Water Distro

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Water Distro
2014-03-12 02:14:31

Water Distro 1
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  1. The conversion of liquid water to gaseous water is known as
  2. Compared with a time period of 1 billion years ago, the amount of water
    on earth today is
  3. Essentially the same
  4. 1.                 
    The movement of water from the surface of the earth into the soil is
  5. Percolation
  6. 1.                 
    What percentage of all the earth’s water is readily available as a
    potential drinking water supply in the form of lakes, rivers, and near-surface
  7. 0.34%
  8. 1.                 
    The process by which water changes from the liquid phase to the solid
    phase is
  9. Freezing
  10. 1.                 
    The term for the combined processes which transfer liquid water on the
    earth’s surface into water in the gas phase in the atmosphere is
  11. Evapotranspiration
  12. 1.                 
    The movement of water from the atmosphere to the surface of the earth
    is called
  13. Precipitation
  14. 1.                 
    The process by which water changes from the gas to the liquid phase is
  15. Condensation
  16. 1.                 
    After the oceans and salt lakes and seas, the largest component of
    water storage on earth is
  17. Permanent ice (polar ice caps and glaciers)
  18. 1.                 
    The three states of matter are
  19. Solid, liquid, and gas
  20. 1.                 
    The movement of water on the surface of the earth is called
  21. Runoff
  22. 1.                 
    The freezing point of water is
  23. 32oF
  24. Another term for the percolation that transports water from the surface into an aquifer
  25. Recharge
  26. Which
    of the following is most susceptible to waterborne disease transmittal?
    • a.                 
    • Streams
  27. 1.                 
    Potable water may be defined as
    • Any water that, according
    • to recognized standards, is safe for consumption
  28. 1.                 
    Groundwater is generally characterized by
    • a.                 
    • Consistent quality
  29. 1.                 
    The most significant water quality issue worldwide is
    • a.                 
    • Waterborne disease
  30. 1.                 
    A storage tank holds a volume of water measured to be 150,000 cubic
    feet.  How many gallons is this?
    • a.                 
    • 1,122,000
  31. 1.                 
    A reservoir holds 400 acre-feet of water.  How many cubic feet are in this reservoir?
    • a.                 
    • 17,424,000
  32. 1.                 
    A pipeline’s volume has been calculated to be 200,000 gallons.  How many cubic feet is this?
    200,000 / 7.48 = 26,738
  33. A water-bearing formation in the soil is referred to as
    • a.                 
    • An aquifer
  34. 1.                 
    The safe yield of an aquifer is
    • a.                 
    • The average amount
    • of water that can be withdrawn each year without causing a long-term drop in
    • the water table
  35. 1.                 
    The elevation of the free surface in a water table well which is not
    running is termed
    • a.                 
    • The static water
    • level
  36. 1.                 
    An operating well will drain the water from a volume of soil around the
    well during pumping.  This volume is
    referred to as the
    • a.                 
    • Cone of depression
  37. 1.                 
    The distance between the static water level and the pumping water level
    is termed the
    • a.                 
    • Drawdown
  38. 1.                 
    The height to which water will rise in wells located in an artesian
    aquifer is called the
    • a.                 
    • Piezometric
    • surface
  39. 1.                 
    An aquifer under pressure is often termed
    • a.                 
    • Artesian
  40. 1.                 
    To prevent the entry of surface contamination into a well is the
    purpose of the
    • a.                 
    • Annular grout seal
  41. 1.                 
    An aquifer that is located underneath an aquiclude is called
    • a.                 
    • A confined aquifer
  42. 1.                 
    The free surface of the water in an unconfined aquifer is known as the
    • a.                 
    • Water table
  43. 1.                 
    An aquifer is usually composed of
    • a.                 
    • Sand and gravel
  44. 1.                 
    A formation in the soil that resists water movement (such as a clay
    layer) is called
    An aquitard or aquiclude
  45. 1.                 
    Prior to starting a well, the depth-to-water is measured at 20
    feet.  After pumping for 2 hours, the
    depth to water is measured at 60 feet. 
    The drawdown is
    • a.                 
    • 40 feet
  46. 1.                 
    A well is located in an aquifer with a water table elevation 20 feet
    below the ground surface.  After
    operating for three hours, the water level in the well stabilizes at 50 feet
    below the ground surface.  The pumping
    water level is
    • a.                 
    • 50 feet
  47. 1.                 
    A storage tank is 80-feet in diameter and 24-feet tall.  What is the area of the tank’s top, as
    measured in square feet?
    Pie R2  = 5,024
  48. 1.                 
    The lowest concentration that can be officially reported for any
    constituent in a water sample is known as the
    • a.                 
    • Detection level
    • for reporting
  49. 1.                 
    Drinking water is an example of a(n)
    • a.                 
    • Mixture
  50. 1.                 
    A constituent in
    drinking water is normally regulated as a primary drinking water standard
    because it
    • a.                 
    • Has a known adverse impact on public health
  51. 1.                 
    Primary Drinking Water Standards include which of the following?
    • a.                 
    • All of the above
  52. 1.                 
    All organic compounds contain
  53. Mercury
    and Cadmium are examples of
    • a.                 
    • Metals with
    • primary drinking water standards
  54. 1.                 
    Iron and manganese are examples of
    Staining metals
  55. 1.                 
    The odor of drinking water is
    • Regulated as a secondary
    • drinking water standard
  56. 1.                 
    In drinking water, gross alpha and gross beta emissions are used to
    • a.                 
    • Radioactive
    • contaminants
  57. 1.                 
    Red-colored stains of laundry and porcelain fixtures are likely due to
    elevated levels of
    • a.                 
    • Iron
  58. 1.                 
    Disinfection by-products, solvents, and pesticides are examples of
    • a.                 
    • Organic
    • constituents
  59. 1.                 
    The physical analysis of drinking water includes which of the
    • a.                  
    • Color

