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Analog Electronics

Analog Electronics
The collector current is 1.5 mA. If the current gain is 50, the base current is

 3 mA.
 3 µA.
 150 µA.
  30 µA.

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Analog Electronics
The fact that there are many free electrons in a transistor emitter region means the emitter is

None of these
 undoped.
 lightly doped.
  heavily doped.

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Analog Electronics
The reverse saturation electric current of a pn junction varies with temperature (T) as

  T2.
  1 / T.
  independent of T.
  T.

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Analog Electronics
The Barkhausen criterion for an oscillator

 Both A and C
 Loop gain should be unity
 The phase of a feedback signal with respect to input should be 0° or 360°
 Loop gain should be less than unity

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Analog Electronics
Which process is used for adding impurity into a pure semiconductor material ?

None of these
 Conducting
 Insulating
 Doping

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Analog Electronics
If the current gain is 100 and the collector current is 10 mA, the base current is

 10 A.
 10 µA.
 1 A.
  100 µA.

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