WATER DISTRIBUTION 2 EXAM 2025/2026
QUESTIONS AND ANSWERS GRADED A+
(BRAND NEW)
With ground-level reservoirs, why are properly functioning air vents essential?
1. To allow surface runoff to flow into the reservoir when it is available
2. To avoid weakening the structural stability of the reservoir
3. To meet maximum daily flow demands
4. To prevent a pressure developing in the reservoir when it fills or a vacuum when
it empties or is drained
4
A hydropneumatic or pressure tank contains what type of system?
1. A system in which a water pump is controlled by the air pressure in a tank
partially filled with water
2. A system in which water is compressed in the tank
3. A system that provides sufficient storage to meet demands during power outages
4. A system that provides unlimited time to do maintenance or repair work on
wells, pumps, or water treatment equipment
1
,Why must care be used when operating and maintaining hydropneumatic tank
facilities, especially the pressure relief valves?
1. Because a vacuum can easily develop in the system
2. Because O&M is a complex process
because of the high pressure in the tank
4. Because of the potential to fall into the water and drowned
3
The capacity of a clear well should be sufficient to allow a water filtration plant to
operate a what rate?
1. At a constant rate during periods of fire demands
2. At a constant rate during periods of peak demands
3. At a constant rate during periods of power outages
4. At a maximum hourly rate for a 24-hour period
2
How can automatic water level regulation be achieved in storage tanks and
reservoirs? By using
1. Altitude-control valves
2. Automatic gate valves
3. Operators calculating anticipated demands
4. Variable speed pumps
,1
Chemical water quality problems may be caused by which item?
1. Chemical precipitates
2. Leaching of chemicals from tank linings or coatings
3. Rust
4. Settling and collection of sediment
2
What is breakpoint coronation? The addition of chlorine to water or wastewater
until the chlorine
1. Analyzer's indicator point is at maximum point
2. Demand has been satisfied
3. Gas breaks out of the water surface
4. Solution saturation point has been exceeded
2
When is the best time of year to take a water storage facility out of service for
complete cleaning and inspection? During the period
1. Of lowest water consumption
, 2. Of the most favorable weather conditions
3. When agency maintenance crews are available
4. When the contractors' crews are available
1
T/F:
Standpipes have a height greater than their diameter
True
T/F:
The main purpose of a surge tank is to store a limited amount of water for use in
short-term emergencies
False
Surge tanks main purpose is to control water hammer or regulate the flow of water
T/F:
Water hammer is an annoying but harmless noise that is caused by sudden changes
in water pressure
False
Water hammer is caused by a sudden change in water pressure but it is serious and
can cause major damage.
QUESTIONS AND ANSWERS GRADED A+
(BRAND NEW)
With ground-level reservoirs, why are properly functioning air vents essential?
1. To allow surface runoff to flow into the reservoir when it is available
2. To avoid weakening the structural stability of the reservoir
3. To meet maximum daily flow demands
4. To prevent a pressure developing in the reservoir when it fills or a vacuum when
it empties or is drained
4
A hydropneumatic or pressure tank contains what type of system?
1. A system in which a water pump is controlled by the air pressure in a tank
partially filled with water
2. A system in which water is compressed in the tank
3. A system that provides sufficient storage to meet demands during power outages
4. A system that provides unlimited time to do maintenance or repair work on
wells, pumps, or water treatment equipment
1
,Why must care be used when operating and maintaining hydropneumatic tank
facilities, especially the pressure relief valves?
1. Because a vacuum can easily develop in the system
2. Because O&M is a complex process
because of the high pressure in the tank
4. Because of the potential to fall into the water and drowned
3
The capacity of a clear well should be sufficient to allow a water filtration plant to
operate a what rate?
1. At a constant rate during periods of fire demands
2. At a constant rate during periods of peak demands
3. At a constant rate during periods of power outages
4. At a maximum hourly rate for a 24-hour period
2
How can automatic water level regulation be achieved in storage tanks and
reservoirs? By using
1. Altitude-control valves
2. Automatic gate valves
3. Operators calculating anticipated demands
4. Variable speed pumps
,1
Chemical water quality problems may be caused by which item?
1. Chemical precipitates
2. Leaching of chemicals from tank linings or coatings
3. Rust
4. Settling and collection of sediment
2
What is breakpoint coronation? The addition of chlorine to water or wastewater
until the chlorine
1. Analyzer's indicator point is at maximum point
2. Demand has been satisfied
3. Gas breaks out of the water surface
4. Solution saturation point has been exceeded
2
When is the best time of year to take a water storage facility out of service for
complete cleaning and inspection? During the period
1. Of lowest water consumption
, 2. Of the most favorable weather conditions
3. When agency maintenance crews are available
4. When the contractors' crews are available
1
T/F:
Standpipes have a height greater than their diameter
True
T/F:
The main purpose of a surge tank is to store a limited amount of water for use in
short-term emergencies
False
Surge tanks main purpose is to control water hammer or regulate the flow of water
T/F:
Water hammer is an annoying but harmless noise that is caused by sudden changes
in water pressure
False
Water hammer is caused by a sudden change in water pressure but it is serious and
can cause major damage.
