Materials and Components Electrical contact materials used in switches, brushes, relay must possess High thermal conductivity and low melting point Low thermal conductivity and high melting point High thermal conductivity and high melting point Low thermal conductivity and low melting pointL High thermal conductivity and low melting point Low thermal conductivity and high melting point High thermal conductivity and high melting point Low thermal conductivity and low melting pointL ANSWER DOWNLOAD EXAMIANS APP
Materials and Components With increase in temperature, the electrical conductivity would Decrease in metals but increase in intrinsic semiconductor Decrease in metals as well as in intrinsic semiconductor Increase in metals but decrease in intrinsic semiconductor Increase in metals as well as in intrinsic semiconductor Decrease in metals but increase in intrinsic semiconductor Decrease in metals as well as in intrinsic semiconductor Increase in metals but decrease in intrinsic semiconductor Increase in metals as well as in intrinsic semiconductor ANSWER DOWNLOAD EXAMIANS APP
Materials and Components The fact that domains exhibits spontaneous magnetisation is Curie-Weiss law Second hypothesis is of Weiss Boltzmann’s statistics First hypothesis is of Curie Curie-Weiss law Second hypothesis is of Weiss Boltzmann’s statistics First hypothesis is of Curie ANSWER DOWNLOAD EXAMIANS APP
Materials and Components As the atoms of rare gases become larger, electronic polarizability Decreases May increase or decrease Remains the same Increases Decreases May increase or decrease Remains the same Increases ANSWER DOWNLOAD EXAMIANS APP
Materials and Components On the basis of the type of chemical bonds, solids may be classified into Ionic crystals Ionic crystals, valence crystals, metal and vander wall crystals Ionic crystal, valence crystals and metals Ionic and valence crystals Ionic crystals Ionic crystals, valence crystals, metal and vander wall crystals Ionic crystal, valence crystals and metals Ionic and valence crystals ANSWER DOWNLOAD EXAMIANS APP
Materials and Components Debye temperature of metals is About 2 K About 200 K About 600 K About 10 K About 2 K About 200 K About 600 K About 10 K ANSWER DOWNLOAD EXAMIANS APP
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