ENGINEERING MATERIALS IN EE QUIZ

 electrons and protons.

 protons.

 protons and neutrons.

 electrons.

 dipoles are repel other.

 none of above.

 dipoles are attract each other.

 both are correct.

 nucleus.

 electrons.

 protons.

 neutrons.

 aluminium, nickel.

 iron, cobalt, nickel.

 iron, aluminium.

 aluminium, nickel, iron and cobalt.

None of these

 Lack holes

 Share holes

 Share electrons

  Permalloy, nickel, air, water.

 Pure iron, silicon iron, aluminium, bismuth.

 Silver, copper, aluminium, iron.

 Cobalt, nickel, aluminium, iron.

 Large hysteresis loop.

 High electrical resistivity.

 High magnetic permeability.

All of these

 High temperature.

 Friction and wear.

  Low temperature.

 Crystal growth.

 Refractive index.

 Absorptivity.

 Emissivity.

 Dielectric strength.

 They lose their nonlinearly property above the Curie temperature.

  They have fixed value of μr.

 They have large magnetic susceptibility.

 Energy loss is proportional to the area of hysteresis loop.