Engineering Materials in EE
Why diamond is very hard ?

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

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Engineering Materials in EE
Which statement is not true of ferromagnetic materials.

 They have large magnetic susceptibility.
 Energy loss is proportional to the area of hysteresis loop.
  They have fixed value of μr.
 They lose their nonlinearly property above the Curie temperature.

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