The average load voltage of three-phase half -wave controlled circuit using thyristors is given by
1
\(\frac{{3\sqrt 6 }}{{2\pi }}{E_m}\cos \alpha \)
2
\(\frac{{3\sqrt 6 }}{\pi }{E_m}\cos \alpha \)
3
\(\frac{{3\sqrt 3 }}{\pi }{E_m}\cos \alpha \)
4
\(\frac{{3\sqrt 6 }}{\pi }{E_m}\sin \alpha \)
5
Question Not Attempted