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MAGNETISM AND ELECTROMAGNETISM
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MOTION
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A transformer
Transformers either increase or decrease AC voltage. A. State the principle of a transformer. B. Explain with the help of a labelled diagram the working of a transformer C. Explain briefly any three energy losses in a transformer.
A transformer transforms the ……......... and current levels of the generated power.
A transformer has an efficiency of 80% and works at 100 V and 4 kW. The secondary voltage is 240 V. Calculate the current in the primary and secondary.
Transformer is used to
Transformers are used
The core of a transformer is laminated to reduce.
Explain the use of transformer in long distance transmission of electric power .
A transformer cannot work on D.C. Why?
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