You may notice that when you are near an electrical transformer station, you hear a low frequency hum coming from the transformers. This is due to the 60 Hz AC electric current flowing the coils and around the core of the transformer. However, it turns out that the actual main frequency of the sound heard by the human ear is at 120 Hz. Using your knowledge of fundamental and harmonic overtones, present a possible explanation for this effect.
In a transformer, currents & voltages makes the harmonics by load having a non-linear characteristics. This leads to the generation of non-sinusoidal waveforms. The operational ranges of these current and voltage waves are inthe form of frequencies which will be the multiples of the fundamental frequency, which is here in this case is f = 60 Hz . That is, the fundamental frequency is at 60 hertz, the 2nd harmonic will heard with a frequency, f' = 2 X 60 = 120 Hz, which we will be able to hear by us through the ears
You may notice that when you are near an electrical transformer station, you hear a low...
You may notice that when you are near an electrical transformer station, you hear a low frequency hum coming from the transformers. This is due to the 60 Hz AC electric current flowing the coils and around the core of the transformer. However, it turns out that the actual main frequency of the sound heard by the human ear is at 120 Hz. Using your knowledge of fundamental and harmonic overtones, present a possible explanation for this effect.