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


26. The input resistance of JFET ideally approaches


   A.Zero

   B.5 ohms

   C.200 ohms

   D.Infinity


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D.Infinity

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27. For a JFET, above the pinch-off voltage, the


   A.Drain current remains constant

   B.Drain current decreases

   C.Drain current increases

   D.Drain current varies parabolically


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A.Drain current remains constant

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28. For holding the drain current constant inspite of large changes in JFET parameters


   A.Current source bias is used

   B.Reverse bias is used

   C.Voltage divider bias is used

   D.No bias is used


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A.Current source bias is used

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29. JFETs cascode means


   A.Two FETs connected in parallel

   B.A common gate driving a common source connection

   C.A common gate source driving a common gate connection

   D.None of the above


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C.A common gate source driving a common gate connection

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30. The operation of a JFET involves a flow of


   A.Recombination carriers

   B.Majority carriers

   C.Minority carriers

   D.Any of the above


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B.Majority carriers

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