Question $3[15$ points$]$:

A $1000-$VA $230/115-$V transformer's measured parameters referred to the low voltage $($or secondary$)$ side are as follows:

$R_{\text{e}\text{q}\text{s}}=0\mathrm{.}140,x_{\text{e}\text{q}\text{s}}=0\mathrm{.}532,R_{CS}=441,x_{MS}=134$

Find the transformer's voltage regulation $($VR$)$ at rated conditions and $0\mathrm{.}8$ PF leading load.

HINT $1$: Use rated apparent power and secondary voltage to compute secondary current and use the specified PF to find the secondary current phasor.

HINT $2$: Use the equivalent circuit of a real transformer referred to the secondary side from Question $2.$