why do you give the dc supply to field of alternator
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Answer Posted / meenakshi
The rotor of alternator consists of a coil of wire wrapped
around an iron core. Current through the wire coil -
called "field" current - produces a magnetic field around
the core. The strength of the field current determines the
strength of the magnetic field. The field current is D/C,
or direct current so that the current flows in one
direction only, and is supplied to the wire coil
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