Network Analysis and Synthesis - ECE Questions and Answers

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If operator 'a' = 1 ∠120° then (1 + a²) =

3 ∠30°

3 ∠ - 30°

3 ∠60°

Answer : Option A

Explanation :

1 - a² = 1 + 0.5 + j 0.866 = 3∠30°.

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