Water Distribution (D2 test) |
Questions and Answers Verified 100%
Correct
The correct protective methods for back-flow-prevention devices in order of
most effective to least effective ?
Air gap, RPZ, DCVS, and VB
Data manipulations using the basic elements of automated mapping, facility
management, and geographic information systems are often used for
distribution system _______ and _______.
Modeling & Analysis
What type of temperature sensor uses a semi-conductive material
Thermistors
From the list below , choose the type of pipe that would most likely collapse
or become distorted under a partial vacuum A)Asbestos-Cement
B)Cast Iron
C)Steel
D)Plastic
Steel
From the valves listed below , choose which type of valve operates similar to
a diaphragm valve.
Globe Valve
A water sample collected for a chlorine analysis must be analyzed within _____
,minutes of collection
, 15
What type of water storage Facility is most likely to contain non-potable water ?
Emergency Storage Tanks
The Lantern Ring Is also called the :
Seal cage
A______ changes alternating current to direct current by allowing the electric current
to flow in one direction but blocking flow in the opposite direction
Rectifier
What thrust control device is easy to use , especially in locations where there's a lot
of existing utilities or structures
Restraining fittings
What is the most common type of centrifugal pump in use ?
Radial flow impellers
What type of pipe joint consists of two machined surfaces?
Flanged joint
What is the purpose of an altitude valve used on the water storage tanks ?
To stop the flow of water into the tank when it is full
How is pipe strength expressed ?
Tensile and flexural strength
What is the best mechanical compacting equipment for deep narrow trenches
so workers don't have to enter the trench ?
Questions and Answers Verified 100%
Correct
The correct protective methods for back-flow-prevention devices in order of
most effective to least effective ?
Air gap, RPZ, DCVS, and VB
Data manipulations using the basic elements of automated mapping, facility
management, and geographic information systems are often used for
distribution system _______ and _______.
Modeling & Analysis
What type of temperature sensor uses a semi-conductive material
Thermistors
From the list below , choose the type of pipe that would most likely collapse
or become distorted under a partial vacuum A)Asbestos-Cement
B)Cast Iron
C)Steel
D)Plastic
Steel
From the valves listed below , choose which type of valve operates similar to
a diaphragm valve.
Globe Valve
A water sample collected for a chlorine analysis must be analyzed within _____
,minutes of collection
, 15
What type of water storage Facility is most likely to contain non-potable water ?
Emergency Storage Tanks
The Lantern Ring Is also called the :
Seal cage
A______ changes alternating current to direct current by allowing the electric current
to flow in one direction but blocking flow in the opposite direction
Rectifier
What thrust control device is easy to use , especially in locations where there's a lot
of existing utilities or structures
Restraining fittings
What is the most common type of centrifugal pump in use ?
Radial flow impellers
What type of pipe joint consists of two machined surfaces?
Flanged joint
What is the purpose of an altitude valve used on the water storage tanks ?
To stop the flow of water into the tank when it is full
How is pipe strength expressed ?
Tensile and flexural strength
What is the best mechanical compacting equipment for deep narrow trenches
so workers don't have to enter the trench ?
