The average load voltage of three-phase half -wave controlled circuit using thyristors is given by

\(\frac{{3\sqrt 6 }}{\pi }{E_m}\cos \alpha \)

\(\frac{{3\sqrt 6 }}{{2\pi }}{E_m}\cos \alpha \)

\(\frac{{3\sqrt 3 }}{\pi }{E_m}\cos \alpha \)

\(\frac{{3\sqrt 6 }}{\pi }{E_m}\sin \alpha \)

The average load voltage of three-phase half -wave controlled circuit

1.	The average load voltage of three-phase half -wave controlled circuit using thyristors is given by
A.	\(\frac{{3\sqrt 6 }}{{2\pi }}{E_m}\cos \alpha \)
B.	\(\frac{{3\sqrt 6 }}{\pi }{E_m}\cos \alpha \)
C.	\(\frac{{3\sqrt 3 }}{\pi }{E_m}\cos \alpha \)
D.	\(\frac{{3\sqrt 6 }}{\pi }{E_m}\sin \alpha \)
Answer» B. \(\frac{{3\sqrt 6 }}{\pi }{E_m}\cos \alpha \)