Im currently taking a electrical class and my professor said we need to explain why something works in a particular way in the electrical field. I gave him 3 topics and he liked the idea of me explaining why the NTTs make the sounds since hes never really met any one who would be willing to do this (Go figure) So I was wondering if some one knows where I can find an in depth explainiation of what happens when your gearing up the train and why the sound comes in, how power is tranferred and what not. Any thing would be helpful, Thank you!
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