Engineering Materials in EE The permeability of iron can be increased by purifying it. reducing carbon percentage. alloying with cobalt. increasing carbon percentage. purifying it. reducing carbon percentage. alloying with cobalt. increasing carbon percentage. 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 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. They have fixed value of μr. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE A degaussing is the process of demagnetising metallic parts. remagnetising metallic parts. removing gases from materials. removal of magnetic impurities. demagnetising metallic parts. remagnetising metallic parts. removing gases from materials. removal of magnetic impurities. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE When a ferromagnetic substance is magnetized small changes in dimensions occur. Such a phenomenon is known as magnetic expansion. magnetostriction. magneto-calorisation. magnetic hysteresis. magnetic expansion. magnetostriction. magneto-calorisation. magnetic hysteresis. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE Which of the following is the ferroelectric material ? Barium titanate. Rochelle salt. Potassium dihydrogen phosphate. All of these Barium titanate. Rochelle salt. Potassium dihydrogen phosphate. All of these ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE ________ is the most detrimental impurity in the magnetic materials Sulphur. Nitrogen. Carbon. Oxygen. Sulphur. Nitrogen. Carbon. Oxygen. ANSWER DOWNLOAD EXAMIANS APP
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