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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

 2 mA.
 1 mA.
 0.5 mA.
 0 mA.

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Analog Electronics
The voltage gain of a loaded differential amp is

  smaller than the unloaded voltage gain.
  large than the unloaded voltage gain.
  equal to RC / re.
  impossible to determine.

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Analog Electronics
The universal bias stabilization circuit is the most popular because

  IC does not depend on transistor characteristic.
  its β sensitivity is low .
  IC equals to IE.
  voltage divider is heavily loaded by transistor base .

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Analog Electronics
When the Q point moves along the load line, VCE decreases when the collector current

None of these
 stays the same.
 decreases.
  increases.

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Analog Electronics
What is the range of energy band gap of semiconductors ?

 10-15 ev
 0 ev
 14-15 ev
 1-3 ev

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Analog Electronics
The current gain of a pnp transistor is

 the negative of the npn current gain.
 the collector current divided by the emitter current.
 near zero.
 the ratio of collector current to emitter current.

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