Silicon in steel__________________?
Correct answer: A. All 'A', 'B' & 'C'
- A. All 'A', 'B' & 'C'
- B. Increases its electrical resistivity and decreases the hysteresis loss
- C. Is present upto 5% & 4% respectively when used in transformers & motor armatures
- D. Makes it usable in almost all magnetic circuits where alternating current is used
Explanation
Silicon steel has higher electrical resistivity, which reduces eddy-current losses, and lower hysteresis loss; these properties make it valuable in AC magnetic circuits. Silicon contents of roughly 4 to 5% are used in transformer and electrical-steel applications, so all three statements are intended to apply.
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