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The voltages, VBR ,Vph are related in star connected system is?

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The voltages, VBR ,Vph are related in star connected system is?

(a) VBR = 3Vph

(b) VBR = 3√3Vph

(c) VBR = √3Vph

(d) VBR = Vph

The question was asked in examination.

My enquiry is from Voltage, Current and Power in a Star Connected System topic in section Polyphase Circuits of Network Theory

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Correct option is (c) VBR = √3Vph

Easiest explanation: The voltages, VBR, Vph in star connected system are related as VBR = √3Vph. The line voltage VYB is equal to the phasor difference of VBN and VRN and is equal to √3Vph.

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