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The relation between VRY, Vph in a star connected system is?

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The relation between VRY, Vph in a star connected system is?

(a) VRY = Vph

(b) VRY = √3Vph

(c) VRY = 3√3Vph

(d) VRY = 3Vph

I had been asked this question in an interview for internship.

The origin of the question is Voltage, Current and Power in a Star Connected System topic in section Polyphase Circuits of Network Theory

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The correct option is (b) VRY = √3Vph

To explain I would say: The two phasors VYN and VBN are equal in length and are 60⁰apart. The relation between VRY, Vph in a star connected system is VRY = √3Vph.

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