The coil span of an alternator is 160 degrees , which of the following harmonic is absent Questions and answers section › Category: EEE › The coil span of an alternator is 160 degrees , which of the following harmonic is absent 2 Vote Up Vote Down Karthik asked 5 years ago The coil span of an alternator is 160 degrees , which of the following harmonic is absent 1 Answers 1 Vote Up Vote Down Best Answer Ziyad answered 5 years ago 9 th harmonic