Download Water Distribution 2 California Practice test Exam and more Exams Water Resources Planning and Management in PDF only on Docsity! Water Distribution 2 California Practice test Exam The Difference between the static ground water level and the pumping level is the - CORRECT ANSWER-drawdown A customer complaint about the presence of brown floc in tap water can best be handled by - CORRECT ANSWER-investigating the problem as soon as possible The term "aquifer" relates to which one of the following ? - CORRECT ANSWER- groundwater One indication of corrosive water is a high concentration of - CORRECT ANSWER- Carbon dioxide Catholic protection means protection against - CORRECT ANSWER-Corrosion The primary reason for the use of a dry barrel fire hydrant is to - CORRECT ANSWER- keep the hydrant from freezing The component parts of a well include all of the following except - CORRECT ANSWER-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 - CORRECT ANSWER- more than Which of the following is the principal constituent in water that causes corrosion of metals? - CORRECT ANSWER-dissolved oxygen Which component of a centritugal pump moves the water? - CORRECT ANSWER- impeller A record containing the size, location, and ties of water mains; valves; hydrants; tanks; reservoirs; and pump stations is called a - CORRECT ANSWER-comprehensive map What term describes water that is suitable for drinking - CORRECT ANSWER-potable a pump delivering 288,000 gallons of water in 24 hours operates at what average flow rate? - CORRECT ANSWER-200 gallons per minute Velocity of flow in mains is usually expressed in terms of - CORRECT ANSWER-Feet per second A competent person at an excavation work site - CORRECT ANSWER-Is capable of identifying hazarda and has the authority to take corrrective measures. Hydrogen sulfide gas smells like - CORRECT ANSWER-rotten eggs which of the following methods can be used to renove high iron content from a well supply? - CORRECT ANSWER-oxidation and filtration. Hardness may be expressed in - CORRECT ANSWER-Milligrams per litre as CaCO3 The basic unit of electrical power is the - CORRECT ANSWER-Watt A standpipe is 84 inches in diameter and 20 feet high. How many gallons are in the standpipe when the water is 16 feet deep? - CORRECT ANSWER-4,603 Check valves are used to - CORRECT ANSWER-permit flow in only one driection Standard pumper connection fire hydranta should not be installed on water mains smaller then ----inches in diameter. - CORRECT ANSWER-6 Beards or long sideburns prohibit an operator from safely - CORRECT ANSWER- wearing the face mask of a self contained breathing apparatus. The water table is defined as the - CORRECT ANSWER-upper surface of the groundwater. The shaft speed of an electric motor is most commonly expressed in units of - CORRECT ANSWER-revolutions per minute A coupon test installation in a distribution system is used to - CORRECT ANSWER- determine the rate scaling or corrosion. Disease causing bacteria are know as - CORRECT ANSWER-pathogenic Normally, surface water and groundwater have a PH range of - CORRECT ANSWER- 6.8 to 8.5 Which is the best definition of turbidity in water? - CORRECT ANSWER-anything in water that scatters light A competent person must inspect excavations and adjacent areas for hazards - CORRECT ANSWER-daily, prior to the start of work, and as needed throughout the shift.
