Materials and Components The elements which become superconducting at extremely low temperatures are Insulators at room temperature Good conductors at room temperature Relatively poor conductors at room temperature Ferromagnetic at room temperature Insulators at room temperature Good conductors at room temperature Relatively poor conductors at room temperature Ferromagnetic at room temperature ANSWER DOWNLOAD EXAMIANS APP
Materials and Components The number of protons in a silicon atom are 8 12 14 4 8 12 14 4 ANSWER DOWNLOAD EXAMIANS APP
Materials and Components Which inductor is used at high frequencies? Cast iron cored Iron alloy cored Ceramic cored Sheet steel cored Cast iron cored Iron alloy cored Ceramic cored Sheet steel cored ANSWER DOWNLOAD EXAMIANS APP
Materials and Components The phenomenon of dielectric hysteresis occurs with AC Both AC and DC DC None of these AC Both AC and DC DC None of these ANSWER DOWNLOAD EXAMIANS APP
Materials and Components When a material is in superconducting state and a magnetic field is applied The superconducting property may be destroyed The superconducting property may be affected and resistivity may increase from zero to a low value The superconducting property is not affected The material may become an insulator The superconducting property may be destroyed The superconducting property may be affected and resistivity may increase from zero to a low value The superconducting property is not affected The material may become an insulator 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 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 Normal to both current and magnetic field In the same direction as current ANSWER DOWNLOAD EXAMIANS APP
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