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Magnetism and Electromagnetism

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?

100 At
200 At
300 At
150 At

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Magnetism and Electromagnetism
Ferrites are a sub-group of

Ferro magnetic material
Non-magnetic materials
Paramagnetic material
Ferri-magnetic material

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Magnetism and Electromagnetism
What is the flux density in a magnetic field in which the flux in 0.1 m2 is 600 Wb?

6,000 T
600 T
600 T
6 T

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Magnetism and Electromagnetism
A magnetic field exists around

Aluminium
Moving Charges
Iron
Copper

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

lower
little
zero
higher

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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.

triangular
rectangular
circular
None of the listed here

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MORE MCQ ON Magnetism and Electromagnetism

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