Ed = Vt-(Ja Ra)    Ia=IL-Ish.   

%SR = (1500-1480)÷1480×100%

%y = Pin - (copper+stray)÷Pin × 100 %

Torgue

(Ta) = (9.55 × Ed × Ia)÷1480

(Ts) = (9.55 × Pout)÷1480

1500 = (n)NL
1480 = (n)FL