Page 683 - Basic Electrical Engineering
P. 683

Dividing both numerator and denominator by S,








               The equivalent circuit representation of the rotor for the above equation has

               been shown in Fig. 8.9 (b). This is the condition of the circuit when the rotor
               is at standstill with E  as the EMF induced, I  as current flowing, X  as the
                                                                                                 20
                                                                      2
                                         20
               rotor-circuit reactance, and R /S the rotor-circuit resistance. But we know that
                                                  2
               the rotor-circuit resistance is R  and not R /S.
                                                                  2
                                                    2
                  To get R  as the resistance we write R  as
                             2
                                                                2/S

















               In     . we see two resistances, viz rotor-circuit resistance R  and another
                                                                                      2




               resistance               The question that arises is what is the significance of
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