Question: A 3 - Phi line delivers 1 MW at 0 . 8 pf lagging. The series impedance of the line is 4 + j

A 3-\Phi line delivers 1 MW at 0.8 pf lagging. The series impedance of the line is 4+j6
per phase. Calculate the sending end voltage if the load voltage is to be maintained
and addition of load at the receiving end increases the line current by 50% and raises
the power factor to 0.9 lagging. Also calculate the equivalent series impedance of the
total load and voltage regulation.

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