Are You A Pump Ninja?

5 Questions | Total Attempts: 39

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Are You A Pump Ninja?

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Questions and Answers
  • 1. 
    Given a specific fluid to be pumped, at what viscosity range should you begin to apply viscous corrections to the hydraulic performance for a centrifugal pump? 
    • A. 

      5 to 15 centipoise

    • B. 

      Above 300 centipoise

    • C. 

      Above 600 centipoise

    • D. 

      Centrifugal pumps do not require viscosity corrections.

  • 2. 
    For a given size piping system, adding a second identical pump in parallel will …
    • A. 

      Increase the flow rate to a point determined by the system curve.

    • B. 

      Double the flow.

    • C. 

      Double the pressure (head).

    • D. 

      None of these answers is correct.

  • 3. 
    Water will boil at what temperature (F)? 
    • A. 

      It depends on the pressure.

    • B. 

      212

    • C. 

      100

    • D. 

      33

    • E. 

      600

  • 4. 
    When starting up a centrifugal pump, the suction valve should always be ... 
    • A. 

      Fully open.

    • B. 

      Partially open, then opened the rest of the way a few minutes afterward.

    • C. 

      Fully closed.

    • D. 

      It doesn't matter, because it is a centrifugal pump.

  • 5. 
    Which fluid, when subjected to cavitation conditions, will normally create the most damage in a pump (assuming all other conditions are the same)? 
    • A. 

      Water at 68 F

    • B. 

      Gasoline (87 octane) at 75 F

    • C. 

      Ethylene glycol mixed with water at 50 percent (180 F)

    • D. 

      Ethanol at 75 F

    • E. 

      Naval jet fuel JP5 at 68 F

    • F. 

      Water at 300 F

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