Engineering Materials in EE In Bohr’s model of atomic structure, the nucleus consists of electrons and protons. protons. protons and neutrons. electrons. electrons and protons. protons. protons and neutrons. electrons. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE In electrical machines the material preferred for pole shoes of electromagnets is pure iron. lead. copper. aluminium. pure iron. lead. copper. aluminium. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE Materials having a high dielectric constant, which is non-linear, are known as ferroelectric materials. super die-electrics. elastomers. hard die-electrics. ferroelectric materials. super die-electrics. elastomers. hard die-electrics. 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 hysteresis. magnetic expansion. magnetostriction. magneto-calorisation. magnetic hysteresis. magnetic expansion. magnetostriction. magneto-calorisation. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE Which of the following is the least desired property in magnetic materials for electrical engineering applications ? High electrical resistivity. Large hysteresis loop. All of these High magnetic permeability. High electrical resistivity. Large hysteresis loop. All of these High magnetic permeability. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE Materials which lack permanent magnetic dipoles are called semi-magnetic. None of these dia-magnetic. ferro-magnectic. semi-magnetic. None of these dia-magnetic. ferro-magnectic. ANSWER DOWNLOAD EXAMIANS APP
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