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Magnetism and Electromagnetism

Magnetism and Electromagnetism
One telsa is equal to

1 mWb/m²
1 Wb/mm²
1 Wb/m
1 Wb/m²

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Magnetism and Electromagnetism
If the steel disk in a crankshaft position sensor has stopped with the tab in the magnet's air gap, the induced voltage

Decrease
None of the listed here
Is zero
Increase

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Magnetism and Electromagnetism
Paramagnetic materials have relative permeability

slightly less than unity
slightly more than unity
equal to that ferromagnetic mate rials
equal to unity

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Magnetism and Electromagnetism
Which of the following materials are diamagnetic?

Iron
Silver
Silver and copper
Copper

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Magnetism and Electromagnetism
What is the reluctance of a material that has a length of 0.07 m, a cross-sectional area of 0.014 m2, and a permeability of 4,500 Wb/At × m?

1 At/Wb
1111 At/Wb
11 At/Wb
111 At/Wb

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Magnetism and Electromagnetism
Substances which have permeability less than the permeability of free space are known as

Bipolar
Ferro magnetic material
Diamagnetic material
Paramagnetic material

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MORE MCQ ON Magnetism and Electromagnetism

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