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Analog Electronics

Analog Electronics
An Op-Amp comparator circuit employs

 no feedback.
 both B and C.
 -ve feedback.
 +ve feedback.

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Analog Electronics
The number of valence electrons in silicon atom are :

 4
 3
 1
 2

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Analog Electronics
Colpitts oscillator is also called as

 Tank circuit oscillator
 LC oscillator
 Resonant circuit oscillator
All of these

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Analog Electronics
A D - MOSFET is considered to be a

  current controlled device.
  high - power switch.
  normally on device.
  normally off device.

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Analog Electronics
Which of the following is a semiconductors material ?

 All the above
 Ge
 Si
 GaAs

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

 All the above
 GaAs
 Si
 Ge

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