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Question

In a PNP transistor, the base is of________ material.

This question was previously asked in
RRB ALP 2018 CBT 2 Fitter Question Paper (21-Jan-2019) (Shift 3)
The correct answer is
N

PNP Transistor Base Material Identification

A PNP transistor consists of three semiconductor layers. The structure is defined by the types of materials used for the Emitter, Base, and Collector regions.

  • P in PNP refers to the P-type semiconductor material used for the Emitter.
  • N in PNP refers to the N-type semiconductor material used for the Base.
  • The final P refers to the P-type semiconductor material used for the Collector.

Therefore, the base layer in a PNP transistor is made of N-type semiconductor material.

The correct option is N.

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