Engineering Materials in EE The permeability of iron can be increased by reducing carbon percentage. purifying it. alloying with cobalt. increasing carbon percentage. reducing carbon percentage. purifying it. alloying with cobalt. increasing carbon percentage. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE Materials which lack permanent magnetic dipoles are called dia-magnetic. None of these semi-magnetic. ferro-magnectic. dia-magnetic. None of these semi-magnetic. ferro-magnectic. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE In electrical machines the material preferred for pole shoes of electromagnets is aluminium. pure iron. lead. copper. aluminium. pure iron. lead. copper. 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 magneto-calorisation. magnetostriction. magnetic hysteresis. magnetic expansion. magneto-calorisation. magnetostriction. magnetic hysteresis. magnetic expansion. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE Which of the following statements is not part of Daltons atomic theory? An atom contains a dense central nucleus. All matter is composed of atoms. Atoms can combine to form compounds. Atoms of different elements are quite different. An atom contains a dense central nucleus. All matter is composed of atoms. Atoms can combine to form compounds. Atoms of different elements are quite different. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE Which of the following is the example for piezo-electric material ? Lead zirconate titanate None of these Copper Potassium niobate Lead zirconate titanate None of these Copper Potassium niobate ANSWER DOWNLOAD EXAMIANS APP
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