On which of the following factors the number of phases for which a rectifier should be designed depend ?

A. The voltage regulation of the rec¬tifier should be low

B. In the output circuit there should be no harmonics

C. The power factor of the system should be high

D. The rectifier supply transformer should be utilized to the best ad-vantage

E. all of the aboveCorrect Answer

Correct Option: E. all of the above

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