    • b.                 
    • Odor

    • c.                  
    • Turbidity

    • d.                 
    • All of the above

    • e.                  
    • None of the above
  60. 1.                 
    Nitrate concentration in drinking water is regulated because it
    • a.                 
    • Impairs the uptake
    • of oxygen in infants, causing methemoglobinemia
  61. 1.                 
    A pH reading of 6.0 units indicates that the water sample is
    • a.                 
    • Slightly acidic
  62. 1.                 
    In terms of actual world-wide deaths, the most dangerous constituents
    in water are
    • a.                 
    • Pathogenic
    • microorganisms
  63. 1.                 
    Constituents in drinking water that are known to present public health
    risks have
    • a.                 
    • Primary drinking
    • water standards
  64. 1.                 
    Manganese has a
    secondary MCL of 0.050 mg/L, because it may cause
    • a.                 
    • Black stains of laundry and porcelain
    • fixtures
  65. Secondary
    Drinking Water Standards are established for which of the following?
    • a.                 
    • None of the above
  66. 1.                 
    In drinking water quality, the abbreviation MCL stands for
    • a.                 
    • Maximum
    • contaminant level
  67. 1.                 
    The symbol “μg/L” is equivalent to
    • a.                 
    • Parts per billion
  68. 1.                 
    For water distribution systems, the term “diurnal” refers to demand
    patterns that vary
    • a.                 
    • Over a 24-hour
    • period
  69. 1.                 
    A specialized reservoir with the main purpose of diminishing risk from
    transient pressure spikes is the
    • a.                 
    • Surge tank
  70. 1.                 
    The component of reservoir storage that is intended to address fire
    flows and main breaks is referred to as
    • a.                 
    • Emergency storage
  71. 1.                 
    A standpipe is a
    • a.                 
    • Device used to
    • relieve pressure surges
  72. 1.                 
    A device that is commonly used to prevent a reservoir from over-filling
    and/or over-draining is the
    • a.                 
    • Altitude valve
  73. 1.                 
    A clearwell is a
    • reservoir at the outlet of
    • a water treatment plant
  74. 1.                 
    A hydropneumatic tank is a device that
    • a.                 
    • Uses air pressure to increase water pressure
  75. 1.                 
    constructed below the ground surface are
    • a.                 
    • Generally of concrete construction
  76. 1.                 
    In addition to
    providing sufficient water supply, reservoirs can be used to
    • a.                  
    • Provide a stable starting pressure entering a distribution system

