Home / EEE / Semiconductor Theory Multiple :: Section-1

EEE :: Semiconductor Theory Multiple

  1. The strength of a semiconductor crystal comes from

  2. A.

     Forces between nuclei

    B.

     Forces between protons

    C.

     Electron-pair bonds

    D.

     None of the above

    View Answer

    Workspace

    Discuss Discuss in Forum


  3. The impurity level in an extrinsic semiconductor is about of pure semiconductor.

  4. A.

     10 atoms for 108 atoms

    B.

     1 atom for 108 atoms

    C.

     1 atom for 104 atoms

    D.

     1 atom for 100 atoms

    View Answer

    Workspace

    Discuss Discuss in Forum


  5. A hole and electron in close proximity would tend to ___________

  6. A.

     Repel each other

    B.

     Attract each other

    C.

     Have no effect on each other

    D.

     None of the above

    View Answer

    Workspace

    Discuss Discuss in Forum


  7. A semiconductor has generally ___________ valence electrons.

  8. A.

     2

    B.

     3

    C.

     6

    D.

     4

    View Answer

    Workspace

    Discuss Discuss in Forum


  9. A pentavalent impurity has ___________ Valence electrons

  10. A.

     3

    B.

     5

    C.

     4

    D.

     6

    View Answer

    Workspace

    Discuss Discuss in Forum


  11. A forward biased pn junction diode has a resistance of the order of

  12. A.

     Ω

    B.

     kΩ

    C.

     MΩ

    D.

     None of the above

    View Answer

    Workspace

    Discuss Discuss in Forum


  13. A reverse biased pn junction has resistance of the order of

  14. A.

     Ω

    B.

     kΩ

    C.

     MΩ

    D.

     None of the above

    View Answer

    Workspace

    Discuss Discuss in Forum


  15. A semiconductor has ___________ temperature coefficient of resistance.

  16. A.

     Positive

    B.

     Zero

    C.

     Negative

    D.

     None of the above

    View Answer

    Workspace

    Discuss Discuss in Forum


  17. At room temperature, an intrinsic semiconductor has ___________

  18. A.

     Many holes only

    B.

     A few free electrons and holes

    C.

     Many free electrons only

    D.

     No holes or free electrons

    View Answer

    Workspace

    Discuss Discuss in Forum


  19. At absolute temperature, an intrinsic semiconductor has ___________

  20. A.

     A few free electrons

    B.

     Many holes

    C.

     Many free electrons

    D.

     No holes or free electrons

    View Answer

    Workspace

    Discuss Discuss in Forum