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Analog Electronics

Analog Electronics
The barrier potential across each silicon depletion layer is

 0.3 V.
  0.7 V.
 0 V.
 1 V.

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

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Analog Electronics
A common - mode signal is applied to

  the non - inverting input.
  the top of the tail resistor.
  the inverting input.
  both inputs.

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Analog Electronics
Which is the conversion of current done by diode ?

None of these
 DC to AC
 DC to DC
 AC to DC

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Analog Electronics
The softness factor for soft recovery and fast recovery diodes are respectively

  1,
 1, >1.
 1, 1.

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Analog Electronics
In a properly biased NPN transistor most of the electrons from the emitter

  recombine in the emitter its self.
  pass through the base to the collector.
  recombine with holes in the base .
  are stopped by the junction barrier.

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