When a material is in superconducting state and a magnetic field is applied

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

The superconducting property may be destroyed

The material may become an insulator

The superconducting property is not affected

The superconducting property may be affected and resistivity may increase from zero to a low value

Correct Answer : Option (A) : The superconducting property may be destroyed

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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