Semiconductor - Semiconductor objective questions and answers


26. Consider the energy level diagram of an intrinsic semiconductor. The Fermi level lies in the


   A.Valence band

   B.Forbidden band or

   C.Conduction band or

   D.It can be at any of the above locations depending upon the doping concentration and temperature


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B.Forbidden band or

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27.  In any specimen the Hall voltage is proportional to magnetic field β as


   A.β

   B.β2

   C.1/β

   D.1/β2


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A.β

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28. Intrinsic concentration of charge carriers in a semiconductor varies as


   A.T3

   B.T2

   C.T

   D.1/T


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A.T3

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29. The dynamic resistance of a diode varies as


   A.I the current

   B.I2

   C.1/I

   D.1/I2


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C.1/I

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30. The forbidden band in germanium at 00K is


   A.0.03 eV

   B.0.785 eV

   C.1.5 eV

   D.2.0 eV


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B.0.785 eV

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