When temperature is above ferromagnetic Curie temperature, a ferromagnetic material

A)
becomes diamagnetic material
B)
becomes a paramagnetic material
C)
becomes a very strong ferromagnetic material
D)
None of the above

Correct Answer : Option (B) :   becomes a paramagnetic material

Explanation : Above ferromagnetic Curie temperature, ferro-magnetic material behaves as a paramagnetic material.

Recently Updated in Materials and Components Questions
Magnetic hysteresis phenomenon is explained by
A)
domain rotation
B)
motion of domain walls
C)
motion of domain walls and domain rotation
D)
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
A)
having a radius equal to 1 miles
B)
having a circumference equal to 1 miles
C)
having a circumference equal to 0 miles
D)
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
A)
steel
B)
ferrite
C)
air
D)
powdered iron

Correct Answer :   air

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