What are the phase voltages when T6, T1 and T2 are conducting? Consider a star connected R load.

What are the phase voltages when T6, T1 and T2 are conducting? Consider a star connected R load. Correct Answer VRN = VBN = – Vs/3, VYN = 2Vs/3

When 6, 1 and 2 are conducting and the others are off. The conducting SCRs can be represented as closed switches. The load terminals Y and B are connected to the negative bus but the terminal R is connected to the positive bus. Supply voltage is Vs. VYN = VBN = -Vs/3. VRN = 2Vs/3. It should be noted that at any time, the summation of these phase voltages must be zero.
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