Engineering Materials in EE In order to minimise loss due to hysteresis, the magnetic material should have high retentivity. large B-H loop area. high resistivity. low hysteresis coefficient. high retentivity. large B-H loop area. high resistivity. low hysteresis coefficient. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE The dielectric strength of ferroelectric materials depends to a large extent on presence of magnetic materials in the vicinity. intensity of electric field. area of hysteresis loop for the material. frequency of applied voltage. presence of magnetic materials in the vicinity. intensity of electric field. area of hysteresis loop for the material. frequency of applied voltage. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE Which of the following is the example for piezo-electric material ? None of these Lead zirconate titanate Potassium niobate Copper None of these Lead zirconate titanate Potassium niobate Copper 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. High magnetic permeability. Large hysteresis loop. All of these High electrical resistivity. High magnetic permeability. Large hysteresis loop. All of these ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE The core of a transformer for microwave frequency should be made of ferrites. silicon carbide. silicon. iron. ferrites. silicon carbide. silicon. iron. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE Which of the following gives materials in order of decreasing values of permeability? Pure iron, silicon iron, aluminium, bismuth. Permalloy, nickel, air, water. Silver, copper, aluminium, iron. Cobalt, nickel, aluminium, iron. Pure iron, silicon iron, aluminium, bismuth. Permalloy, nickel, air, water. Silver, copper, aluminium, iron. Cobalt, nickel, aluminium, iron. ANSWER DOWNLOAD EXAMIANS APP
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