Materials and Components If a small amount of Cu is added to Ni conductor, then Resistivity of Ni remains the same Residual resistivity of Ni at low temperature will increase as Cu atoms act as defect centres Resistivity of Ni will increase at all temperatures as Cu destroys the periodicity of Ni and acts as defects Resistivity of Ni will decrease at all temperatures because Cu is a better conductor than Ni Resistivity of Ni remains the same Residual resistivity of Ni at low temperature will increase as Cu atoms act as defect centres Resistivity of Ni will increase at all temperatures as Cu destroys the periodicity of Ni and acts as defects Resistivity of Ni will decrease at all temperatures because Cu is a better conductor than Ni ANSWER DOWNLOAD EXAMIANS APP
Materials and Components Which inductor is used at high frequencies? Ceramic cored Sheet steel cored Cast iron cored Iron alloy cored Ceramic cored Sheet steel cored Cast iron cored Iron alloy cored ANSWER DOWNLOAD EXAMIANS APP
Materials and Components If the number of atoms per unit volume of a monoatomic gas changes, the dielectric constant still remains constant. False True False True ANSWER DOWNLOAD EXAMIANS APP
Materials and Components The elements which become superconducting at extremely low temperatures are 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 Insulators at room temperature ANSWER DOWNLOAD EXAMIANS APP
Materials and Components As the viscosity of a liquid increases, the relaxation time First decreases then increases Increases Remains constant Decreases First decreases then increases Increases Remains constant Decreases ANSWER DOWNLOAD EXAMIANS APP
Materials and Components On the basis of the type of chemical bonds, solids may be classified into Ionic crystals, valence crystals, metal and vander wall crystals Ionic crystals Ionic crystal, valence crystals and metals Ionic and valence crystals Ionic crystals, valence crystals, metal and vander wall crystals Ionic crystals Ionic crystal, valence crystals and metals Ionic and valence crystals ANSWER DOWNLOAD EXAMIANS APP
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