A single$-$phase, $300$ kVA, $11$ kV$=2$:$2$ kV$,60$ Hz transformer has the following equivalent circuit parameters referred to the high$-$voltage side: Rc$$HV$=57$:$6$ k$,$ Xm$$HV$=16$:$34$ k$$ Req$$HV$=2$:$784$ Xeq$$HV$=8$:$45($a$)$ Determine $($i$)$ No$-$load current as a percentage of full$-1$ load current. $($ii$)$ No$-$load power loss $($i$.$e$.,$ core loss$).($iii$)$ No$-$load power factor. $($iv$)$ Full$-$load copper loss. $($b$)$ If the load impedance on the low$-$voltage side is Zload $=16=60$ determine the voltage regulation using the approximate equivalent circuit.