Engineering Materials in EE Which statement is not true of ferromagnetic materials. They have fixed value of μr. They lose their nonlinearly property above the Curie temperature. They have large magnetic susceptibility. Energy loss is proportional to the area of hysteresis loop. They have fixed value of μr. They lose their nonlinearly property above the Curie temperature. They have large magnetic susceptibility. Energy loss is proportional to the area of hysteresis loop. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE Materials which lack permanent magnetic dipoles are called dia-magnetic. ferro-magnectic. None of these semi-magnetic. dia-magnetic. ferro-magnectic. None of these semi-magnetic. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE In order to minimise loss due to hysteresis, the magnetic material should have high retentivity. large B-H loop area. low hysteresis coefficient. high resistivity. high retentivity. large B-H loop area. low hysteresis coefficient. high resistivity. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE Permanent magnets are used in all of above. generators. motors. loud speakers. all of above. generators. motors. loud speakers. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE Cryogenics is a branch of science dealing with which of the following? Low temperature. Crystal growth. High temperature. Friction and wear. Low temperature. Crystal growth. High temperature. Friction and wear. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE ALNICO is an alloy of aluminium, nickel. aluminium, nickel, iron and cobalt. iron, cobalt, nickel. iron, aluminium. aluminium, nickel. aluminium, nickel, iron and cobalt. iron, cobalt, nickel. iron, aluminium. ANSWER DOWNLOAD EXAMIANS APP
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