Tests are performed on a single phase, $10$ kVA, $2200/220$ V$,60$ Hz transformer and the following results are obtained: Open$-$Circuit Test Short$-$Circuit Test $($Measured in the Secondary$)($Measured in the Primary$)$ Voltmeter $220$ V $155$ V Ammeter $2\mathrm{.}5$ A $4\mathrm{.}6$ A Wattmeter $100$ W $220$ W $($a$)$ Derive the parameters for the approximate equivalent circuit of the transformer referred to the low$-$voltage side and the high$-$voltage side; $[7$ marks$]($b$)$ Express the excitation current as a percentage of the rated current; $[2$ marks$]($c$)$ Determine the power factor for the no$-$load and short$-$circuit tests; $[2$ marks$]($d$)$ Determine the voltage regulation in percent for $75\%$ full load and $0\mathrm{.}6$ power factor leading. $[6$ marks$]$ Neglect core losse