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An autotransformer is supplied at 240V. If the secondary is tapped to give 60V with a load current of 12A, calculate the other two circuit currents and show the direction of current and voltages (5 marks)


Solution
V1 = 240V, V2 = 60V, i1 = 12A
(I)THE OTHER TWO CIRCUIT CURRENTS
From transformer ratio K = V1/V2 = i2/i1
240/60 = 12/i1
i1 = 60 × 12/ 240
i1 = 3A
Recall,
i1 = i2 + i3, i3 = [i2 – i1]i3 = 12-3
i3 = 9A

Check the direction on the YouTube video link shown below

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https://youtu.be/z_4nI9UiEIs

Oluwamuyide Peter

My name is seyi, the main aim of creating this platform is to help users get information like school updates, electrical engineering topics and many more for free

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