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Analog Electronics

Analog Electronics
Doping in a semiconductor increases which quantity

 Inductance
 Resistance
 None
 Conductance

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Analog Electronics
Assume that diode D1, D2 in figure are ideal diodes. The value of current is mcq-diagram

 1 mA.
 0 mA.
 0.5 mA.
 2 mA.

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Analog Electronics
Which of the following is the pentavalent material ?

 Neon
 Arsenic
 Gallium
 Boron

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Analog Electronics
When a reverse bias is applied to a diode, it will

  raise the potential barrier.
  none of these.
  lower the potential barrier.
  increases the majority carrier an electric current greatly.

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Analog Electronics
The feedback factor of a Wien bridge oscillator using Op-Amp is

 1
 1/4
 1/2
 1/3

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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?

 66.3 %.
 52.8 %.
 45.5 %.
 34.3 %.

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