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Engineering Materials in EE

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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Engineering Materials in EE
Susceptibility is negative for

 diamagnetic substances.
 ferromagnetic substances.
 non magnetic substances.
 none of above.

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

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

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

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

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Engineering Materials in EE
Find the odd one out.

 Emissivity.
 Dielectric strength.
 Absorptivity.
 Refractive index.

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Engineering Materials in EE
In Bohr’s model of atomic structure, the nucleus consists of

 protons and neutrons.
 electrons.
 protons.
 electrons and protons.

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MORE MCQ ON Engineering Materials in EE

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