Q. Hard steel is suitable for making permanent magnets because (Solved)
1. it has good residual magnetism
2. its hysteresis loop has large area
3. its mechanical strength is high
4. its mechanical strength is low
- a. it has good residual magnetism
1. it has good residual magnetism
2. its hysteresis loop has large area
3. its mechanical strength is high
4. its mechanical strength is low