A 3-phase bridge converter is given a three-phase supply in the phase sequence R-Y-B. Let the neutral to R phase voltage be Vm sin t. The first SCR (connected to R phase) is fired at an angle of 15 . What is the maximum value at the output terminals at this instant?

A 3-phase bridge converter is given a three-phase supply in the phase

1.	A 3-phase bridge converter is given a three-phase supply in the phase sequence R-Y-B. Let the neutral to R phase voltage be Vm sin t. The first SCR (connected to R phase) is fired at an angle of 15 . What is the maximum value at the output terminals at this instant?
A.	Vm/ 2
B.	Vm
C.	1.5 Vm
D.	3 Vm
Answer» D. 3 Vm