Give me an exampleA $10$ kV A single$-$phase transformer, for $2000$ V$/400$ V

at no load, has resistances and leakage reactances as

follows. Primary winding: resistance, $5\mathrm{.}5$; reactance,

$12.$ Secondary winding: resistance, $0\mathrm{.}2$; reactance,

$0\mathrm{.}45.$ Determine the approximate value of

the secondary voltage at full load, $0\mathrm{.}8$ power factor

$($lagging$),$ when the primary supply voltage is $2000$ V$.$ of