The field winding of an alternator
requires
DC supply
AC supply
Pulsating DC
Any one of the above
DC supply
In
alternator, the rotor part consists of field winding, if DC supply is given to
field winding, constant field will be developed. Rotating the rotor will also
rotate the flux, such rotation cuts the conductor in stator and emf is induced
in the armature winding.
Hence,
the correct option is (A).
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