PNP And NPN Transistor Multiple Choice Questions And Answers


21. In the symbols of PNP transistor and NPN transistor the arrow on the emitter shows the direction of flow of


   A.Electrons, holes

   B.Holes, holes

   C.Holes, electrons

   D.Electrons, electrons


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B.Holes, holes

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22. When Si NPN transistor in inactive, the base to emitter voltage is equal to


   A.0.6

   B.0.4

   C.1.4

   D.0.88


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A.0.6

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23. The majority carriers in the base of an NPN germanium transistor are


   A.Impurity ions

   B.Holes

   C.Electrons

   D.Electron-hole pairs


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B.Holes

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24. Most of the holes in the base of a PNP transistor flow


   A.Into the collector

   B.Into the emitter

   C.Into the supply

   D.Out of base into the base least


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A.Into the collector

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25. The majority carriers in case of NPN silicon transistor are


   A.Electrons

   B.Electron-hole pairs

   C.Holes

   D.Impurity ions


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A.Electrons

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