If a small amount of Cu is added to Ni conductor, then

Electronics and Communication Engineering (ECE) : Materials and Components - Quiz(MCQ)

Resistivity of Ni remains the same

Resistivity of Ni will decrease at all temperatures because Cu is a better conductor than Ni

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

Correct Answer : Option (D) : Resistivity of Ni will increase at all temperatures as Cu destroys the periodicity of Ni and acts as defects

Recently Updated in Materials and Components Questions

Magnetic hysteresis phenomenon is explained by

domain rotation

motion of domain walls

motion of domain walls and domain rotation

None of the above

Correct Answer : motion of domain walls and domain rotation

A circular sphere mile is the area of cross-section of a wire

having a radius equal to 1 miles

having a circumference equal to 1 miles

having a circumference equal to 0 miles

having a diameter equal to 1 miles

Correct Answer : having a diameter equal to 1 miles

For small size high frequency coils, the most common core material is

steel

ferrite

air

powdered iron

Correct Answer : air