Correct option is B
Magnetic losses in electrical machines and transformers are mainly composed of two types: hysteresis loss and eddy current loss. Eddy current loss occurs when the changing magnetic field induces circulating currents (eddy currents) within the conductive core material. These currents generate heat and result in energy loss.
Windage loss: Caused by air friction as the machine's rotor moves, not related to magnetic losses.
Copper loss: Caused by the resistance in the winding conductors (I²R losses), not related to magnetic losses.
Friction loss: Due to mechanical friction in moving parts, not related to magnetic losses.
