Quiz #3

  1. What is a difference between pumps used for water verses pumps used for sewage?
    1. Pumps used for water have larger tolerances to handle higher flows, and are less efficient than wastewater.
    2. Fewer additional pumps are needed when used for water because systems use gravity.
    3. Pumps used for water have closer tolerances and are more efficient than those used for wastewater.
    4. Pumps used for water systems are smaller than those for wastewater.
  2. Which of the following statements about grinder pumps is true?
    1. Grinder pumps should be designed to have a scouring velocity of at least 2 ft/sec.
    2. Inflow and Infiltration can occur in a grinder pump system.
    3. The number of grinder pumps is limited by the design of the force main.
    4. All of the above are true
  3. Which of the following are factors that impact pump selection?
    1. Location of pump
    2. What is being pumped
    3. Pumping need (Head and Capacity)
    4. All of the above
  4. Centrifugal pumps are classified by which of these factors:
    1. Size, efficiency, usage
    2. Hydraulic design, flow pattern, configuration
    3. Efficiency, usage, configuration
    4. Flow pattern, usage, configuration
  5. Daily pump logs
    1. Can help determine the raw water quality.
    2. Can be useful to detect leaks on the water side, but are not needed for sewage.
    3. Help monitor for leaks and inflow and infiltration, and can help with Chapter 94 reports.
    4. Are only helpful for Chapter 94 reporting.
  6. Pump selection is
    1. A simple task, the only factor to consider is the amount of water being pumped (capacity).
    2. An involved process which requires evaluation of multiple factors.
    3. Limited due to the few types of pumps available.
    4. None of the above
  7. Centrifugal Pumps have many configurations. Some of the differences between these configurations include
    1. The number and placement of impellers
    2. Whether the pump shaft is vertical or horizontal
    3. The case type and how the pump is accessed
    4. All of the above
  8. Shaft alignment is a major concern with close-coupled pumps.
    1. True
    2. False
  9. End suction pumps
    1. Are normally single stage pumps
    2. Have suction and discharge ports are at 90-degree angles to each other
    3. Can be either frame-mounted or close-coupled
    4. All of the above
  10. In a multistage pump increasing the number of impellers increases the discharge pressure but the volume of water pumped is dependent upon the capacity of the first impeller.
    1. True
    2. False