Electronic Devices and Circuits MCQs with answers Page - 32

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A

Admin • 833.24K Points
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Q. In FET the drain voltage above which there is no increase in the drain current is called........ voltage ?

  • (A) Critical
  • (B) Pinch off
  • (C) Breakdown
  • (D) Pick off

A

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Q. The characteristics of JFET are similar to ?

  • (A) MOSFET
  • (B) SCR
  • (C) Triode
  • (D) Pentode

A

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Q. N-channel FETs are superior to p-channel FETs because ?

  • (A) They have high switching time
  • (B) Mobility of electrons is greater than that of holes
  • (C) They consume less power
  • (D) Mobility of electrons is smaller than that of holes

A

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Q. The preferred from of biasing a JFET amplifier is ..... bias ?

  • (A) Self
  • (B) Drain
  • (C) Source
  • (D) Gate

A

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Q. The main use of a JFET is with a ?

  • (A) Trigger
  • (B) Source follower
  • (C) Snubber
  • (D) Frequency mixer

A

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Q. In a FET ?

  • (A) The channel is lightly doped and gate is heavily doped
  • (B) The channel is lightly doped and gate is lightly doped
  • (C) The channel is heavily doped and gate is lightly doped
  • (D) The channel is heavily doped and gate is heavily doped

A

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Q. When a JFET is pinched off, the depletion layers are ?

  • (A) Conducting
  • (B) Close together
  • (C) Touching
  • (D) Far apart

A

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Q. One of the major applications of JEFT is in ?

  • (A) Switching
  • (B) Electron flow regulation
  • (C) Constant voltage source
  • (D) Constant current source

A

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Q. Which of the following statement is true about FET ?

  • (A) It has high output impedance
  • (B) It has high input impedance
  • (C) It has low input impedance
  • (D) It does not offer any resistance

A

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Q. In saturation region JFET acts like a ?

  • (A) Switch
  • (B) Short circuit
  • (C) Bipolar device
  • (D) Resistance

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