Which of the following are true about Transformers. 1) Function of transformer i

Question

Which of the following are true about Transformers.

1) Function of transformer is to convert stored high power electrical energy into low power electrical energy
2) Voltage across secondary step-up transformer is greater than that across the primary
3) They only operate on dc current
4) voltage across the secondary of step-up transformer will be smaller than that across the primary
5)current through primary step down will be smaller than current through the secondary
6) function of transformer is to convert stored low power electrical energy into high power electrical energy
7) Ignoring dissipative losses, the power through the secondary of a step-down transformer will be less than the power through the primary.

Explanation / Answer

4 and 5 are true

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