Materials and Components In a metal, the valence electrons Either B or C Are shared by all atoms Are shared only between neighbouring atoms Are not shared Either B or C Are shared by all atoms Are shared only between neighbouring atoms Are not shared ANSWER DOWNLOAD EXAMIANS APP
Materials and Components Electrical contact materials used in switches, brushes, relay must possess 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 High thermal conductivity and low melting point ANSWER DOWNLOAD EXAMIANS APP
Materials and Components Spontaneous magnetisation is characteristic of ferromagnetic materials. False True False True ANSWER DOWNLOAD EXAMIANS APP
Materials and Components The fact that domains exhibits spontaneous magnetisation is First hypothesis is of Curie 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 ANSWER DOWNLOAD EXAMIANS APP
Materials and Components The rule that resistivity of conductors can be separated into two parts viz. temperature independent and temperature dependent is known as Curie rule Matthiessen’s rule Debye rule Onne’s rule Curie rule Matthiessen’s rule Debye rule Onne’s rule ANSWER DOWNLOAD EXAMIANS APP
Materials and Components Debye temperature of metals is About 200 K About 600 K About 2 K About 10 K About 200 K About 600 K About 2 K About 10 K ANSWER DOWNLOAD EXAMIANS APP
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