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Analog Electronics

Analog Electronics
Assume that diode D1, D2 in figure are ideal diodes. The value of current is mcq-diagram

 0.5 mA.
 2 mA.
 1 mA.
 0 mA.

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Analog Electronics
A JFET has disadvantage of

  having low input impedance.
  possessing positive temperature coefficient.
  being noisy.
  having small gain-bandwidth product.

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Analog Electronics
The transition capacitance of a reverse biased pn junction having uniform doping on both sides, varies with junction voltage ( VB ) as

  ( VB )- 1 / 2.
  1 / VB.
  ( VB )2.
  VB.

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Analog Electronics
A 741 C has

  an output impedance of 75 Ω.
  a voltage gain of 100,000.
All of these
  an input impedance of 2 MΩ.

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Analog Electronics
Silicon has

 none of above.
 two valence electrons.
 four valence electrons.
 eight valence electrons.

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Analog Electronics
For a diode, reverse recovery time is defined as the time between the instant diode current becomes zero and the instant reverse recovery current decays to

  25% of reverse peak current.
 15% of reverse peak current.
 10% of reverse peak current.
 0.

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