Please Help - What is the device people use to map out current?

Discussion in 'Homework Help' started by mehavecupcake, Feb 26, 2016.

  1. mehavecupcake

    Thread Starter New Member

    Feb 26, 2016
    6
    0
    Hi,
    Just wondering if I could get some help. I'm doing a project on AC and I need to know what they used to find out that alternating current is a wave.

    Thanks in advance!:)
     
  2. #12

    Expert

    Nov 30, 2010
    16,248
    6,745
    The wave theory of electricity is a theory, so I would have to guess the instrument used was a human brain or mathematics.
     
    mehavecupcake likes this.
  3. mehavecupcake

    Thread Starter New Member

    Feb 26, 2016
    6
    0
    Thanks!
    So that means no device was used to figure out that AC travels in a sine-wave like shape?
     
  4. mehavecupcake

    Thread Starter New Member

    Feb 26, 2016
    6
    0
    Sorry, let me rephrase the question.

    How would Nikola Tesla have proven that his Poly-phase Distortion Motor produced alternating current as opposed to direct current?
     
  5. #12

    Expert

    Nov 30, 2010
    16,248
    6,745
    Faraday. Electrical movement is caused by a magnet and a wire that are moving relative to each other. If they move, the amplitude simply must change. At what rate? That goes to simple geometry. Magnetic density at a distance changes according to the amount of distance. Figure the motion and the relative intensity and you have a sine wave.
     
  6. crutschow

    Expert

    Mar 14, 2008
    12,977
    3,220
    He could have "proved" it was alternating current by showing that it would magnetically couple between two coils, whereas DC wouldn't.
     
  7. nsaspook

    AAC Fanatic!

    Aug 27, 2009
    2,906
    2,159
    What is a Poly-phase Distortion Motor?
     
  8. #12

    Expert

    Nov 30, 2010
    16,248
    6,745
    I get a lot of google hits about why voltage and current distortion is bad in polyphase motors, but nothing about intentional distortion inflicted on or resulting from a polyphase motor.:confused:
     
  9. mehavecupcake

    Thread Starter New Member

    Feb 26, 2016
    6
    0
    It's Tesla's AC motor.
    Poly-phase refers to "multiple stage".
    I meant to say induction instead of distortion
    And motor is pretty self explanatory.
     
  10. mehavecupcake

    Thread Starter New Member

    Feb 26, 2016
    6
    0
    I'm also doing another project on motor distortion.
     
  11. nsaspook

    AAC Fanatic!

    Aug 27, 2009
    2,906
    2,159
    Learn something new everyday.
     
  12. JoeJester

    AAC Fanatic!

    Apr 26, 2005
    3,373
    1,157
    Poly, as a prefix, means many. I took your phrase Poly-phase, to mean many phases, not multiple stage. Polyphase was originally used to describe three phase systems in the early days accoring to this website.
     
  13. mehavecupcake

    Thread Starter New Member

    Feb 26, 2016
    6
    0
    Thanks for correcting me
     
Loading...