Semiconductor - Semiconductor objective questions and answers


16. The forward region of a semiconductor diobe characteristic curve is where diode appears as


   A.High resistance

   B.An ON switch

   C.An OFF switch

   D.A capacitor


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B.An ON switch

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17. In a semiconductor diode, the barrier offers opposition to


   A.Majority carriers in both regions

   B.Majority as well as minority carriers in both regions


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A.Majority carriers in both regions

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18. In case of semiconductors, recombination is merging of


   A.An electrons with a hole

   B.An outside electron with semiconductor electrons

   C.Two or more electrons

   D.Two or more holes


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B.An outside electron with semiconductor electrons

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19. The conduction band


   A.Is always above the forbidden energy level

   B.Is the region of free electrons

   C.Concentrates holes for the flow of current

   D.Is a range of energies corresponding to the energies of the free electrons


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D.Is a range of energies corresponding to the energies of the free electrons

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20. The temperature co-efficient of an intrinsic semiconductor is.......


   A.Zero

   B.Positive

   C.Negative

   D.None of them


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C.Negative

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