The armature core of the rotor bars of dc motors are laminated
A. to reduce hysteresis loss.
B. to reduce mechanical losses.
C. to reduce eddy current loss.
D. to provide better flux linkage.
Answer: C
Share your understanding of this question with the correct explanation.
The armature core of the rotor bars in DC motors is laminated to reduce eddy current losses. Laminating the core means that it is divided into thin insulated layers, which helps to minimize the formation of circulating currents (eddy currents) within the core material. By reducing eddy currents, the energy losses due to resistive heating are reduced, improving the overall efficiency of the motor.
Therefore, the correct answer is C.