power problem

Discussion in 'Homework Help' started by jstrike21, Nov 19, 2009.

  1. jstrike21

    Thread Starter Member

    Sep 24, 2009
    104
    0
    Dont really know how to start these any help would be awesome!
     
  2. jstrike21

    Thread Starter Member

    Sep 24, 2009
    104
    0
    I need help on number 2 mainly I'm not sure what route to take on this. The resistor and inductor on the bottom are confusing me.
     
  3. t_n_k

    AAC Fanatic!

    Mar 6, 2009
    5,448
    782
    You have sufficient information to calculate the individual currents (complex form - magnitude and phase) in L1 & L2.

    Then you can find the total current (complex number sum IL1 + IL2).

    The total current flows in series with R1, R2, XL1 & XL2. Hence you can determine the total voltage drop across these series elements.

    The source voltage is then the total series drop across R1, R2, XL1, XL2 plus VL. Again - this is a complex number summation.
     
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