Ferromagnetic materials - Materials and Components

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

Ferromagnetic materials

can be used even at microwave frequencies

have resistivity very high as compared to that of iron

shows spontaneous magnetisation below a certain temperature

All of the above

Correct Answer : Option (D) : All of the above

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