short line model

Discussion in 'General Electronics Chat' started by pot, Nov 16, 2015.

  1. pot

    Thread Starter New Member

    Nov 9, 2015
    9
    0
    hi

    i have small question why the angle in negative?

    I know the s∠cos-1 (0.8) = s∠36.87

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  2. wayneh

    Expert

    Sep 9, 2010
    12,139
    3,054
    Is the key word "lagging"?
     
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  3. #12

    Expert

    Nov 30, 2010
    16,310
    6,817
    The definitions of 'lead' and 'lag' were decided by people. They had to choose whether to describe if the voltage was leading or the current was lagging, or the other way around. It's called a, "convention" which means nothing more than an agreement among people. Your job is to become familiar with the agreement so you can be understood when you communicate about power factors. That's all it is, a way of communicating effectively.
     
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