    • b.                 
    • Provide relief of pressure surges in the distribution system

    • c.                  
    • Provide operational flexibility that may reduce pump starting and
    • stopping

    • d.                 
    • Enable off-peak pumping operations

    • e.                  
    • All of the above
  77. Which of the following reservoir types is most
    likely to have a large amount of ineffective storage?
    • a.                 
    • Elevated tank
  78. 1.                 
    A booster pump
    station’s effluent flow totalizer reads 205478 at midnight on Sunday.  The following Sunday at midnight, the same
    totalizer reads 208898.  This totalizer
    is graduated in 1000’s of gallons.  How
    many gallons of water were pumped this week?
    • a.                 
    • 3,420,000
  79. 1.                 
    How many gallons
    of water are currently stored in a cylindrical tank that is 60 feet in diameter
    and 25 feet tall, if the water level is 18 feet?
    • a.                 
    • 380,490
  80. 1.                 
    What is the
    volume in cubic feet of two miles of 18-inch pipe?
    • a.                 
    • 18,652
  81. 1.                 
    A reservoir holds
    2,500,000 gallons, and the average flow rate in the community is 4500 gpm.  How many cubic feet of water are in this
    • a.                 
    • 334,225
  82. 1.                 
    The surest
    indicator that any single tube in a multiple tube fermentation test has
    positive results is
    • a.                 
    • Gas formation
  83. 1.                 
    The time period
    required to complete both the presumptive and confirmed steps (combined) of the
    multiple tube fermentation test is
    • a.                 
    • 96 hours
  84. 1.                 
    In the ColiLert
    test, a blue colored test vial under UV light indicates the
    • a.                 
    • Presence of E. coli
  85. 1.                 
    The multiple tube
    fermentation analysis consists of
    • a.                 
    • Presumptive, confirmed, and completed tests
  86. 1.                 
    What steps must
    be taken when a single routine sample tests positive for total coliform?
    • Re-test a new sample taken from the original sample
    • point, plus at points immediately upstream and downstream
  87. For drinking water distribution systems with
    over 40 routine coliform samples per month, the maximum amount of
    coliform-positive samples permitted is
    • a.                 
    • 5 %
  88. 1.                 
    The maximum
    disinfectant residual allowed in a distribution system is
    • a.                 
    • 4.0 mg/L
  89. 1.                 
    An alternative
    coliform measurement technique to multiple tube fermentation is
    • a.                 
    • Membrane filtration
  90. 1.                 
    The standard
    indicator of potential fecal contamination of a water supply is
    • a.                 
    • Coliform presence/absence
  91. 1.                 
    Which of the
    following is NOT a characteristic of coliform organisms?
    • a.                 
    • Far less numerous than pathogenic organisms
  92. 1.                 
    The presence of
    coliform bacteria in a distribution system
    • a.                 
    • Indicates that pathogenic organisms may be
    • present also
  93. 1.                 
    A bacteriological
    test that measures only the presence or absence of coliforms is
    • a.                 
    • ColiLert (MMO/MUG)
  94. 1.                 
    What percentage
    of the routine samples in a distribution system must have a detectable residual
    • a.                 
    • 95%
  95. The unique ingredient in the confirmed test of
    the MPN method is
    • a.                 
    • Brilliant green bile
  96. 1.                 
    The result of the
    Multiple Tube Fermentation test is reported as
    • a.                 
    • Most Probable Number
  97. 1.                 
    In the ColiLert
    method, the presence of E. coli can
    be detected
    • a.                 
    • In 24 hours
  98. 1.                 
    The bubbles
    formed in a positive multiple tube fermentation test are
    • a.                 
    • Carbon dioxide
  99. 1.                 
    In the membrane
    filtration test, the appearance of E. coli colonies exhibits
    • a.                 
    • A metallic green sheen
  100. The regulation that establishes standards for
    microbiological quality in drinking water
    • a.                 
    • The Total Coliform Rule
  101. 1.                 
    Rank these three
    groups of bacteria from the largest number of members to the smallest.
    • a.                 
    • Total Coliforms > Fecal Coliforms > E.coli
  102. 1.                 
    A lightweight type of pipe that has a very smooth interior, is
    essentially corrosion-free, and which is difficult to locate when buried is
    • a.                 
    • Polyvinyl chloride
  103. 1.                 
    The lowest point of the inside of a pipe is known as the
    • a.                 
    • Invert
  104. 1.                 
    An example of a pipe material that is difficult to locate underground
    • a.                 
    • Asbestos-cement
  105. 1.                 
    If possible, a water main leak should be repaired under pressure to
    • a.                 
    • Prevent
    • contamination of the water line
  106. 1.                 
    Pipe with a “C” factor of 140 is regarded as having a(n)

