Junction Field Effect Transistor (JFET) Multiple Choice Questions And Answers


21. The primary control on drain current in a JFET is exerted by which of the following?


   A.Gate reverse bias

   B.Size of depletion regions

   C.Voltage drop across channel

   D.Channel resistance


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A.Gate reverse bias

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22. In a JFET, gates are always


   A.Unbiased

   B.Reverse biased

   C.Either forward or reverse biased

   D.Forward biased


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B.Reverse biased

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23. The main disadvantage of a JFET is


   A.Low gain-band width product

   B.Low gain

   C.High cost

   D.High noise level


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A.Low gain-band width product

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24. The transconductance curve of a JFET is


   A.Inverted V-type

   B.Parabolic

   C.Hyperbolic

   D.A straight line


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B.Parabolic

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25. Three terminals of a JFET are


   A.Pole, dipole and bipole

   B.Emitter, collector and base

   C.Source, drain and current

   D.Top, base and side


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C.Source, drain and current

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