I think I kind of understood it in terms of just a simple machine/motor which relies on mechanical output only. So, can we say that the 0 value we see on the sine wave is actually an instantaneous value?

I mean, I got that inertia does the work, but don't we need current (electron flow), so how is that the sine wave give us 0 rated current?

Alright, but I am confused about the 120 Hz part. And isn't the rated current still 0? (sorry if sounds stupid-ish)

I got a little confused about the motor and inertia explanation. Can we talk according say washing machine?

I mean, unless we keep polarity constant of an alternator, there is no way to supply a generator with DC.

I see thank you so much, and sorry I forgot about PV cells, I thought about machinery first. Then, if I supply a conductor with AC, and put it in a permenant magnet (not moving it though), would it still count as a change of flux due to AC? (sorry if this question sounds stupid)

If induced EMF is produced from a conductor moving or rotating in a magnetic field, then why does it matter if it is AC or DC that flows through that conductor?

But, isn't the rotation of a conductor with a current flow in a magnetic field what creates the induced emf?

I know this, but can't we supply the generator (without commutators or not) with DC (in such case, is it the exciter that we feed first) ? Cause, without a commutator, if I am not wrong, what we produce is AC, not DC, due to the periodic polarity change.

don't we produce AC first, and use commutators to keep the polarity constant?

What about fluorescent lamps?

Hey, I can't see it because it is on Imgur, it is banned here. :)

I try to learn intuitively, how's that going to help me I don't know. I have engineering textbooks at home including Chapman, not helpful at all. Thank you anyway.

Thank you! What is the relation between the induced voltage and magnetic field (their direction, magnitude and such), so that the induced voltage has the same wave shape as the magnetic field?

Can it be a magnet rotating on its own axis? I have no idea. I was searching about how we get sine wave of voltage with a generator, all got confusing, every source explains it differently, especially this one.