Diode - Diode objective questions and answers


11. For a PN diode, the number of minority carriers crossing the junction mainly depends on


   A.Potential barrier

   B.Forward bias voltage

   C.Rate pf thermal generation of electron holes pairs

   D.None of the above


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C.Rate pf thermal generation of electron holes pairs

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12. When a PN junction is unbiased, the junction current at equilibrium is


   A.Mainly due to diffusion of minority carriers

   B.Zero as equal number of carriers cross the barrier

   C.Mainly due to diffusion of majority carries

   D.Zero as no charges cross the junction


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B.Zero as equal number of carriers cross the barrier

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13. At high forward voltage, a junction diode may


   A.Conduct more current

   B.Loose doped impurities

   C.Burn out

   D.Become noisy


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C.Burn out

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14. In a P-type semiconductor, the majority carriers are..............and the minority carriers are...........


   A.Free electrons, holes

   B.Holes, ions

   C.Holes, free electrons

   D.Ions, holes


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C.Holes, free electrons

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15. Which of the following donor impurity is used for Germanium?


   A.Antimony

   B.Arsenic

   C.Any of the above

   D.None of the above


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C.Any of the above

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