Engineering Materials in EE Which statement is not true of ferromagnetic materials. They have large magnetic susceptibility. They have fixed value of μr. They lose their nonlinearly property above the Curie temperature. Energy loss is proportional to the area of hysteresis loop. They have large magnetic susceptibility. They have fixed value of μr. They lose their nonlinearly property above the Curie temperature. Energy loss is proportional to the area of hysteresis loop. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE The permeability of iron can be increased by purifying it. increasing carbon percentage. alloying with cobalt. reducing carbon percentage. purifying it. increasing carbon percentage. alloying with cobalt. reducing carbon percentage. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE Why diamond is very hard ? Because of covalent solid Because of large cohesive energy None of these Because of high melting point Because of covalent solid Because of large cohesive energy None of these Because of high melting point ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE A ferrite core has low eddy current loss than an iron core because ferrites have hig hysteresis. ferrites have low permeability. / >ferrites have high resistance. ferrites are magnetic. ferrites have hig hysteresis. ferrites have low permeability. / >ferrites have high resistance. ferrites are magnetic. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE According to the Bohr model, an electron gains or losses energy only by moving faster or slower in an allowed orbit. jumping from one atom to another atom. jumping from one allowed orbit to another. being completely removed from an atom. moving faster or slower in an allowed orbit. jumping from one atom to another atom. jumping from one allowed orbit to another. being completely removed from an atom. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE ________ is the most detrimental impurity in the magnetic materials Sulphur. Nitrogen. Oxygen. Carbon. Sulphur. Nitrogen. Oxygen. Carbon. ANSWER DOWNLOAD EXAMIANS APP
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