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what is automatic voltage regulator and it is used?
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Answer Posted / vijay
the fullform of avr is Autometic voltage regulator,
basically avr is used in transformer and genrators.
in transformer it works with PT and a tap changer motor
which autometically change the tap to control the voltage.
in genrators avr sense the voltage with the help of PTs and
control the exciting current in exciter to canrol the
voltage.
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