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Magnetism and Electromagnetism

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

higher
little
zero
lower

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Magnetism and Electromagnetism
Magnetism of a magnet can be destroyed by

By inductive action of another magnet
All of the listed here
Heating
Hammering

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Magnetism and Electromagnetism
Magnetising steel is normals difficult because

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

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Magnetism and Electromagnetism
If the cross-sectional area of a magnetic field increases, but the flux remains the same, the flux density

decreases
remains the same
increases
doubles

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Magnetism and Electromagnetism
The force between two long parallel conductors is inversely proportional to

Product of current in two conductors
Current in one conductor
Distance between the conductors
Radius of conductor

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Magnetism and Electromagnetism
The ratio of intensity of magnetisation to the magnetisation force is known as

None of the listed here
Flux density
Susceptibility
Relatice permeability

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MORE MCQ ON Magnetism and Electromagnetism

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