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(i) What is the meaning of the term 'fre...

(i) What is the meaning of the term 'frequency' of an alternating current?
(ii) Why is alternating current considered to be advantageous over direct current for long range transmission of electric energy?

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(i) The number of cycles completed by the AC in one second is called the frequency of AC.
(ii) The loss of electric energy is very low at very high voltage and as such transmission losses are minimised at very high voltage. At the receiving station, the high voltage can be stepped down to the desired value by using a transformer.
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