Engineering Materials in EE The permanent magnets are made from which of following materials ? Soft iron. Diamagnetic. Ferromagnetic. Paramagnetic. Soft iron. Diamagnetic. Ferromagnetic. Paramagnetic. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE Which of the following is the example for piezo-electric material ? Potassium niobate Lead zirconate titanate None of these Copper Potassium niobate Lead zirconate titanate None of these Copper ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE The dielectric strength of ferroelectric materials depends to a large extent on frequency of applied voltage. area of hysteresis loop for the material. presence of magnetic materials in the vicinity. intensity of electric field. frequency of applied voltage. area of hysteresis loop for the material. presence of magnetic materials in the vicinity. intensity of electric field. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE In Bohr’s model of atomic structure, the nucleus consists of protons. protons and neutrons. electrons. electrons and protons. protons. protons and neutrons. electrons. electrons and protons. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE The Bohr model of the atom All of these had some made-up rules without explanations. could not explain the line spectrum of atoms larger than hydrogen. explained the color lines in the hydrogen spectrum. All of these had some made-up rules without explanations. could not explain the line spectrum of atoms larger than hydrogen. explained the color lines in the hydrogen spectrum. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE In order to minimise loss due to hysteresis, the magnetic material should have high resistivity. high retentivity. large B-H loop area. low hysteresis coefficient. high resistivity. high retentivity. large B-H loop area. low hysteresis coefficient. ANSWER DOWNLOAD EXAMIANS APP
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