Q$5$ : $.$ a Explain the in the terminal of a load the $,$ if change lowers from $1$ to points voltage $.09$ power factors $[5$ b $.$ If the is $3\%,$ what will be the eincuit voltage at the regulation transformer's secondary open side $1,$ if the input is voltage $.03$ pu $?$ voltage $[5$ points$]$ C $.$ What is the objective of the method in power primary $.$ Are Newton$-$Raphson the solutions unique to a power system analysis system $?[10$ points$]$