ac circuit

Discussion in 'Homework Help' started by Joess7, May 16, 2009.

  1. Joess7

    Thread Starter New Member

    May 12, 2009
    3
    0
    what is the formula to find power factor in an AC circuitry? thanks for the help
     
  2. hgmjr

    Moderator

    Jan 28, 2005
    9,030
    214
    Here is a link to the section on power factor located in the AAC ebook. You will find the equation there.

    hgmjr
     
  3. mik3

    Senior Member

    Feb 4, 2008
    4,846
    63
    power factor=(real power)/(apparent power)
     
  4. skibum9x99

    New Member

    May 22, 2009
    2
    0
    Instantaneous or Average Power Factor? Instantaneous = W (E*I)*(COS of Phase Angle Difference between the Voltage and Amperage) / VA....or Average over time: kWh / kVAh. If kVAh are not available; √ kWh2 + kVARh2 .
     
  5. skibum9x99

    New Member

    May 22, 2009
    2
    0
    My mistake! The previous equation will give you kVAh, then use kVAh/kWh for average PF. Sorry!
     
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