Water Distribution Practice Exam Grade 3 & 4 Tempe, Az With Complete Questions And Answers 100% Correct

The _______________ backflow assembly consists of two internally loaded independently acting check valves. During a backflow condition, both checks will shut and prevent backflow, there is not a relief valve on this device. {Ans: DC or Double Check}Before excavation, determine the location of all buried water, sewer, gas, power, telephone and cable TV lines and storm drains in the work area. Many phone books list an ________________ which will assist in the location of these utilities. {Ans: "Underground Service Alert" or "One-Call" centers}Which of the following best describes a double suction pump? {Ans: Water enters the impeller from two sides}Which of the following is NOT used as a water additive for corrosion control in storage tanks? {Ans: Aluminum Sulfate (Alum)}According to State Rule, "A.R.S." means? {Ans: Arizona Revised Statutes}Clear wells are used in the distribution system. What is the main purpose of clear wells in the system? {Ans: Supply stored water for high demand periods}This term is used for the process of advising motorists and pedestrians as to detailed requirements or conditions affecting road use at specific places and times in order that proper action may be taken and accidents or delays avoided.