Difference between Alternator and Generator

Question

Accepted Answer

Alternator and generator both convert mechanical energy into electrical energy, but differ in their construction and working principle.

Alternators produce AC current while generators produce DC current
Alternators have a stationary armature and rotating magnetic field while generators have a rotating armature and stationary magnetic field
Alternators are more efficient and reliable than generators
Examples of alternators include those used in cars and power plants while examples of generators include those used in portable power tools and backup generators

Accepted Answer

An Alternator is a device that converts mechanical energy into AC electrical energy.

A Generator is a mechanical device which converts mechanical energy to either AC or DC Electrical energy.

Alternator has rotating magentic field.

Generator has stationary magentic field.

Alternator has stationary armeture conductor.

Generator has rotating conductor

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