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Analog Electronics

Analog Electronics
Barrier potential at the temperature (25°C) is 0.7 V, its value at 125°C is

  0.3 V.
  0.9 V.
  0.5 V.
  0.7 V.

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Analog Electronics
LC oscillators are used for produce a waveform with frequency ranging from

 100 KHz to 500 MHz
 1MHz to 100 GHz
 1 KHz to 1 MHz
 1MHz to 500 MHz

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

 Conducting
 Doping
 Insulating
None of these

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Analog Electronics
Three difference Q points are shown on a load line. The upper Q point represents the

 intermediate current gain.
 cutoff point.
 minimum current gain.
  maximum current gain.

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Analog Electronics
Avalanche breakdown in a diode occurs when

  forward electric current exceeds certain value.
None of these
  potential barrier is reduced to zero.
  reverse bias exceeds a certain value.

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Analog Electronics
The Barkhausen criterion for an oscillator

 The phase of a feedback signal with respect to input should be 0° or 360°
 Loop gain should be unity
 Loop gain should be less than unity
 Both A and C

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