AC Generator | DC generator |
AC generator is a mechanical device which converts mechanical energy into AC electrical power. |
DC generator is a mechanical device which converts mechanical energy into DC electrical power. |
In an AC generator, the electrical current reverses direction periodically. |
In a DC generator, the electrical current flows only in one direction. |
AC generator does not have commutators. |
DC generators have commutators to make the current flow in one direction only. |
AC generators have slip-rings. |
AC generators have slip-rings. |
AC generators require very less maintenance and are highly reliable. |
DC generators require frequent maintenance and are less reliable. |
AC generators are very efficient as the energy losses are less. |
DC generators are less efficient |
It is used to power for smaller motors and electrical appliances at homes (mixers, vacuum cleaners, etc.) |
DC generators power very large electric motors |