If a motor was in a 100% efficient circuit...?

Since were talking the perfect storm here there would be 0 regenerated current as the motor would never fall from the perfect load at the perfect rpm therefore never having to apply a little extra (EMF) to keep it rolling...When you get that all worked out call me i know a steel mill that wil sure want to talk to you ,,,Speaking of steel mills there are several places where the back emf actually powers the brake and until an scr open its gate to speed up the conveyor the brake slows it down and so forth and so on...brake off brake on ...Regenerative braking has been around for a while but lots of companies go to really fancy scr dc drives to make the motor respond the same way...Well have a good one from the E...