  107. Extremely smooth interior
  108. 1.                 
    A connection made into a main that is full or under pressure is called
    • a.                 
    • Wet tap
  109. 1.                 
    The purpose of installing air and vacuum relief valves on pipelines is
    Protect the pipes from serious damage
  110. 1.                 
    A valve that is used to facilitate tapping is the
    • a.                 
    • Corporation stop
  111. 1.                 
    The pipe system layout that is most likely to have water quality
    degradation is the
    • a.                 
    • Tree system
  112. 1.                 
    The measurement of a pipe material’s resistance to pulling is called
    • a.                 
    • Tensile strength
  113. 1.                 
    Uniform corrosion of distribution system pipelines is most likely due
    • a.                 
    • Water quality
  114. 1.                 
    Which of the following metals is least likely to corrode?
    • a.                  
    • Magnesium

    • b.                 
    • Zinc

    • c.                  
    • Lead

    • d.                 
    • Iron

    • e.                  
    • Copper
  115. 1.                 
    Which of the following may alter water quality in the distribution

    Disinfectant residual levels

    Water age

    Low system pressures

    Biofilm formation

    All of the above
  116. All of the above
  117. 1.                 
    Which of the following metals is commonly used in cathodic protection?





  118. 1.                 
    The valve type most commonly used for isolation in a water distribution
    system is the
    • a.                 
    • Gate valve
  119. 1.                 
    When fully open, which of the following will have the highest friction
    • a.                 
    • Globe valve
  120. The effects of trapped gas in pipelines can be minimized with
    • a.                 
    • Air release valves
  121. 1.                 
    The minimum pressure that should be present in distribution system mains
    during fire flow conditions is
    • a.                 
    • 20 psi
  122. 1.                 
    Magnetic flow meters and ultrasonic flow meters are well suited to measure
    flow rates of water with a large concentration of suspended solids, because
    they have
    • No parts within the flow
    • stream
  123. 1.                 
    Dry-barrel fire hydrants have their operating valves
    • a.                 
    • In the base
  124. 1.                 
    A venturi is a device used to
    • a.                 
    • Measure water flow
  125. 1.                 
    The most commonly used meter on small diameter domestic service is the
    • a.                 
    • Nutating disc
    • meter
  126. 1.                 
    The drain hole in a fire hydrant is designed to
    • a.                 
    • Remove water from
    • the riser to prevent freezing
  127. 1.                 
    A compound meter is a device which
    • a.                 
    • Provides accurate
    • readings over a wide range of flows
  128. 1.                 
    Which of the following is a device used to measure flow?
    • a.                 
    • Weir
  129. An
    example of a pressure-differential type water meter is a
    • a.                 
    • Venturi meter
  130. 1.                 
    When closing a hydrant, it should be
    • a.                 
    • Closed slowly to
    • reduce surges
  131. 1.                 
    What category of meters is exemplified by propeller and turbine types?
    • a.                 
    • Velocity
  132. A
    nutating disk is found in certain
    • a.                 
    • Water meters
  133. 1.                 
    A residential meter measures hundreds of cubic feet of water use.  If this meter reads 0044567 on April 1, and
    0044600 on May 1, how many cubic feet of water were delivered to this
    • a.                 
    • 3,300 cubic feet
  134. how many feet verticle = one psi
  135. 9.5 psi would equal how many vertical ft
    about 22

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