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Magnetism and Electromagnetism

Magnetism and Electromagnetism
The retentivity of material is useful for the construction of

Non-magnetic substances
Electromagnets
Permanent magnets
Transformers

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Magnetism and Electromagnetism
The most effective and quickest may of making a magnet from soft iron is by

Rubbing with another magnet
Induction
The use of permanent magnet
Placing it inside a coil carrying current

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Magnetism and Electromagnetism
Reciprocal of permeability is

Reluctivity
Susceptibility
Permeability
conductance

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Magnetism and Electromagnetism
The susceptibility of paramagnetic materials generally lies between

KT4 and KT8
1CT3 and 1CT7
KT3 and 1CT6
10"2 and KT5

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Magnetism and Electromagnetism
Degaussing is the process of

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

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

zero
little
lower
higher

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MORE MCQ ON Magnetism and Electromagnetism

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