Refer to fig:4.31a   
 
 (a) primary winding voltage (in Volts)=   
 
    2640.  
 
 (b) secondary winding voltage (in Volts)=   
 
    240.  
 
 (c) ratio of transformation=   
 
    11.  
 
 (d) nominal rating of transformer (KVA)=   
 
    26.4  
 
 Refer to fig:4.31b   
 
 (a) primary winding voltage (in Volts)=   
 
    240.  
 
 (b) secondary winding voltage (in Volts)=   
 
    2640.  
 
 (c) ratio of transformation=   
 
    0.0909091  
 
 (d) nominal rating of transformer (KVA)=   
 
    26.4  
 
 Refer to fig:4.31c   
 
 (a) primary winding voltage (in Volts)=   
 
    2640.  
 
 (b) secondary winding voltage (in Volts)=   
 
    2400.  
 
 (c) ratio of transformation=   
 
    1.1  
 
 (d) nominal rating of transformer (KVA)=   
 
    264.  
 
 Refer to fig:4.31d   
 
 (a) primary winding voltage (in Volts)=   
 
    2400.  
 
 (b) secondary winding voltage (in Volts)=   
 
    2640.  
 
 (c) ratio of transformation=   
 
    0.9090909  
 
 (d) nominal rating of transformer (KVA)=   
 
    264.