Question

What are 3rd, 5th and 7th harmonics?

Answer 1

1. A harmonic is a wave or signal whose frequency is a multiple of the frequency of the same reference signal or wave by an integral (whole number).
2. The lowest frequency of a periodic waveform is known as the fundamental frequency, also known as just the fundamental.
3. $\mathrm{The}3\mathrm{rd}\mathrm{harmonic}=3\times \mathrm{fundamental}\mathrm{frequency}$
4. $\mathrm{The}5\mathrm{th}\mathrm{harmonic}=5\times \mathrm{fundamental}\mathrm{frequency}$
5. $\mathrm{The}7\mathrm{th}\mathrm{harmonic}=7\times \mathrm{fundamental}\mathrm{frequency}$
6. The $3^{\mathrm{rd}},5^{\mathrm{th}}\mathrm{and}{7}^{\mathrm{th}}$harmonics are the odd harmonics.
7. A signal can have an infinite number of harmonics.