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Engineering Materials in EE

Engineering Materials in EE
The magnetisation and applied field in ferromagnetic materials are related

 sinusoidally.
 linearly.
 non linearly.
 parabolically.

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Engineering Materials in EE
Which of the following is the ferroelectric material ?

 Barium titanate.
 Potassium dihydrogen phosphate.
All of these
 Rochelle salt.

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Engineering Materials in EE
It is difficult to magnetize steel because it has

 low susceptibility.
  low permeability.
 high permittivity.
 high permeability.

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Engineering Materials in EE
Magnetic recording tape is most commonly made from

 iron-dust.
 silicon-iron.
 small particles of iron.
 ferric-oxide.

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Engineering Materials in EE
A degaussing is the process of

 demagnetising metallic parts.
 removal of magnetic impurities.
 removing gases from materials.
 remagnetising metallic parts.

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Engineering Materials in EE
Permanent magnets are used in

 all of above.
 loud speakers.
 motors.
 generators.

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MORE MCQ ON Engineering Materials in EE

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