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Magnetism and Electromagnetism

Magnetism and Electromagnetism
One telsa is equal to

1 Wb/mm²
1 Wb/m
1 Wb/m²
1 mWb/m²

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Magnetism and Electromagnetism
Gilbert is a unit of

permittivity
electromotive force
conductance
magnetomotive force

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Magnetism and Electromagnetism
The main constituent of permalloy is

Chromium
Nickel
Tungsten
Cobalt

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Magnetism and Electromagnetism
What is the magneto-motive force in a 75-turn coil of wire when there are 4 A of current through it?

30 AT
3 AT
300 AT
0.3 AT

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Magnetism and Electromagnetism
The ability of a material to remain magnetized after removal of the magnetizing force is known as

reluctance
permeability
retentivity
hysteresis

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

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

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MORE MCQ ON Magnetism and Electromagnetism

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