. -
....ANSWER ....✔✔ Air-and-vacuum relief valve
What is a cross-connection? - ....ANSWER ....✔✔
Temporary or permanent physical connection between
potable water and unapproved sources
,3|Page
What does high water pressure cause?
A - More main and service leaks
B - More hot water tank failures
C - More appliance failures
D - All of the above - ....ANSWER ....✔✔ D - All of
the above
An advantage of _________________ is that there is
no flow of water from a broken hyrdant. - ....ANSWER
....✔✔ Dry barrel hydrants
What type of pipe has high tensile strength, is low cost,
and is good hydraulically when lined but is subject to
general corrosion if installed unprotected in a corrosive
environment? - ....ANSWER ....✔✔ Steel pipe
What type of meter should have a strainer installed
ahead of the flow into it to protect it from sediment and
other objects in the water? - ....ANSWER ....✔✔
Compound meter
What should be inspected on a altitude valve that fills
an elevated tank?
, 4|Page
A - Opening and closing speed to prevent water
hammer
B - Make sure no oil leaks that could contaminate the
water
C - Make sure valve is letting enough water in to fill the
tank
D - Both A and C - ....ANSWER ....✔✔ D - Both A and
C
What type of large water storage is usually equipped
with an adjacent pumping system that can be used in an
emergency to pump water to the distribution system? -
....ANSWER ....✔✔ Standpipes
What type of valve is used in the distribution system
where the main is not buried very deep? - ....ANSWER
....✔✔ Horizontal gate valve
Water utilities that purchase their water during off-peak
hours will usually pay much less. The rate charge for this
water is often called ______________. - ....ANSWER
....✔✔ Off-peak charge
WATER DISTRIBUTION GRADE 1 EXAM LATEST
WITH ACTUAL QUESTIONS AND CORRECT
VERIFIED ANSWERS ALREADY GRADED A+
100% GUARANTEED PASS
It is best to use __________ to determine the hydraulic
grade line. - ....ANSWER ....✔✔ Pressure gauges
What are the 3 most common types of centrifugal pump
impellers? - ....ANSWER ....✔✔ Closed, semi-open,
open
What is the purpose of a check valve? - ....ANSWER
....✔✔ To control the direction of flow
Where would be the best place for hydrants to be
located?
A - Close to buildings
B - Near the street
C - Near street intersections
,2|Page
D - Behind protective barriers - ....ANSWER ....✔✔ C
- Near street intersections
What type of mechanical pipe cleaning unit has high-
carbon spring-steel blades? - ....ANSWER ....✔✔
Metal scrappers
What could the loss of pressure in a water system
possibly cause, besides compromising fire fighting
capabilities? - ....ANSWER ....✔✔ Contamination due
to backflow/backsiphonage
______________ valves are most often used where
pressure is relatively high and positive shutoff is
required, such as the discharge of a high-lift pump. -
....ANSWER ....✔✔ Large plug
It is best to have an _________________ to prevent the
collapse of a pipe when it is being emptied. -
....ANSWER ....✔✔ Air-and-vacuum relief valve
What is a cross-connection? - ....ANSWER ....✔✔
Temporary or permanent physical connection between
potable water and unapproved sources
,3|Page
What does high water pressure cause?
A - More main and service leaks
B - More hot water tank failures
C - More appliance failures
D - All of the above - ....ANSWER ....✔✔ D - All of
the above
An advantage of _________________ is that there is
no flow of water from a broken hyrdant. - ....ANSWER
....✔✔ Dry barrel hydrants
What type of pipe has high tensile strength, is low cost,
and is good hydraulically when lined but is subject to
general corrosion if installed unprotected in a corrosive
environment? - ....ANSWER ....✔✔ Steel pipe
What type of meter should have a strainer installed
ahead of the flow into it to protect it from sediment and
other objects in the water? - ....ANSWER ....✔✔
Compound meter
What should be inspected on a altitude valve that fills
an elevated tank?
, 4|Page
A - Opening and closing speed to prevent water
hammer
B - Make sure no oil leaks that could contaminate the
water
C - Make sure valve is letting enough water in to fill the
tank
D - Both A and C - ....ANSWER ....✔✔ D - Both A and
C
What type of large water storage is usually equipped
with an adjacent pumping system that can be used in an
emergency to pump water to the distribution system? -
....ANSWER ....✔✔ Standpipes
What type of valve is used in the distribution system
where the main is not buried very deep? - ....ANSWER
....✔✔ Horizontal gate valve
Water utilities that purchase their water during off-peak
hours will usually pay much less. The rate charge for this
water is often called ______________. - ....ANSWER
....✔✔ Off-peak charge
