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A transformer cannot raise or lower the voltage of a D.C. supply because | |
A. | there is no need to change the D.C. voltage [Wrong Answer] |
B. | a D.C. circuit has more losses [Wrong Answer] |
C. | Faraday's laws of electromagnetic induction are not valid since the rate of change of flux is zero [Correct Answer] |
D. | none of the above [Wrong Answer] |