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Analog Electronics

Analog Electronics
The majority carrier in P-type extrinsic semiconductor material is

 Both Holes and Electrons
 Holes
None of these
 Electrons

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Analog Electronics
The base-emitter voltage of the second approximation is

 0 V.
 1 V.
  0.7 V.
 0.3 V.

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Analog Electronics
An amplifier without feedback has a voltage gain of 50,input resistance os 1 KΩ & Output resistance of 2.5KΩ.The input resistance of the current shunt negative feedback amplifier using the above amplifier with a feedbacik factor of 0.2 is

5KΩ
11KΩ
1/5KΩ
1/11KΩ

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Analog Electronics
Why holes are not created in a metal ?

None of these
 The forbidden band is missing
 Both 1 & 2
 The conduction band and valance band are overlapped

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Analog Electronics
Which of following is not an essential element of a DC power supply?

  Voltage amplifier.
  Voltage regulator.
  Filter.
  Rectifier.

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Analog Electronics
Which impurity is added into semiconductor to increase its conductivity ?

 extrinsic
None of these
 intrinsic
 doping

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