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Analog Electronics

Analog Electronics
Example of donor atom is

 Silicon
 Antimony
 Germinium
 Both A and B

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Analog Electronics
When P-type substance is connected with positive and N-type is connected with negative terminal then P-N junction diode is in ....................

 Forward biased
None of these
 No biased
 Reverse biased

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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 )2.
  VB.
  1 / VB.
  ( VB )- 1 / 2.

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Analog Electronics
A 741-type OP-amp has a gain-bandwidth product of 1MHz.A non-inverting amplifier using this opamp & having a voltage gain of 20db will exhibit -3db bandwidth of

50 KHz
1000/17 KHz
100 KHz
1000/7.07 KHz

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

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Analog Electronics
Class B amplifier is biased

None of these
 just at cut-off.
 at midpoint of load line.
 nearly twice cut-off.

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MORE MCQ ON Analog Electronics

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