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Engineering Materials in EE

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

  ferrites.
  silicon carbide.
  silicon.
 iron.

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

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

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Engineering Materials in EE
In ferromagnetic materials

 the constituent is only iron.
 one of the constituent is iron.
 the atomic magnetic moments are antiparallel and unequal.
 the atomic magnetic moments are parallel.

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Engineering Materials in EE
When will be the electron pair bonding occurs ?

None of these
 Share holes
 Share electrons
 Lack holes

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Engineering Materials in EE
Dielectric constant for vacuum is

  1.
 100.
  infinity.
  0.

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Engineering Materials in EE
Cryogenics is a branch of science dealing with which of the following?

 High temperature.
 Friction and wear.
  Low temperature.
 Crystal growth.

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MORE MCQ ON Engineering Materials in EE

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