Question

In a 3-phase cylindrical rotor alternator the _________

(a) field mmf leads air gap flux, air gap flux leads armature flux

(b) field mmf leads air gap flux, air gap flux lags armature flux

(c) armature mmf leads air gap flux and air gap flux leads field flux

(d) armature mmf leads air gap flux and air gap flux lags field flux

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Answer 1

Right option is (a) field mmf leads air gap flux, air gap flux leads armature flux

To explain: Check the phasor diagram.