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 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 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 affected and resistivity may increase from zero to a low value The superconducting property may be destroyed The superconducting property is not affected The material may become an insulator The superconducting property may be affected and resistivity may increase from zero to a low value The superconducting property may be destroyed The superconducting property is not affected The material may become an insulator ANSWER DOWNLOAD EXAMIANS APP
Materials and Components The dielectric losses do not depend on frequency. False True False True ANSWER DOWNLOAD EXAMIANS APP
Materials and Components The rule that resistivity of conductors can be separated into two parts viz. temperature independent and temperature dependent is known as Debye rule Curie rule Matthiessen’s rule Onne’s rule Debye rule Curie rule Matthiessen’s rule Onne’s rule ANSWER DOWNLOAD EXAMIANS APP
Materials and Components Electric dipole moment is expressed in debye unit. True False True False ANSWER DOWNLOAD EXAMIANS APP
Materials and Components Piezoelectricity means the slight change in dimensions of a specimen when an electric field is applied. True False True False ANSWER DOWNLOAD EXAMIANS APP
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