The efficiency of a transformer will be maximum when ........................? (A) copper losses = hysteresis losses (B) hysteresis losses = eddy current losses (C) eddy current losses = copper losses...

The efficiency of a transformer will be maximum when ........................?

(A) copper losses = hysteresis losses

(B) hysteresis losses = eddy current losses

(C) eddy current losses = copper losses

(D) copper losses = hysteresis losses plus eddy current losses

(E) None of the above.