How about Manual crank -> Ratation ng Generator (energy is created) -> once energy is created -> switch to electric motor na naka shaft sa Generator (para makapag rotate ulit yung turbine with lesser power consumption ang Electric motor sa nagegenerate na electricity ng generator). Ayan, may Circulating generator ka na, hehehe
ideally, that's true, but, in reality, it's not as simple as it looks like.
marami ng nag-try, some succeeded, but mostly failed dahil may ibang factor na hindi na-consider (to sustain.)
i remember back in '85 (college years
), 2 of my batchmates in high school were talking about that same idea as mine (and yours.) pero di ko alam kung nagawa ba nila dahil wala na akong narinig mula nun.
one thing for sure: (the idea,) it works...