Engineering Materials in EE Permanent magnets are used in loud speakers. motors. all of above. generators. loud speakers. motors. all of above. generators. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE Temporary magnets are used in which of the following ? All of these. Hoist. Generators. Motors. All of these. Hoist. Generators. Motors. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE Indicate which of following material does not retain magnetism permanently none of above. soft iron. hardness steel. stainless steel. none of above. soft iron. hardness steel. stainless steel. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE The permeability of iron can be increased by increasing carbon percentage. reducing carbon percentage. alloying with cobalt. purifying it. increasing carbon percentage. reducing carbon percentage. alloying with cobalt. purifying it. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE In ferromagnetic materials the atomic magnetic moments are antiparallel and unequal. one of the constituent is iron. the atomic magnetic moments are parallel. the constituent is only iron. the atomic magnetic moments are antiparallel and unequal. one of the constituent is iron. the atomic magnetic moments are parallel. the constituent is only iron. 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 retentivity. high resistivity. low hysteresis coefficient. large B-H loop area. high retentivity. high resistivity. low hysteresis coefficient. ANSWER DOWNLOAD EXAMIANS APP
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