Initial voltage at PQ buses to solve load flow problem with NR method

Q.  Initially what will be the voltage at all the PQ buses for solving the load flow problem using NR method?
- Published on 19 Oct 15

a. Vi = 1 ∠ 90°
b. Vi = 1 ∠ 0°
c. Vi = 1 ∠ 180°
d. Vi = 1 ∠ 45°

ANSWER: Vi = 1 ∠ 0°

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