Difference Between DC Motor and AC Motor

Motors are the machines which convert electrical energy into the mechanical energy. In this post, you’ll learn the difference between DC and AC Motors.

DC Motors AC Motors
As obvious from the name, a dc motor uses direct current as input. An ac motor takes alternating current at its input.
The speed of dc motors is controlled by controlling the current in the armature. Speed is varied by changing the supply frequency.
Its construction involves brushes and commutator which require a lot of maintenance. Their construction is difficult but don’t suffer from wear and tear and are long lasting machines.
Are not popular in industries. Are popular machines in industries almost cover 90% of the electrical industry.

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