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What is the working of AVR in AC generators?
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Answer Posted / rakesh
The function of the AVR is to automatically regulate the voltage of generators. As a load on a generator increases it's terminal voltage tends to droop.The AVR senses the drop in terminal voltage by measuring the generator voltage and boosts up the excitation to the field of the generator to maintain the terminal voltage at the set level.Similarly as the load on the generator falls, the terminal voltage is maintained by the AVR by reducing the excitation to the field.
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