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 In a direction anti parallel to magnetic field None of these Normal to both current and magnetic field In the same direction as current In a direction anti parallel to magnetic field None of these ANSWER DOWNLOAD EXAMIANS APP
Materials and Components Which inductor is used at high frequencies? Sheet steel cored Ceramic cored Cast iron cored Iron alloy cored Sheet steel cored Ceramic cored Cast iron cored Iron alloy cored ANSWER DOWNLOAD EXAMIANS APP
Materials and Components A vacant electronic state moves in the same direction as would a positive charge carrier. True False True False ANSWER DOWNLOAD EXAMIANS APP
Materials and Components The elements which become superconducting at extremely low temperatures are Relatively poor conductors at room temperature Good conductors at room temperature Insulators at room temperature Ferromagnetic at room temperature Relatively poor conductors at room temperature Good conductors at room temperature Insulators at room temperature Ferromagnetic at room temperature ANSWER DOWNLOAD EXAMIANS APP
Materials and Components When a dielectric material is subjected to alternating field, the absorption of energy by the material from the field is given by the imaginary part of polarizability. False True False True ANSWER DOWNLOAD EXAMIANS APP
Materials and Components As the viscosity of a liquid increases, the relaxation time First decreases then increases Remains constant Increases Decreases First decreases then increases Remains constant Increases Decreases ANSWER DOWNLOAD EXAMIANS APP
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