Electric Circuits
A balanced three Phase Y-connected load has one phase voltage VB = 277∠45o V. The phase sequence is RYB. The line to line voltage VRY is

 339∠- 45o V.
 339∠45o V.
 480∠ - 45o V.
 480∠45o V.

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Electric Circuits
When we use super node technique

 current source branch is common for two meshes.
 ideal voltage source is connected between non reference node and reference.
All of these
 ideal voltage source is connected between two non reference nodes.

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