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Analog Electronics

Analog Electronics
Which of the following is a semiconductors material ?

 All the above
 GaAs
 Ge
 Si

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Analog Electronics
Why holes are not created in a metal ?

 The conduction band and valance band are overlapped
None of these
 The forbidden band is missing
 Both 1 & 2

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Analog Electronics
When the JFET is no longer able to control the current, this point is called the

  breakdown region.
  pinch-off region.
  depletion region.
  saturated point.

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

 Insulating
None of these
 Doping
 Conducting

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Analog Electronics
The DC electric current gain in common collector configuration is given by

  α.
  α - 1.
  β + 1.
  β.

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Analog Electronics
Which material behave like perfect insulators at low temperatures & conductor at higher temperature ?

 Ge
 All the above
 Si
 GaAs

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