Engineering Materials in EE In electrical machines the material preferred for pole shoes of electromagnets is copper. pure iron. lead. aluminium. copper. pure iron. lead. aluminium. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE A ferrite core has low eddy current loss than an iron core because ferrites are magnetic. ferrites have hig hysteresis. ferrites have low permeability. / >ferrites have high resistance. ferrites are magnetic. ferrites have hig hysteresis. ferrites have low permeability. / >ferrites have high resistance. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE Materials having a high dielectric constant, which is non-linear, are known as super die-electrics. hard die-electrics. elastomers. ferroelectric materials. super die-electrics. hard die-electrics. elastomers. ferroelectric materials. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE Permittivity of free space is equal to 8.854 × 10 - 10 F / m. 8.854 × 10 - 12 F / m. 8.854 × 10 - 11 F / m. 8.854 × 10 - 13 F / m. 8.854 × 10 - 10 F / m. 8.854 × 10 - 12 F / m. 8.854 × 10 - 11 F / m. 8.854 × 10 - 13 F / m. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE Which of the following gives materials in order of decreasing values of permeability? 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. Pure iron, silicon iron, aluminium, bismuth. Permalloy, nickel, air, water. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE Positive magnetostriction exists when none of above. dipoles are attract each other. both are correct. dipoles are repel other. none of above. dipoles are attract each other. both are correct. dipoles are repel other. ANSWER DOWNLOAD EXAMIANS APP
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