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ENGINEERING MATERIALS IN EE

Engineering Materials in EE
Why diamond is very hard ?

 Because of high melting point
None of these
 Because of covalent solid
 Because of large cohesive energy

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Engineering Materials in EE
What is the value of dielectric constant of air?

 none of these.
 Less than 1
 1.
 0.

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Engineering Materials in EE
Which of the following is the example for piezo-electric material ?

None of these
 Lead zirconate titanate
 Copper
 Potassium niobate

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

 Share holes
 Share electrons
 Lack holes
None of these

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Engineering Materials in EE
ALNICO is an alloy of

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

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