Materials and Components The materials which become polarized on the application of mechanical stress are called piezoelectric. False True False True ANSWER DOWNLOAD EXAMIANS APP
Materials and Components The fact that domains exhibits spontaneous magnetisation is Second hypothesis is of Weiss Boltzmann’s statistics Curie-Weiss law First hypothesis is of Curie Second hypothesis is of Weiss Boltzmann’s statistics Curie-Weiss law First hypothesis is of Curie ANSWER DOWNLOAD EXAMIANS APP
Materials and Components Hall effect is observed in a specimen (metal or semi conductor) when it is carrying current and is placed in a magnetic field. The resultant electric field inside the specimen is Normal to both current and magnetic field In the same direction as current None of these In a direction anti parallel to magnetic field Normal to both current and magnetic field In the same direction as current None of these In a direction anti parallel to magnetic field ANSWER DOWNLOAD EXAMIANS APP
Materials and Components Which inductor is used at high frequencies? Cast iron cored Ceramic cored Sheet steel cored Iron alloy cored Cast iron cored Ceramic cored Sheet steel cored Iron alloy cored ANSWER DOWNLOAD EXAMIANS APP
Materials and Components In a metal, the valence electrons Are not shared Are shared by all atoms Either B or C Are shared only between neighbouring atoms Are not shared Are shared by all atoms Either B or C Are shared only between neighbouring atoms ANSWER DOWNLOAD EXAMIANS APP
Materials and Components Electrical contact materials used in switches, brushes, relay must possess High thermal conductivity and high melting point Low thermal conductivity and high melting point High thermal conductivity and low melting point Low thermal conductivity and low melting pointL High thermal conductivity and high melting point Low thermal conductivity and high melting point High thermal conductivity and low melting point Low thermal conductivity and low melting pointL ANSWER DOWNLOAD EXAMIANS APP
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