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Analog Electronics

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

 1 V.
 0 V.
 0.3 V.
  0.7 V.

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Analog Electronics
The following relationship between α and β are correct except

  β = α / (1 - α).
  1 - α = 1 / (1 + β).
  α = β / (1 + β).
  α = β / (1 - β).

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Analog Electronics
A JFET has disadvantage of

  being noisy.
  having low input impedance.
  having small gain-bandwidth product.
  possessing positive temperature coefficient.

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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 =1.64 x 108 Hz & fβ = 1.47 x 1010 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

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Analog Electronics
Depletion region of a p-n junction is formed

 During Manufacturing
 During Forward bias
 During Heating
 During Reverse bias

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Analog Electronics
Which is the third region where no charge carriers are present when n-type and p-type are attached together ?

None of these
 Depletion region
 Reversed region
 Forward region

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