400 V rated 5 SCRs are connected in series. The operation voltage of the string is 500. Calculate the string efficiency.

400 V rated 5 SCRs are connected in series. The operation voltage of t

1.	400 V rated 5 SCRs are connected in series. The operation voltage of the string is 500. Calculate the string efficiency.
A.	25 %
B.	40 %
C.	38 %
D.	35 %
Answer» B. 40 %