Engineering Materials in EE When a ferromagnetic substance is magnetized small changes in dimensions occur. Such a phenomenon is known as magnetic expansion. magnetostriction. magnetic hysteresis. magneto-calorisation. magnetic expansion. magnetostriction. magnetic hysteresis. magneto-calorisation. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE In electrical machines the material preferred for pole shoes of electromagnets is lead. copper. pure iron. aluminium. lead. copper. pure iron. aluminium. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE What is the name of the fluorescent material that gives red colour fluorescence? Calcium silicate. Magnesium silicate. Zinc sulphide. Zinc silicate. Calcium silicate. Magnesium silicate. Zinc sulphide. Zinc silicate. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE In ferromagnetic materials one of the constituent is iron. the constituent is only iron. the atomic magnetic moments are antiparallel and unequal. the atomic magnetic moments are parallel. one of the constituent is iron. the constituent is only iron. the atomic magnetic moments are antiparallel and unequal. the atomic magnetic moments are parallel. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE The permanent magnets are made from which of following materials ? Diamagnetic. Soft iron. Ferromagnetic. Paramagnetic. Diamagnetic. Soft iron. Ferromagnetic. Paramagnetic. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE ________ is the most detrimental impurity in the magnetic materials Nitrogen. Carbon. Oxygen. Sulphur. Nitrogen. Carbon. Oxygen. Sulphur. ANSWER DOWNLOAD EXAMIANS APP
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