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Analog Electronics

Analog Electronics
The current gain of a BJT is

gm rπ
gm /rπ
gm r0
gm / r0

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Analog Electronics
The properties of JFET resemble those of

  PNP transistors.
  UJT.
  NPN transistors.
  thermionic valves.

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Analog Electronics
If the series resistance increases in an unloaded zener regulator, the zener current

  decreases.
  stays the same.
  equals the voltage divided by the resistance.
  increases.

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Analog Electronics
The cascade amplifier is a multistage configuration of

CC-CB
CE-CB
CB-CC
CE-CC

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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))
 f = 1 / (2π RC√6)
 f = 1 / (2π√RC)
None of these

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Analog Electronics
What will happen if doping of an intrinsic semiconductor with pentavalent impurity atom ?

 Fermi level fall
None of these
 Fermi level not change
 Fermi level raises

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