Conductivity Basics

11 Questions | Total Attempts: 255

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Electricity Quizzes & Trivia

Conductivity Basics


Questions and Answers
  • 1. 
    Conductivity is defined as
    • A. 

      The ability of a substance to repel electric current.

    • B. 

      The ability of a substance to conduct electric current, which is the same as resistivity.

    • C. 

      The ability of a substance to conduct electric current, which is the reciprocal of resistivity.

    • D. 

      The ability of a substance to conduct variable resistance.

  • 2. 
    Most industrial interest is in measuring the conductivity of liquids, which generally consist of _____compounds dissolved in water.
    • A. 

      Molecule

    • B. 

      Ionic

    • C. 

      Proton

    • D. 

      Neutron

  • 3. 
    Generally users of ultra pure water prefer to use resistivity units of ____________.
    • A. 

      Mohm-cm or Kohm-cm

    • B. 

      Siemens/cm

    • C. 

      US/cm or mS/cm

    • D. 

      Toroidal

  • 4. 
    The draw back to conductivity is that it is a non-specific measurement;
    • A. 

      It cannot distinguish between various types of ions

    • B. 

      The reading is proportional to the combined effect of all ions present

    • C. 

      Resistance is inverse to conductivity

    • D. 

      Ohms are not accurate

  • 5. 
    A conductivity cell can change slowly over time from physical changes taking place such as
    • A. 

      Chemical oxidization

    • B. 

      Scratches

    • C. 

      Coating

    • D. 

      Low battery

  • 6. 
    A toroidal conductivity measurement is made by passing a ___ current through a toroidal drive coil
    • A. 

      Variable

    • B. 

      DC

    • C. 

      AC

    • D. 

      Non-linear

  • 7. 
    Toroidal conductivity measurement is based on the electrical connection called a ______ that changes based on the solution conductivity
    • A. 

      Resistance field

    • B. 

      Current field

    • C. 

      Conductivity field

    • D. 

      Non of the above

  • 8. 
    Toroidal conductivity can also be referred to as______
    • A. 

      Insulation

    • B. 

      Reactive

    • C. 

      Resistive

    • D. 

      Inductive

  • 9. 
    One of the main disadvantages of toroidal conductivity measurements is that it lacks the sensitivity of __________ measurement.
    • A. 

      Contacting

    • B. 

      Resistance

    • C. 

      Inductive

    • D. 

      Real conductivity

  • 10. 
    The inverse of resistivity is called______
    • A. 

      K-OHM

    • B. 

      US

    • C. 

      MS

    • D. 

      Conductivity

  • 11. 
    0.01uS expressed in resistivity is ____
    • A. 

      100 K-ohm

    • B. 

      1,000 K-ohm

    • C. 

      100 M-ohm

    • D. 

      10 M-ohm