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20 Cards in this Set
- Front
- Back
A plat is? |
A map |
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Water behind a dam and above a water treatment plant has energy by virtue of its elevation this difference in elevation is called elevation head or? |
Potential energy |
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Which one of the following is a type of joint for ductile iron piping? |
Push on joint |
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Which type of distribution system configuration has interconnected mains? |
Grid system |
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The arrangement of pumps in parallel is typically used? |
To increase flow |
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Which of the following is a disadvantage for using steel pipe? |
It has the potential for both internal and external corrosion |
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Which type of distribution system configuration surrounds the distribution area with large diameter mains? |
Arterial Loop system |
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The C valve is a measure of the pipe's wall? |
Roughness that retards flow due to friction |
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Although velocity head can usually be ignored it should be considered when it is____to____percent of the pressure head? |
1:2 |
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The highest degree of protection for the exterior of a coated steel pipe is? |
Cathodic protection |
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The amount of energy in feet that a pump supplies to a fluid is called? |
Pump head |
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Which type of valve will prevent the collapse of a pipe? |
Air and vacuum relief valve |
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As the total head on a system increases, the volume that a centrifical pump delivers is reduced? |
Proportionately |
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Which type of joint should be used for a ductile iron piping in unstable soils? |
Restrained joint |
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Head is measured in? |
Feet |
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In which time of the day is the age of the water stored in the distribution system the highest? |
Early morning |
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In general areas that require high fire flow capacity require the minimum static pressure to be? |
35 psi or greater |
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Friction head loss can be calculated using tablets based on? |
The Hazen Williams formula |
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The amount of liquid that can be raised vertically by a given pressure is called? |
Pressure head |
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The correct protective methods for backflow prevention devices in order of decreasing effectiveness? |
Air gap, RPZ, DCVA and VB |