(a) Draw the circuit  diagram of the following d.c. generators:  
        (i)        series;  
        (ii)       shunt.  
                              (b) A d.c. shunt generator  supplies a current of 28 A at 400 V. The  armature  
                              and field resistances are 0.5 Q and 200 Q  respectively. Calculate  the:  
        (i)        field current;  
        (H)      armature current.  
                              The expected answers  were:  
(a)  
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1  
                                                                       ~l____________ ' __ ~l                  .  
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(a)  
                               
                                
                               
                              
                                ii~~ .  
                                  VT .~  
                                  
                                
                                  
                               
                               
                                
                               
                              
                                (b) (i)  
                                
                                  
                                  
                                  =~=2A  
                                  200  
                               
                               
                                
                               
                                                              (ii)       Ia = IL + If  
                                = 28 + 2 = 30 A   |