Engineering Materials in EE Temporary magnets are used in which of the following ? Hoist. Generators. All of these. Motors. Hoist. Generators. All of these. Motors. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE The permanent magnets are made from which of following materials ? Ferromagnetic. Paramagnetic. Diamagnetic. Soft iron. Ferromagnetic. Paramagnetic. Diamagnetic. Soft iron. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE What are insulating materials that can tolerate maximum temperature? Glass. All of these. Mica. Porcelain. Glass. All of these. Mica. Porcelain. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE Which statement is not true of ferromagnetic materials. They have fixed value of μr. Energy loss is proportional to the area of hysteresis loop. They have large magnetic susceptibility. They lose their nonlinearly property above the Curie temperature. They have fixed value of μr. Energy loss is proportional to the area of hysteresis loop. They have large magnetic susceptibility. They lose their nonlinearly property above the Curie temperature. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE Which of the following is the ferroelectric material ? All of these Rochelle salt. Potassium dihydrogen phosphate. Barium titanate. All of these Rochelle salt. Potassium dihydrogen phosphate. Barium titanate. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE A ferrite core has low eddy current loss than an iron core because ferrites are magnetic. ferrites have hig hysteresis. / >ferrites have high resistance. ferrites have low permeability. ferrites are magnetic. ferrites have hig hysteresis. / >ferrites have high resistance. ferrites have low permeability. ANSWER DOWNLOAD EXAMIANS APP
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