Need singe phase example exercises

Discussion in 'Homework Help' started by mauz243, Apr 7, 2012.

  1. mauz243

    Thread Starter New Member

    Apr 7, 2012

    I really need some example exercises about single phase current. One has to be a parallel circuit and the other one serial.

    So it has to be solved exercise so I could understand the required formulas and so on.

    I couldn't find anything by myself.

    There's one on book named "Electrical Circuit Theory and Technology". It should be something similar to this, but anything will help.

    A motor has an output of 6kW, an efficiency
    of 75% and a power factor of 0.64 lagging
    when operated from a 250V, 60Hz supply. It
    is required to raise the power factor to 0.925
    lagging by connecting a capacitor in parallel
    with the motor. Determine (a) the current
    taken by themotor, (b) the supply current after
    power factor correction, (c) the current taken
    by the capacitor, (d) the capacitance of the
    capacitor and (e) the kvar rating of the capacitor.

    Thank you for your time