Magnetism and Electromagnetism Magnetising steel is normals difficult because it has high specific gravity it corrodes easily it has low permeability it has high permeability it has high specific gravity it corrodes easily it has low permeability it has high permeability ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism A square cross-sectional magnet has a pole strength of 1 x 10 Wb and cross sectional area of 20 mm x 20 mm. What is the strength at a distance of 100 mm from the unit pole in air ? 633.8 N/Wb 63380 N/Wb 63.38 N/Wb 6338 N/Wb 633.8 N/Wb 63380 N/Wb 63.38 N/Wb 6338 N/Wb ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism For which of the following materials the saturation value is the highest? Paramagnetic materials Diamagnetic materials Ferrites Ferromagnetic materials Paramagnetic materials Diamagnetic materials Ferrites Ferromagnetic materials ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The commonly used material for shielding or screening magnetism is Brass Aluminium Copper Soft iron Brass Aluminium Copper Soft iron ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Substances which have permeability less than the permeability of free space are known as Paramagnetic material Diamagnetic material Ferro magnetic material Bipolar Paramagnetic material Diamagnetic material Ferro magnetic material Bipolar ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism What is the reluctance of a material that has a length of 0.07 m, a cross-sectional area of 0.014 m2, and a permeability of 4,500 Wb/At × m? 1 At/Wb 111 At/Wb 1111 At/Wb 11 At/Wb 1 At/Wb 111 At/Wb 1111 At/Wb 11 At/Wb ANSWER DOWNLOAD EXAMIANS APP
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