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MAGNETISM AND ELECTROMAGNETISM

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

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

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Magnetism and Electromagnetism
A rectangular magnet of magnetic moment M is cut into two piece of same length, the magnetic moment of each piece will be

M/2
M
2M
M/4

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

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

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Magnetism and Electromagnetism
Gilbert is a unit of

permittivity
electromotive force
magnetomotive force
conductance

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Magnetism and Electromagnetism
Indicate which of the following material does not retain magnetism permanently.

Soft iron
Hardened steel
Stainless steel
None of the listed here

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