The efficiencyof a transformer can be calculated by:
Correct answer: A. Option A
- A. Option A
- B. Option B
- C. Option C
- D. Option D
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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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More Electromagnetic Induction questions
It is possible to transmit AC power over long distances without much power loss by:
To improve the efficiency of a transformer:
Eddy currents are the induced currents which are setup:
The turn ratio of setup transformer is the voltage ratio and current ratio respectively will be:
The power loss in transformer takes place due to:
For an ideal transformer: