Water distribution d1 and d2 good
Exam Questions and Answers 100%
Accurate
Wet tap - ANSWER-A connection made into a main that is full or under pressure is a
Cross connection - ANSWER-A connection between a safe and an unsafe water
supply is called a
Is available for use without causing shortages during dry periods - ANSWER-Safe
yield of a water source is the quantity of water which:
Rate of flow of water - ANSWER-A Venturi tube increases the velocity and
decreases the pressure as water flows through it. This type of tube is used to
measure the:
Underground strata of water - ANSWER-Aquifer is a type of
10 percent - ANSWER-In a well managed metered distribution system, unaccounted-
for-water should not exceed
35 psi - ANSWER-According to AWWA guidelines, during a fire,water pressure
should not drop below 20 psi. What is the AWWA recommended minimum water
pressure in a distribution system, under normal flow conditions, excluding fire flow?
Closed slowly to reduce surges - ANSWER-After using a hydrant, the hydrant should
be:
15-20 ft - ANSWER-For a centrifugal pump in good condition, the practical suction lift
is.
Acidic - ANSWER-PH reading of 5.0 indicates the water sample is
Ten drops per minute - ANSWER-When using a centrifugal pump, the packing
glands around the shaft should be checked daily, water leakage from the packing
gland should be approximately
Horizontal 10 ft, vertical 1 ft - ANSWER-Water and sewer line are installed parallel to
each other underground in trenches. The following minimum, wall to wall, separation
must be provided:
Stains plumbing fixtures and laundry - ANSWER-The source of water containing iron
and manganese is usually groundwater. This water:
, Under registers the amount of water delivered - ANSWER-As a water meter
becomes worn with use it tends to:
Rotten eggs - ANSWER-Hydrogen sulfide gives off ___________ odor
Calcium and magnesium - ANSWER-Hardness is caused by
Causes teeth to become mottled - ANSWER-Water containing excess fluoride
Meters - ANSWER-Devices used to measure water flow are called
Purple - ANSWER-The color of pipe carrying recycled water to irrigate a golf course
Contamination of the system by back siphonage - ANSWER-Fire fighting may cause
the low pressure in an area of a distribution system. The low pressure might lead to:
Iron - ANSWER-Red water problems are due primarily to:
0-14 - ANSWER-PH range is:
Flush the eyes with a lot of water for approximately 15 minutes - ANSWER-If your
eyes are exposed to chlorine, you should:
Take three repeat samples - one from the same location, one upstream and one
downstream - within 24 hours - ANSWER-The first time a bacteriological sample
report comes back marked unsafe, you should
1.0 - ANSWER-One PPM is equal to ___ mg/l
All of the above: Chemical processing plant, hospitals, wastewater treatment plant -
ANSWER-A backflow prevention device is required on the water service line which
serves
5 feet - ANSWER-Per OSHA regulations trench must be shored if it is ______ deep,
or deeper
All of the above:
incorrect installation, misjudgment of soil conditions, Heavy loads or failure to
consider change in weather - ANSWER-The shoring systems sometimes fail due to
Nutating disc meter - ANSWER-Which of the following meter is commonly installed
in a single family, residential, homes
No more than 12-inches above the floor - ANSWER-The outlet of a forced ventilation
system for a chlorinator room should be located:
Pressure-reducing - ANSWER-Which of the following valves should be used when it
becomes necessary to supply water at different pressure zones
Exam Questions and Answers 100%
Accurate
Wet tap - ANSWER-A connection made into a main that is full or under pressure is a
Cross connection - ANSWER-A connection between a safe and an unsafe water
supply is called a
Is available for use without causing shortages during dry periods - ANSWER-Safe
yield of a water source is the quantity of water which:
Rate of flow of water - ANSWER-A Venturi tube increases the velocity and
decreases the pressure as water flows through it. This type of tube is used to
measure the:
Underground strata of water - ANSWER-Aquifer is a type of
10 percent - ANSWER-In a well managed metered distribution system, unaccounted-
for-water should not exceed
35 psi - ANSWER-According to AWWA guidelines, during a fire,water pressure
should not drop below 20 psi. What is the AWWA recommended minimum water
pressure in a distribution system, under normal flow conditions, excluding fire flow?
Closed slowly to reduce surges - ANSWER-After using a hydrant, the hydrant should
be:
15-20 ft - ANSWER-For a centrifugal pump in good condition, the practical suction lift
is.
Acidic - ANSWER-PH reading of 5.0 indicates the water sample is
Ten drops per minute - ANSWER-When using a centrifugal pump, the packing
glands around the shaft should be checked daily, water leakage from the packing
gland should be approximately
Horizontal 10 ft, vertical 1 ft - ANSWER-Water and sewer line are installed parallel to
each other underground in trenches. The following minimum, wall to wall, separation
must be provided:
Stains plumbing fixtures and laundry - ANSWER-The source of water containing iron
and manganese is usually groundwater. This water:
, Under registers the amount of water delivered - ANSWER-As a water meter
becomes worn with use it tends to:
Rotten eggs - ANSWER-Hydrogen sulfide gives off ___________ odor
Calcium and magnesium - ANSWER-Hardness is caused by
Causes teeth to become mottled - ANSWER-Water containing excess fluoride
Meters - ANSWER-Devices used to measure water flow are called
Purple - ANSWER-The color of pipe carrying recycled water to irrigate a golf course
Contamination of the system by back siphonage - ANSWER-Fire fighting may cause
the low pressure in an area of a distribution system. The low pressure might lead to:
Iron - ANSWER-Red water problems are due primarily to:
0-14 - ANSWER-PH range is:
Flush the eyes with a lot of water for approximately 15 minutes - ANSWER-If your
eyes are exposed to chlorine, you should:
Take three repeat samples - one from the same location, one upstream and one
downstream - within 24 hours - ANSWER-The first time a bacteriological sample
report comes back marked unsafe, you should
1.0 - ANSWER-One PPM is equal to ___ mg/l
All of the above: Chemical processing plant, hospitals, wastewater treatment plant -
ANSWER-A backflow prevention device is required on the water service line which
serves
5 feet - ANSWER-Per OSHA regulations trench must be shored if it is ______ deep,
or deeper
All of the above:
incorrect installation, misjudgment of soil conditions, Heavy loads or failure to
consider change in weather - ANSWER-The shoring systems sometimes fail due to
Nutating disc meter - ANSWER-Which of the following meter is commonly installed
in a single family, residential, homes
No more than 12-inches above the floor - ANSWER-The outlet of a forced ventilation
system for a chlorinator room should be located:
Pressure-reducing - ANSWER-Which of the following valves should be used when it
becomes necessary to supply water at different pressure zones
