To improve the efficiency of a transformer:
Correct answer: D. All of above
- A. Insulation should be perfect
- B. Resistance of both should be least
- C. Core should be laminated
- D. All of above
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About Electromagnetic Induction
Changing magnetic flux induces an emf according to Faraday's law, while Lenz's law gives the direction that opposes the change producing it. Transformers apply induction between coils to step alternating voltage up or down, with turns ratio, current transformation and energy losses determining practical operation.
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Eddy currents are the induced currents which are setup:
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