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Analog Electronics

Analog Electronics
Which of following is the point of reference JFET?

  Gate.
  Source.
  Drain.
  None of above.

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Analog Electronics
A voltage regulator is a circuit which

  maintains constant DC output voltage inspite of the fluctu
None of these
  smoothed the AC variation in DC output voltage.
  converts the AC voltage to DC voltage.

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Analog Electronics
In a differential amplifier, the CMRR is limited mostly by the

  supply voltages .
  CMRR of the opamp.
  gain - bandwidth product.
  tolerance of the resistors.

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Analog Electronics
When a reverse bias is applied to gate of JFET the depletion region width

None of these
  is wider near the source and tapers near the drain.
  is uniform in the channel.
  is wider near the drain and tapers near source.

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Analog Electronics
If the base resistor is open, what is the collect current?

 10 mA.
 1 mA.
  0 mA.
 2 mA.

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Analog Electronics
The base of an npn transistor is thin and

  lightly doped.
 metallic.
 doped by a pentavalent material.
 heavily doped.

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