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Analog Electronics

Analog Electronics
Energy gap of semiconductor is approx

 1 eV.
 5 - 8 eV.
 0 eV.
 > 8 eV .

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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

1/5KΩ
5KΩ
11KΩ
1/11KΩ

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Analog Electronics
If (211)X = (152)8, then the value of base x is

 9
 6
 7
 5

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Analog Electronics
The β of a transistor is the ratio of the

 base current to collector current.
 collect current to emitter current.
 emitter current to collector current.
  collect current to base current.

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Analog Electronics
Which is the factor on which total number of electrons in an atom depends ?

 atomic size
 atomic weight
None of these
 atomic number

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Analog Electronics
Which of the following is expected to have highest input impedance?

  CE bipolar transistor.
  MOSFET.
  Common collector bipolar transistor
  JEFT amplifier.

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