The permeability of permalloy is

A. Very much greater than permeability of air

B. Slightly greater than permeability of air

C. Slightly less than permeability of air

D. Equal to the permeability of air

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  3. When the ferromagnetic substance is inserted in a current- carrying solenoida the magnetic field is
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  24. What is the usual value of leakage coefficient for electrical machines?
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  26. The potential at a point due to a charge is 15 V. If the distance is times, the potential at the point…
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