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Alternator has DC field which generates constant magnetic field in Armature. Generator has permanent magnet which generates constant magnetic field in stator. 12. In alternator we take supply from its stator. In generator we take supply from rotor. It is a major difference between alternator and generator.
They are both internal combustion engines. One is driving a transmission and a vehicle and the other is driving a generator. A generator is used to to â¦ produce DC current, that is driven by an electrical AC motor, Hench the term Motor-Generator applies. An engine uses it's own source of fuel, Gasoline, for it's power source. Never call a ENGINE a MOTOR..........