Materials and Components The materials which become polarized on the application of mechanical stress are called piezoelectric. True False True False 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 low melting pointL Low thermal conductivity and high melting point High thermal conductivity and low melting point High thermal conductivity and high melting point Low thermal conductivity and low melting pointL Low thermal conductivity and high melting point High thermal conductivity and low melting point ANSWER DOWNLOAD EXAMIANS APP
Materials and Components The fact that domains exhibits spontaneous magnetisation is Second hypothesis is of Weiss Curie-Weiss law First hypothesis is of Curie Boltzmann’s statistics Second hypothesis is of Weiss Curie-Weiss law First hypothesis is of Curie Boltzmann’s statistics ANSWER DOWNLOAD EXAMIANS APP
Materials and Components Nickel is a non-magnetic material. False True False True 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 In a direction anti parallel to magnetic field Normal to both current and magnetic field None of these In the same direction as current In a direction anti parallel to magnetic field Normal to both current and magnetic field None of these In the same direction as current ANSWER DOWNLOAD EXAMIANS APP
Materials and Components Spontaneous magnetisation is characteristic of ferromagnetic materials. True False True False ANSWER DOWNLOAD EXAMIANS APP
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