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Engineering Materials in EE

Engineering Materials in EE
Find the odd one out.

 Absorptivity.
 Emissivity.
 Refractive index.
 Dielectric strength.

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Engineering Materials in EE
The number of rings in the Bohr model of any element is determined by what?

 Atomic mass.
 Row number on periodic table.
 Atomic number.
 Column number on periodic table.

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Engineering Materials in EE
Permittivity of free space is equal to

 8.854 × 10 - 10 F / m.
 8.854 × 10 - 13 F / m.
 8.854 × 10 - 11 F / m.
 8.854 × 10 - 12 F / m.

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Engineering Materials in EE
In order to minimise loss due to hysteresis, the magnetic material should have

  high retentivity.
  large B-H loop area.
  high resistivity.
  low hysteresis coefficient.

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Engineering Materials in EE
Which of the following is the ferroelectric material ?

 Rochelle salt.
 Barium titanate.
 Potassium dihydrogen phosphate.
All of these

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Engineering Materials in EE
ALNICO is an alloy of

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

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MORE MCQ ON Engineering Materials in EE

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