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Question

The line current of a three-phase four wire system are square wave with amplitude of 100 A. The three currents are phase shifted by 120o with respect to each other. The rms value of neutral current is

A
300 A
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B
0 A
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C
100 A
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D
1003A
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Solution

The correct option is C 100 A

IN=Ia+Ib+Ic

(IN)rms=100A

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