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Analog Electronics

Analog Electronics
Which are the mobile charge carriers present in semiconductor diode ?

 Holes
 Both A & B
 Neutrons
 Electrons

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Analog Electronics
In modern the MOSFET, the material used for the gate is

  high - purity silicon.
  epitaxially grown silicon.
  high - purity silica.
  heavily doped poly crystalline silicon.

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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 =1.33 x 1012 Hz & fβ = 1.47 x 1010 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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Analog Electronics
The base-emitter voltage of an ideal transistor is

  0 V.
 0.3 V.
 1 V.
 0.7 V.

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Analog Electronics
Ignoring the bulk resistance of the collector diode, the collector-emitter saturation voltage is

  0.
 a few tenths of a volt.
 1 V.
 supply voltage.

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Analog Electronics
When the current gain increases from 50 to 300 in an emitter-biased circuit, the collector current

 decreases by a factor of 6.
  remains almost the same.
 increases by a factor of 6.
 is zero.

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