Straight silicon steel (containing Si from 0.5 to 5%) because of their low hysterisis loss and high magnetic permeability are used for electrical appliances. Which of the following electrical appliances made of silicon steel contains maximum percentage of silicon (about 4%)?

• A. Induction motors
• B. Generators and small motors
• C. Armature of small motors/generators
• D. High frequency transformers

Answer: (D)