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    Complex Power

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    Calculate S, complex power of a load (in rectangular form), given the following data:
    magnitude of S = 600 VA; Q = 450 VAR (inductive). See attached file for full problem description.

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    Solution Preview

    Please see the attached file.


    Total power of a reactive load can be expressed as :

    S = VI cosθ + j VI sinθ where V and I are rms values of voltage and current and θ is the phase angle. ............(1)

    In (1) VI cosθ is known as the active ...

    Solution Summary

    The problem has been solved first explaining the fundamental principles involved.