Magnetism and Electromagnetism Magnetising steel is normals difficult because it has high permeability it has low permeability it has high specific gravity it corrodes easily it has high permeability it has low permeability it has high specific gravity it corrodes easily ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism What is the magneto-motive force (mmf) of a wire with 8 turns carrying three amperes of current? 24 At 2.4 At 240 At 2,400 At 24 At 2.4 At 240 At 2,400 At ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Core of an electromagnet should have Low coercivity None of the listed here Both low coercivity and high susceptibility High susceptibility Low coercivity None of the listed here Both low coercivity and high susceptibility High susceptibility ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism For which of the following materials the saturation value is the highest? Diamagnetic materials Paramagnetic materials Ferrites Ferromagnetic materials Diamagnetic materials Paramagnetic materials Ferrites Ferromagnetic materials ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Substances which have permeability less than the permeability of free space are known as Bipolar Ferro magnetic material Paramagnetic material Diamagnetic material Bipolar Ferro magnetic material Paramagnetic material Diamagnetic material 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? 11 At/Wb 111 At/Wb 1 At/Wb 1111 At/Wb 11 At/Wb 111 At/Wb 1 At/Wb 1111 At/Wb ANSWER DOWNLOAD EXAMIANS APP
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