Semiconductor - Semiconductor objective questions and answers


36. For a germanium P-N junction, the barrier potential is nearly.......


   A.0.15 V

   B.0.3 V

   C.0.45 V

   D.0.6 V/span>


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B.0.3 V

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37. For a silicon P-N junction, the barrier potential is about


   A.0.7 V

   B.0.8 V

   C.0.9 V

   D.1.0 V


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A.0.7 V

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38. In order to obtain a P-type germanium, the germanium should be doped with a ........ impurity


   A.Trivalent

   B.Tetravalent

   C.Pentavalent

   D.Any of the above


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A.Trivalent

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39. ......... are immobile.


   A.Ions

   B.Electrons

   C.Holes

   D.None of the above


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A.Ions

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40. A zener diode is invariably used with


   A.Reverse bias

   B.Forward bias

   C.Zero bias

   D.Any of the above


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A.Reverse bias

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