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Analog Electronics

Analog Electronics
Which of the following is Pentavalent impurity?

 antimony
 boron
 indium
 gallium

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Analog Electronics
The Barkhausen criterion for an oscillator

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

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Analog Electronics
If the base supply voltage increase, the Q point moves

 nowhere.
 down.
 off the load line.
  up.

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Analog Electronics
Most small - signal E - MOSFETs are found in

  disk drives.
  integrated circuit.
  discrete circuits.
  heavy - current applications.

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Analog Electronics
The β of a transistor may be determined directly from the curve plotted between

  VCE and IE for constant IB.
  VBE and IE for constant VCE.
  VCE and IC for constant IE.
  VCE and IC for constant IB.

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Analog Electronics
The main job of a voltage regulator is to provide a nearly __________________ output voltage.

  smooth.
  constant.
  sinusoidal.
  fluctuating.

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