difference between Ac and DC electric motors?
dc moters are not realy used any more. and ac moter is powerd three phase by 415 volts.i think the difference is ac moters are more powerful and you can use capasitors and inverters to up the frequency tere for the ac moter will spin faster and more powerfully.
one uses alternate current which is slightly unstable meaning the power fluctuates) and one uses direct current. (more stable)
DC motors often use permanent magnets in which case you can't use them on AC. However there is a class of motor that can be equally used on AC and DC and these have a field winding instead of a magnet. Other AC motors depend on a phase shift and you can't do this in DC. Wikipedia explains all the different types of electric motor.
AC is alternate current and DC is direct current. AC - the construction is in such a way that it serves current in an alternate terminals. DC- it is in such a way that the current is always thro' direct.
simple ac means alternating current dc means direct current
