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the efficiency of transformer is more than alternator, because

1- the alternator have friction and windage loss but in transformer this not occure.

2- in the alternator the flux leak is more than the transformer, because in case of alternator the flux move through the air which is dimagnet and in transformer flux move through silicon steel.

3- in the other hand alternator have dc compound generator for exciation (depend on other electric course 220volt) but in t/f is not need.

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13y ago

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