single-phase AC voltage controller

Discussion in 'Homework Help' started by notoriusjt2, Oct 18, 2010.

  1. notoriusjt2

    Thread Starter Member

    Feb 4, 2010
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    0
    [​IMG]
    here is my work so far
    [​IMG]
    where did I go wrong?
     
  2. t_n_k

    AAC Fanatic!

    Mar 6, 2009
    5,448
    782
    sin(2α)=sin(120°)=0.866 not 0.0365
     
  3. notoriusjt2

    Thread Starter Member

    Feb 4, 2010
    209
    0
    α is equal to the angle in radians

    if α=1.047RAD
    then
    2α=2.094RAD

    no?
     
  4. t_n_k

    AAC Fanatic!

    Mar 6, 2009
    5,448
    782
    And the sin of 2.094 rad is 0.866.

    Did you put your calculator in radian mode?
     
  5. notoriusjt2

    Thread Starter Member

    Feb 4, 2010
    209
    0
    DOH!


    yup definitely forgot radian mode

    thanks
     
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