Answer Posted / pradhyumn

In a 3 phase supply,at any instant one of the phase act as
a returning path for the two phase in a same way as neutral
is used in single phase so 3 phase is 440V and not 660V.

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Hi, Next week Iam appearing RRB exam for section engineer. So help me to get modal question papers for this position. Iam very thankful to you. Whether question will be fully techanical format or general form. Please give me a details regarding this exam.

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