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Magnetism and Electromagnetism

Magnetism and Electromagnetism
Which of the following is the unit of magnetic flux density?

Tesla
Weber
None of the listed here
Lumens

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Magnetism and Electromagnetism
Materials subjected to rapid reversal of magnetism should have

High co-ercivity and low density
Large area of B-H loop
High permeability and low hysteresis loss
High co-ercivity and high retentivity

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Magnetism and Electromagnetism
The relative permeability of materials is not constant.

None of the listed here
Ferromagnetic
Diamagnetic
Paramagnetic

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Magnetism and Electromagnetism
Magnetising steel is normals difficult because

it has low permeability
it has high permeability
it has high specific gravity
it corrodes easily

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Magnetism and Electromagnetism
Magnetic moment is a

universal constant
scalar quantity
vector quantity
pole strength

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Magnetism and Electromagnetism
What will be the magnetic potential difference across the air gap of 2 cm length in magnetic field of 200 AT/m?

16 AT
8 AT
10 AT
4 AT

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MORE MCQ ON Magnetism and Electromagnetism

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