☰ Electrical Engineering Material (Electrical Engineering) - MCQs

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Q7.

the band gap of silicon at room temperature is

  • A. 1.3 eV
  • B. 0.7 eV
  • C. 1.1 eV
  • D. 1.4 eV
    ✍ Discuss    
Q8.

behaviour of conductors, semiconductors and insulators is explain on the basis of

  • A. atomic structure
  • B. molecular structure
  • C. energy band structure
  • D. all of the above
    ✍ Discuss    
Q9.

in intrinsic semiconductor has equal number of electrons and holes in it. this is due to

  • A. doping
  • B. free electrons
  • C. thermal energy
  • D. Valence electrons
    ✍ Discuss    
Q10.

the covalent bond is formed by

  • A. transfer of electrons between atoms
  • B. sharing of electrons between atoms
  • C. sharing of variable number of electrons by a variable number of atoms
  • D. removing the electron completely
    ✍ Discuss    
Q11.

the nature of crystal binding in germanium is

  • A. ionic
  • B. metallic
  • C. covalent
  • D. van der waal type
    ✍ Discuss    
Q12.

which of the following materials does not have a covalent bond?

  • A. metal
  • B. silicon
  • C. organic polymers
  • D. diamond
    ✍ Discuss    
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