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 The elements which become superconducting at extremely low temperatures are Relatively poor conductors at room temperature Good conductors at room temperature Ferromagnetic at room temperature Insulators at room temperature Relatively poor conductors at room temperature Good conductors at room temperature Ferromagnetic at room temperature Insulators at room temperature 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 Which inductor is used at high frequencies? Iron alloy cored Ceramic cored Sheet steel cored Cast iron cored Iron alloy cored Ceramic cored Sheet steel cored Cast iron cored ANSWER DOWNLOAD EXAMIANS APP
Materials and Components In van der walls crystals, there exists a high degree of stability of the outer electron shell. False True False True ANSWER DOWNLOAD EXAMIANS APP
Materials and Components If a small amount of Cu is added to Ni conductor, then Residual resistivity of Ni at low temperature will increase as Cu atoms act as defect centres Resistivity of Ni will decrease at all temperatures because Cu is a better conductor than Ni Resistivity of Ni remains the same Resistivity of Ni will increase at all temperatures as Cu destroys the periodicity of Ni and acts as defects Residual resistivity of Ni at low temperature will increase as Cu atoms act as defect centres Resistivity of Ni will decrease at all temperatures because Cu is a better conductor than Ni Resistivity of Ni remains the same Resistivity of Ni will increase at all temperatures as Cu destroys the periodicity of Ni and acts as defects ANSWER DOWNLOAD EXAMIANS APP
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