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Magnetism and Electromagnetism

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

lower
zero
higher
little

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Magnetism and Electromagnetism
When a magnet is in motion relative to a coil the induced e.m.f. does not depend upon

Motion of the magnet
Number of turns of the coil
Resistance of the coil
Pole strength of the magnet

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Magnetism and Electromagnetism
The bar magnet has

Dipole moment
Monopole moment
Both dipole and monopole moment
None of the listed here

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Magnetism and Electromagnetism
The uniform magnetic field is

The field of a single conductor
The field of a set of parallel conductors
None of the listed here
The field in which all lines of magnetic flux are parallel and equidistant

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Magnetism and Electromagnetism
The Biotsavart's law is a general modification of

Ampere's law
Faraday's laws
Kirchhoff's law
Lenz's law

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Magnetism and Electromagnetism
Which of the following type of materials are not very important for engineering applications?

Ferro magnetic material
Diamagnetic material
None of the listed here
Paramagnetic material

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