a step up transformer used for

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i) What is a step up transformer used for?
ii) A transformer has an input voltage of 240 V and a primary coil with 400 turns. if the output voltage is 12 V.
Calculate how many turns are there on the secondary coil
Transcribed Image Text:i) What is a step up transformer used for? ii) A transformer has an input voltage of 240 V and a primary coil with 400 turns. if the output voltage is 12 V. Calculate how many turns are there on the secondary coil
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