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Analog Electronics

Analog Electronics
Which impurity is added into semiconductor to increase its conductivity ?

 extrinsic
 doping
 intrinsic
None of these

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Analog Electronics
The input offset electric current is usually

  less than the input offset voltage.
  equal to zero.
  less than the input bias current.
  unimportant when a base resistor is used.

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Analog Electronics
The input voltage to an emitter follower is usually

 equal to the supply voltage.
 greater than the generator voltage.
 equal to the generator voltage.
  less than the generator voltage.

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Analog Electronics
In a common emitter, unbypassed resister provides

current series feedback
positive current feedback
negative voltage feedback
voltage shunt feedback

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Analog Electronics
When testing an npn transistor using an ohmmeter, the collector-emitter resistance will be low when

 the transistor is normal.
 the emitter is positive in respect to the collector.
  the transistor is defective.
 the collector is positive in respect to the emitter.

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Analog Electronics
Conduction electrons have more mobility than holes because they

 are free
None of these
 need less energy to move them
 have negative charge

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