Transformers
Losses which occur in rotating electric machines and do not occur in trans formers are

magnetic losses
friction and windage losses
hysteresis and eddy current losses
copper losses

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Transformers
In a power or distribution transformer about 10 per cent end turns are heavily insulated

None of these
to reflect the line surge and save the winding of a transformer from damage
to absorb the line surge voltage and save the winding of transformer from damage
to withstand the high voltage drop due to line surge produced by the shunting capacitance of the end turns

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