Answer / aman arora

Because to
induce EMF in
alternator some
potential
required and it
sets up megnetic
field. And when
the rotor rotats
in megnetic
filed then that
minor potential
becomes its
rated output
votage

Answer / yaseen

A SMALL GENERATOR IS REQUIRED TO EXITE THE ALTERNATOR .OR
YOU CAN BATTERY OF DC SOURCE TO EXITE THE ALTERNATOR

Answer / bikkinas

a small dc generator used to gave the excitation

Answer / bahadure.kapil

alternater is power generating mashine.to generate power &
to field exietation of alternater.so required of exietation
to the alternater.

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