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Analog Electronics

Analog Electronics
What is the majority carriers in "N" type material ?

None of these
 Protons
 Holes
 Electrons

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Analog Electronics
How will be the extrinsic semiconductor act at room temperature ?

 Medium Conductor
None of these
 Poor conductor
 Conductor

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Analog Electronics
A zener diode voltage regulator has load requirement of 12 V and 2 Amp. The zener diode's minimum current requirement is 0.2 A. The minimum voltage at input is 24 V. What is maximum efficiency of circuit?

 52.8 %.
 45.5 %.
 66.3 %.
 34.3 %.

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Analog Electronics
An ideal voltage regulator has a voltage regulation of

  1.
  0.
  100.
  50.

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Analog Electronics
A zener diode

  has a constant voltage in the breakdown region.
  is a battery.
  is forward biased.
  has a barrier potential of 1 V.

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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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