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Analog Electronics

Analog Electronics
The reverse saturation electric current of a pn junction varies with temperature (T) as

  1 / T.
  independent of T.
  T2.
  T.

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Analog Electronics
The voltage follower has a

  small open - loop voltage gain.
  closed - loop voltage gain of unity.
  large closed - loop output impedance.
  closed - loop bandwidth of zero.

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Analog Electronics
What is the range of energy band gap of semiconductors ?

 10-15 ev
 14-15 ev
 1-3 ev
 0 ev

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Analog Electronics
What is the input impedance of a common-gate configured JFET?

  Very high.
  Low.
  High.
  Very low.

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Analog Electronics
In a MOSFET, the polarity of the inversion layer is the same as that of the

  majority carries in the substrate.
  minority carriers in the drain .
  charge on the gate electrode.
  majority carries in the source .

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Analog Electronics
What will be the result if pentavalent impurity is added to pure germanium or silicon ?

None of these
 P-type semiconductor
 N-type semiconductor
 Intrinsic semiconductor

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