Engineering Materials in EE Which of the following is the least desired property in magnetic materials for electrical engineering applications ? All of these High magnetic permeability. Large hysteresis loop. High electrical resistivity. All of these High magnetic permeability. Large hysteresis loop. High electrical resistivity. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE Which statement is not true of ferromagnetic materials. Energy loss is proportional to the area of hysteresis loop. They have fixed value of μr. They have large magnetic susceptibility. They lose their nonlinearly property above the Curie temperature. Energy loss is proportional to the area of hysteresis loop. They have fixed value of μr. They have large magnetic susceptibility. They lose their nonlinearly property above the Curie temperature. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE Positive magnetostriction exists when both are correct. dipoles are repel other. none of above. dipoles are attract each other. both are correct. dipoles are repel other. none of above. dipoles are attract each other. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE Two different isotopes of an element have different numbers of protons. numbers of electrons. numbers of neutrons. atomic number. numbers of protons. numbers of electrons. numbers of neutrons. atomic number. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE In order to minimise loss due to hysteresis, the magnetic material should have large B-H loop area. high resistivity. high retentivity. low hysteresis coefficient. large B-H loop area. high resistivity. high retentivity. low hysteresis coefficient. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE In electrical machines the material preferred for pole shoes of electromagnets is pure iron. lead. aluminium. copper. pure iron. lead. aluminium. copper. ANSWER DOWNLOAD EXAMIANS APP
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