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Engineering Materials in EE

Engineering Materials in EE
The materials which exhibit the same elastic properties in all directions are called

 inelastic.
 isotropic.
 isentropic.
 visco elastic.

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

  silicon carbide.
  ferrites.
  silicon.
 iron.

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Engineering Materials in EE
Two different isotopes of an element have different

 numbers of protons.
 numbers of electrons.
 numbers of neutrons.
 atomic number.

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Engineering Materials in EE
Temporary magnets are used in which of the following ?

  Hoist.
  Motors.
  All of these.
  Generators.

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Engineering Materials in EE
Which of the following gives materials in order of decreasing values of permeability?

 Pure iron, silicon iron, aluminium, bismuth.
  Permalloy, nickel, air, water.
 Silver, copper, aluminium, iron.
 Cobalt, nickel, aluminium, iron.

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

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

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MORE MCQ ON Engineering Materials in EE

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