what condition there autotransformer will fail?

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what condition there autotransformer will fail?..

Answer / d.lakshmi narayana

Unbalance the tap voltage &To take proper tap voltage for
motor starting load

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what condition there autotransformer will fail?..

Answer / anonymous

Isolation. Autox'mer has only one winding as the secondary
voltage are tapped off from the same winding.

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