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Analog Electronics

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

  0.7 V.
  0.5 V.
  0.3 V.
  0.9 V.

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Analog Electronics
The junction capacitance of linearly graded junction varies with the applied reverse bias, VR as

  (VR)- 1.
  (VR)- 1/2.
  (VR)- 1/3.
  (VR)1/2.

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Analog Electronics
In n type semiconductor elements of which group of periodic table is added as dopant

 group 5.
 group 2.
 group 4.
 group 3.

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Analog Electronics
Example of donor atom is

 Antimony
 Silicon
 Germinium
 Both A and B

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Analog Electronics
The expression for frequency of oscillations of a RC phase shift oscillator is

 f = 1 / (2π√R(C1 + C2))
None of these
 f = 1 / (2π RC√6)
 f = 1 / (2π√RC)

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Analog Electronics
Asource follower using an FET usually has a voltage gain which is

Exactly unity but negative
About -10
Slightly less than unity but positive
Greater than +100

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