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Engineering Materials in EE

Engineering Materials in EE
ALNICO is an alloy of

 aluminium, nickel.
 iron, cobalt, nickel.
 iron, aluminium.
 aluminium, nickel, iron and cobalt.

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

 parabolically.
 sinusoidally.
 linearly.
 non linearly.

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Engineering Materials in EE
Choose the best suitable of Diamagnetic : Paramagnetic::

 Nickel : Cobalt.
 Iron : Steel.
 Water : Air.
 Permalloy : Super-alloy.

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Engineering Materials in EE
Substance having permeability less than the permeability of free space, are known as

 ferromagnetic.
 paramagnetic.
 diamagnetic.
 bipolar.

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Engineering Materials in EE
Absolute permittivity of a dielectric medium is represented by

 εoεr.
 εr / εo.
None of these
 εo / εr.

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Engineering Materials in EE
The core of a transformer for microwave frequency should be made of

  silicon carbide.
 iron.
  ferrites.
  silicon.

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MORE MCQ ON Engineering Materials in EE

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