Value of letter ‘a’ or ‘α’ is 1 ∠ 120°

Q.  What is the value of the letter ‘a’ or ‘α’ which is commonly used in symmetrical components?
- Published on 12 Oct 15

a. 1 ∠ 90°
b. 1 ∠ 30°
c. 1 ∠ 120°
d. 1 ∠ -120°

ANSWER: 1 ∠ 120°

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