Third lowest order harmonic present in 3-Φ fully controlled rectifier is __________(a) 11^th(b) 17^th(c) 13^th(d) 22^ndI had been asked this question in final exam.Origin of the question is Solid-State Devices topic in portion Introduction to Solid-State Devices of Electric Drives

Third lowest order harmonic present in 3-Φ fully controlled rectifier

1.	Third lowest order harmonic present in 3-Φ fully controlled rectifier is __________(a) 11^th(b) 17^th(c) 13^th(d) 22^ndI had been asked this question in final exam.Origin of the question is Solid-State Devices topic in portion Introduction to Solid-State Devices of Electric Drives
Answer» RIGHT ANSWER is (a) 11^th Easy explanation: Only 6k±1 order harmonics are present in 3-Φ fully controlled RECTIFIER. The lowest order harmonic is 11^th harmonic for k=2. Third order harmonics are ABSENT in 3-Φ fully controlled rectifier.

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