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Magnetism and Electromagnetism

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

300 At
30 At
187 At
18.75 At

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Magnetism and Electromagnetism
Hysteresis loop in case of magnetically hard materials is more in shape as compared to magnetically soft materials.

None of the listed here
rectangular
circular
triangular

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Magnetism and Electromagnetism
The unit for reluctance is

At/Wb
tesla
Wb
At/m

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Magnetism and Electromagnetism
The unit for permeability is

Wb/At × m
Wb
At/m
At/Wb

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Magnetism and Electromagnetism
Degaussing is the process of

Demagnetising metallic parts
Remagnetising metallic parts
Removing gases from the materials
Removal of magnetic impurities

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Magnetism and Electromagnetism
Air gap has_______eluctance as compared to iron or steel path

zero
higher
little
lower

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MORE MCQ ON Magnetism and Electromagnetism

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