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Analog Electronics

Analog Electronics
If the base resistor has zero resistance, the transistor will probably be

None of these
 saturated.
  destroyed.
 in cutoff.

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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 = 1.33 x 1012 Hz
fT =1.64 x 108 Hz & fβ = 1.47 x 1010 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
Relaxation Voltage controlled oscillators are used to generate

 Sinusoidal wave
 Triangular wave
 Both B and C
 Sawtooth wave

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Analog Electronics
The emitter electric current in a junction with normal bias

  is equal to the sum of IB and IC.
  is equal to ICBO.
  changes greatly by a small changes in collector bias voltage.
  is almost equal to the base current.

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Analog Electronics
With both bases grounded, the only offset that produces an error is the

  input offset current.
  β.
  input offset voltage.
  input bias current.

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

 During Manufacturing
 During Forward bias
 During Reverse bias
 During Heating

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