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Engineering Materials in EE

Engineering Materials in EE
Permanent magnets are used in

 motors.
 generators.
 all of above.
 loud speakers.

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Engineering Materials in EE
The permanent magnets are made from which of following materials ?

 Soft iron.
 Paramagnetic.
 Ferromagnetic.
 Diamagnetic.

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

None of these
 Share electrons
 Share holes
 Lack holes

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Engineering Materials in EE
The dielectric strength of ferroelectric materials depends to a large extent on

 area of hysteresis loop for the material.
 presence of magnetic materials in the vicinity.
 intensity of electric field.
 frequency of applied voltage.

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

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

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Engineering Materials in EE
Find the odd one out.

 Emissivity.
 Dielectric strength.
 Absorptivity.
 Refractive index.

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MORE MCQ ON Engineering Materials in EE

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