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Engineering Materials in EE

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

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

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Engineering Materials in EE
What is the dielectric constant of mica ?

 100.
 1 to 2.
  3 to 8.
 200.

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Engineering Materials in EE
When the atomic magnetic moments are randomly oriented in a solid its magnetic behavior is termed as

 paramagnetic.
 semi-magnetic.
 poly crystalline.
 anti-ferromagnetic.

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Engineering Materials in EE
A ferrite core has low eddy current loss than an iron core because

 ferrites have low permeability.
 ferrites are magnetic.
 / >ferrites have high resistance.
 ferrites have hig hysteresis.

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

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

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Engineering Materials in EE
A material with unequal anti-parallel atomic magnetic moments is

 non-magnetic.
 an anti-ferromagnet.
 ferrimagnet.
 a ferrite.

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MORE MCQ ON Engineering Materials in EE

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