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lilMissMindset

two electric devices A & B are connected in parallel and the rms current in A is 15 A. If the current in B lags behind A by pi/2 radians and the line current is 23.4 A. Determine the current in B

  • one year ago
  • one year ago

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  1. lilMissMindset
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    @satellite73 help me here please.

    • one year ago
  2. radar
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    |dw:1347318735842:dw| Load B Lags A by 90 degrees. The line is the resultant you Pythagorean theorem

    • one year ago
  3. radar
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    \[\sqrt{23.4^{2}-15^{2}}\]

    • one year ago
  4. lilMissMindset
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    why subtract?

    • one year ago
  5. lilMissMindset
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    i get it why. lol

    • one year ago
  6. radar
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    The line current is the resultant or the "total" In order to separate the total to the individual components, subtraction is the logical choice.

    • one year ago
  7. lilMissMindset
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    so that is the current in B?

    • one year ago
  8. radar
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    Yes about 18 amps

    • one year ago
  9. lilMissMindset
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    another question, what is the difference between rms current and line current?

    • one year ago
  10. radar
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    It is an inductive load when compared to the 15 amp load, or you could say the A is a capacitive load when compared to B. It is all relavent.

    • one year ago
  11. radar
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    The line current is the combined currents of the two loads and is the current traveling to and fro from the power source. It is of course AC as we are talking RMS, all the currents in this problem is assumed to be measured in RMS units......including the line current.

    • one year ago
  12. radar
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    Root Mean Square (RMS) is the most common value to measure AC, it is the value that DC current would produce as heat when the AC RMS value is converted to heat.

    • one year ago
  13. radar
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    Kind of confusihng, but AC has several values of current/voltage. Peak Peak to Peak RMS (root mean square) Average

    • one year ago
  14. lilMissMindset
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    ok. thanks a lot! :)

    • one year ago
  15. radar
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    Good luck, are you pursueing an electrical engineering major?

    • one year ago
  16. lilMissMindset
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    no. actually, my major is mechanical engineering, it's just that it's an elective course.

    • one year ago
  17. lilMissMindset
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    are you ana electrical engineer?

    • one year ago
  18. radar
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    Understand, good luck with it, and I think you are getting into a great field.

    • one year ago
  19. lilMissMindset
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    thank you. :) hope i can make it. :)

    • one year ago
  20. radar
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    Not a degreed EE, but an EE as far as the U.S. Government, I was a GS-855 for the FAA for years. There are other methods to become an engineer, but I recommend the method you are going, a formal education with a degree.

    • one year ago
  21. lilMissMindset
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    i see. hail to all engineers. :)

    • one year ago
  22. radar
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    HooRah! Yeah

    • one year ago
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