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 the same direction as current Normal to both current and magnetic field None of these In a direction anti parallel to magnetic field In the same direction as current Normal to both current and magnetic field None of these In a direction anti parallel to magnetic field ANSWER DOWNLOAD EXAMIANS APP
Materials and Components The merger of hole and free electron is called Covalent bonding Recombination Thermal energy Free electrons Covalent bonding Recombination Thermal energy Free electrons ANSWER DOWNLOAD EXAMIANS APP
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 phenomenon of dielectric hysteresis occurs with AC None of these Both AC and DC DC AC None of these Both AC and DC DC ANSWER DOWNLOAD EXAMIANS APP
Materials and Components Which inductor is used at high frequencies? Iron alloy cored Cast iron cored Sheet steel cored Ceramic cored Iron alloy cored Cast iron cored Sheet steel cored Ceramic cored 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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