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The voltage regulation is I(Rcosa -Xsina)/Vr

For leading pf

Here %of regulation=(VRcosa-Vxsina)/Vr ×100 %=((4×0.8)-(6×0.6))/100 ×100% =-0.4

Where I am doing wrong?

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    \$\begingroup\$ I tried my best to try to structure your question so that it makes sense, but I still don't understand it. \$\endgroup\$ – Marcus Müller Oct 11 '20 at 15:42
  • \$\begingroup\$ Its a power system transmission line problem... thanks for trying it for me \$\endgroup\$ – Camila's voice Oct 11 '20 at 16:23

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