2007-11-19 13:27:24 · 4 answers · asked by leon_att 1 in Science & Mathematics ➔ Engineering
DC motors require a brush/commutator system which wears out, or switching electronics to make a brushless motor.
AC motors can be made that have no commutator and spin simply due to the phasing of the coils. These can essentially have a very long lifetime with low cost and very little maintenance compared to DC motors of similar power. Even the AC motors that use slip rings are much simpler than DC commutation, and tend to last much longer with fewer problems.
2007-11-19 14:53:29 · answer #1 · answered by Alan K 2 · 0⤊ 0⤋
The most obvious is that AC power is more readily available. Another is that synchronous motors run at specific speeds but DC motors run at speeds that vary dependent on their voltage.
2007-11-19 22:40:10 · answer #2 · answered by Rich Z 7 · 0⤊ 0⤋
wel in Dc you are going to have battery, and the you will have to have a charge it, use Ac you can do so much more like
2007-11-19 21:36:46 · answer #3 · answered by brad l 1 · 0⤊ 1⤋
For.....?
2007-11-19 21:30:38 · answer #4 · answered by Hgldr 5 · 0⤊ 0⤋