1.

For a three-phase, half-wave AC to DC converter, VDC is given by

A. \(\frac{{3\sqrt 3 {V_m}}}{{2\pi }}\cos \alpha \)
B. \(\frac{{3\sqrt 3 {V_m}}}{\pi }\cos \alpha\)
C. \(\frac{{{V_m}}}{{2\pi }}\left( {1 + \cos \alpha } \right)\)
D. \(\frac{{2{V_m}}}{\pi }\cos \alpha\)
Answer» B. \(\frac{{3\sqrt 3 {V_m}}}{\pi }\cos \alpha\)


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