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Analog Electronics

Analog Electronics
For Germanium pn junction, the maximum value of barrier potential is

 0.7V
 1.6V
 1.5V
 0.3V

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Analog Electronics
The DC electric current gain in common collector configuration is given by

  β.
  α - 1.
  β + 1.
  α.

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Analog Electronics
An npn BJT has gm=38mA/v, cµ =10¯14 F, cπ =10¯13F and DC current gain β0=90.For this transistor fT & fβ are

fT =1.64 x 108 Hz & fβ = 1.47 x 1010 Hz
fT =1.47 x 1010 Hz & fβ = 1.33 x 1012 Hz
fT =1.47 x 1010 Hz & fβ = 1.64 x 108 Hz
fT =1.33 x 1012 Hz & fβ = 1.47 x 1010 Hz

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Analog Electronics
The leakage electric current of a pn junction is caused by

  heat energy.
  majority carriers.
  chemical energy.
  barrier potential.

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Analog Electronics
CMOS devices use

  DMOS devices.
  complementary E - MOSFETs.
  bipolar transistors .
  class A operation.

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Analog Electronics
The input stage of an op amp is usually a

  CE amplifier.
  differential amp.
  class B push-pull amplifier.
  swamped amplifier.

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