Engineering Materials in EE In electrical machines the material preferred for pole shoes of electromagnets is copper. aluminium. pure iron. lead. copper. aluminium. pure iron. lead. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE The intensity of magnetization, M, of a ferro magnetic solid is independent of temperature. depends on method of heating. decreases with increasing temperature. increases with increasing temperature. is independent of temperature. depends on method of heating. decreases with increasing temperature. increases with increasing temperature. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE Susceptibility is negative for diamagnetic substances. non magnetic substances. ferromagnetic substances. none of above. diamagnetic substances. non magnetic substances. ferromagnetic substances. none of above. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE The number of rings in the Bohr model of any element is determined by what? Atomic mass. Column number on periodic table. Atomic number. Row number on periodic table. Atomic mass. Column number on periodic table. Atomic number. Row number on periodic table. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE Which statement is not true of ferromagnetic materials. They have large magnetic susceptibility. Energy loss is proportional to the area of hysteresis loop. They lose their nonlinearly property above the Curie temperature. They have fixed value of μr. They have large magnetic susceptibility. Energy loss is proportional to the area of hysteresis loop. They lose their nonlinearly property above the Curie temperature. They have fixed value of μr. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE It is difficult to magnetize steel because it has high permittivity. high permeability. low permeability. low susceptibility. high permittivity. high permeability. low permeability. low susceptibility. ANSWER DOWNLOAD EXAMIANS APP
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