Field Effect Transistor (FET) Multiple Choice Questions And Answers


36. The main disadvantage of the FET is its


   A.Low input impedance

   B.Low thermal stability

   C.High noise

   D.Low gain-band width product


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D.Low gain-band width product

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37. The input gate current of a FET is


   A.A few micro-amperes

   B.A few mili-amperes

   C.A few amperes

   D.Negiligibly small


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D.Negiligibly small

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38. A FET, for its operation, depends on the variation of


   A.Magnetic field

   B.Reversed-biased junction

   C.Forward-biased junction

   D.The depletion-layer width with reverse field


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D.The depletion-layer width with reverse field

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39. Resistance of FET


   A.Increases with increase of temperature

   B.Is independent of temperature

   C.Increases with decrease of temperature

   D.None of the above


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A.Increases with increase of temperature

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40. A FET differs from a bipolar transistor as it has


   A.Negative resistance

   B.Simpler fabrication

   C.High input impedance

   D.Any of the above


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C.High input impedance

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