Question: 3 Prove that for a 3 - wire, wye - connected, stator winding we have a s + b s + c s = 0

3 Prove that for a 3-wire, wye-connected, stator winding we have as+bs+cs=0. For this to be true, is it necessary for the rotor windings to also be connected in a 3-wire wye arrangement? Is as+bs=0 for a 2-phase stator winding? Why?
3 Prove that for a 3 - wire, wye - connected,

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