What is the value of the letter ‘a’ or ‘α’ which is commonly – McqOptions

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1.	What is the value of the letter ‘a’ or ‘α’ which is commonly used in symmetrical components?
A.	1 ∠ 90°
B.	1 ∠ 30°
C.	1 ∠ 120°
D.	1 ∠ -120°
Answer» D. 1 ∠ -120°

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