A commutator is to ensure the [ Select ] input stator output field winding from the generator   is [ Select ] AC backwards rectified DC and not [ Select ] AC low high Reversed .多重下拉选择题

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A use for a separate excited DC generator would be in a moving coil meter.

A separately excited DC generator would be a:

To reverse the output polarity of a DC generator you reverse the [ Select ] field leads current voltage direction of rotation or [ Select ] Armature leads rotation magnets current   but not both.

Which of the below is NOT a type of DC generator?

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