|Nov13-09, 07:24 AM||#1|
dc machines cores
why are laminated rotor cores used in dc machines (with dc current in the rotor) when there is no possibility of eddy current (or is there?).
|Nov13-09, 10:15 AM||#2|
If the rotor has a commutator, the currents in the rotor windings are not dc, and the core must be laminated. If the rotor has slip rings, the currents are almost dc.
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