(a)R_o(in ohms)=   
 
    645.33333  
 
 (b)X_o(in ohms)=   
 
    329.32029  
 
 (c)resistance reffered to low voltage side(in ohms)=   
 
    0.15488  
 
 (d)reactane reffered to low voltage side(in ohms)=   
 
    0.3160952