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Electric circuits miscellaneous

  1. In the given network V1 =100∠0°V, V2 =100∠120°V, V3 = 100∠ +120° V. The phasor current i (in Ampere) is

    1. 173.2∠ – 60°
    2. 173.2∠ – 120°
    3. 100.0∠ – 60°
    4. 100.0∠ – 120°
Correct Option: A

From the given network,

-i =
(V1 - V2)
+
(V2 - V3)
-jj

-i =
100 ∠0° - 100 ∠120°
+
100 ∠- 120° - 100 ∠120°
1 ∠- 90°1 ∠ 90°

i = 173.2 ∠- 60°



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