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Analog Electronics

Analog Electronics
Which of the following is Pentavalent impurity?

 boron
 indium
 gallium
 antimony

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Analog Electronics
Which are the mobile charge carriers present in semiconductor diode ?

 Electrons
 Neutrons
 Both A & B
 Holes

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Analog Electronics
The voltage follower has a

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

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Analog Electronics
N-type extrinsic semiconductor is obtained by adding

 pentavalent impurity
 tetravalent impurity
All of these
 trivalent impurity

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Analog Electronics
In a zener diode shunt voltage regulator, the diode regulates so long as it is kept in ______________________ condition.

  loaded.
  forward.
  unloaded.
  reverse.

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

  0.9 V.
  0.5 V.
  0.3 V.
  0.7 V.

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