$1.$ A $1$phase, $30$ KVA, $440/110$ V$,60$ Hz transformer give the following test results:

$$ Open Circuit test $(440$ V side open$)$ :

$110$V$,17\mathrm{.}7$A$,380$W

$$ Short Circuit test $(110$ V side shorted$)$:

$50\mathrm{.}5$V$,68$A$,1980$ W

Obtain an equivalent circuit of the transformer referred to the high$-$voltage side.