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1. In large bulky materials, the uni-axial anisotropy can be induced by
2. Hysteresis loss varies with maximum flux density (B) as
3. Hysteresis loss varies with frequency (f) as
4. Which of the following can be worked with higher flux densities ?
5. By adding silicon to ferromagnetic , materials
6. Which of the following gives materials in order of increasing values of permeability ?
7. Diamagnetic : Ferromagnetic ::
8. Diamagnetic: Copper:: Ferromagnetic:
9. All of the following are ferromagnetic materials EXCEPT
10. For simplex wave and lap windings, the back pitch yb and front pitch yf are as follows:
Answer: Option D
any of the above
Answer: Option B
Answer: Option A
Answer: Option C
Cold rolled silicon steel
Answer: Option C
electrical resistivity decreases and magnetic permeability increases