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The relation between the lengths of the phasors VRN and – VYN is?

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The relation between the lengths of the phasors VRN and – VYN is?

(a) |VRN| > – |VYN|

(b) |VRN| < – |VYN|

(c) |VRN| = – |VYN|

(d) |VRN| >= – |VYN|

This question was posed to me during an interview.

The doubt is from Voltage, Current and Power in a Star Connected System in chapter Polyphase Circuits of Network Theory

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The correct option is (c) |VRN| = – |VYN|

The explanation is: The voltage VRY is found by compounding VRN and VYN reversed. The relation between the lengths of the phasors VRN and – VYN is |VRN| = – |VYN|.

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