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Analog Electronics

Analog Electronics
Which process is used for adding impurity into a pure semiconductor material ?

 Insulating
 Doping
 Conducting
None of these

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Analog Electronics
When the drain saturation electric current is less than IDSS a JFET acts like a

  current source.
  BJT.
  battery.
  resistor.

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Analog Electronics
In modern the MOSFET, the material used for the gate is

  high - purity silicon.
  high - purity silica.
  heavily doped poly crystalline silicon.
  epitaxially grown silicon.

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Analog Electronics
The opamp can amplify

  both AC and DC signals.
  neither AC not DC signals.
  DC signals only.
  AC signals only.

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Analog Electronics
In a MOSFET, the polarity of the inversion layer is the same as that of the

  majority carries in the substrate.
  charge on the gate electrode.
  minority carriers in the drain .
  majority carries in the source .

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Analog Electronics
For a JEFT, when VDS is increased beyond the pinch-off voltage, the drain electric current

  decreases.
  remains constant.
  first increase and then decreased.
  increased.

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