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Analog Electronics

Analog Electronics
Which of the following is Pentavalent impurity?

 antimony
 gallium
 boron
 indium

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Analog Electronics
The emitter of the transistor is doped

  moderately.
  lightly.
  heavily.
  none of these

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Analog Electronics
A LED produces light when

  forward biased.
  unbiased.
None of these
  reverse biased.

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Analog Electronics
Colpitts oscillator is also called as

 Resonant circuit oscillator
 Tank circuit oscillator
 LC oscillator
All of these

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Analog Electronics
The junction capacitance of linearly graded junction varies with the applied reverse bias, VR as

  (VR)- 1/3.
  (VR)- 1.
  (VR)1/2.
  (VR)- 1/2.

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Analog Electronics
When there is no base current in a transistor switch, the output voltage from the transistor is

 unknown.
 low.
  high.
 unchanged.

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