Water Distribution D2 California Practice test

Water Distribution D2 California Practice test The Difference between the static ground water level and the pumping level is the - drawdown A customer complaint about the presence of brown floc in tap water can best be handled by - investigating the problem as soon as possible The term "aquifer" relates to which one of the following ? - groundwater One indication of corrosive water is a high concentration of - Carbon dioxide Catholic protection means protection against - Corrosion The primary reason for the use of a dry barrel fire hydrant is to - keep the hydrant from freezing The component parts of a well include all of the following except - pressure switch At the same barometric pressure, the amount of dissolved oxygen in cold water tends to be ............ the amount of dissolved oxygen in the warm water - more than Which of the following is the principal constituent in water that causes corrosion of metals? - dissolved oxygen Which component of a centritugal pump moves the water? - impeller A record containing the size, location, and ties of water mains; valves; hydrants; tanks; reservoirs; and pump stations is called a - comprehensive map What term describes water that is suitable for drinking - potable a pump delivering 288,000 gallons of water in 24 hours operates at what average flow rate? - 200 gallons per minute Velocity of flow in mains is usually expressed in terms of - Feet per second A competent person at an excavation work site - Is capable of identifying hazarda and has the authority to take corrrective measures. Hydrogen sulfide gas smells like - rotten eggs which of the following methods can be used to renove high iron content from a well supply? - oxidation and filtration.