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What is auto transformer?
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Answer Posted / ayub rahman
The autotransformer has only one winding. In this special
kind of transformer a portion of the winding is common to
both the primary and secondary one.
The principle of operation of the autotransformer is the
same as the one of the common transformer, and then the
relation between input and output voltages and input and
output currents and the ratio of number of turns between
the primary and the secondary winding is the same.
The currents of the primary and secondary windings are
flowing on the opposite directions, so the total current
flowing through the common part of the winding is equal to
the difference between the current on the low-voltage
winding and the current on the high-voltage winding.
In order for an autotransformer to work properly, the two
windings should have the same winding sense.
| Is This Answer Correct ? | 18 Yes | 1 No |
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