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What is the higher order harmonics of order 5 of a wave form with fundamental frequency of 50Hz?

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What is the higher order harmonics of order 5 of a wave form with fundamental frequency of 50Hz?

(a) 50Hz

(b) 150Hz

(c) 250Hz

(d) 100Hz

The question was posed to me by my school teacher while I was bunking the class.

The query is from Higher-Order Harmonic Distortion topic in division Large Signal Amplifiers of Electronic Devices & Circuits

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Right option is (c) 250Hz

The explanation: The harmonics of a wave are the integer multiples of the fundamental frequency. Hence, the fifth harmonics of a wave with fundamental frequency 50Hz is 250Hz.

Fifth harmonics = 5 × fundamental frequency = 5 × 50Hz = 250Hz.

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