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Analog Electronics

Analog Electronics
The properties of JFET resemble those of

  thermionic valves.
  UJT.
  NPN transistors.
  PNP transistors.

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Analog Electronics
A depletion MOSFET differs from a JFET in the sense that it has no

  substrate.
  gate.
  channel.
  p - n junction.

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Analog Electronics
In a transistor leakage current mainly depends on

Rating of transistor
Temperature
Doping of base
Size of emitter

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Analog Electronics
Silicon and Germanium are ________ elements.

 pentavalant
 tetravalant
 hexavalant
 trivalant

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Analog Electronics
Class AB operation is often used in power large signal) amplifiers in order to

Reducing collector dissipation
Get maximum efficiency
Overcome a crossover distortion
Remove even harmonics

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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 =1.33 x 1012 Hz & fβ = 1.47 x 1010 Hz
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

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