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Analog Electronics

Analog Electronics
If the base current is 100 mA and the current gain is 30, the emitter current is

 3 A.
  3.1 A.
 10 A.
 3.33 mA.

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Analog Electronics
A transistor series voltage regulator is called emitter follower regulator because the emitter of the pass transistor follows the ________________________ voltage.

  base.
  collector.
  output.
  input.

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Analog Electronics
The amount of time between the creation and disappearance of a free electrons is called

 bound electrons
 life time of the carriers
 drift velocity
 recombination

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Analog Electronics
A 3 - phase diode bridge rectifier is fed from a 400 V rms, 50 Hz, 3 phase AC source. If the load is purely resistive, then peak instantaneous output voltage is equal to

 400√ (2/3) V.
 400 / √ 3 V.
 400√ 2 V.
 400 V.

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Analog Electronics
When pn junction is reverse biased

All of these
 a small current flows through it because of minority carriers
 the witdh of depletion layer increases
 it offers a very high resistance

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Analog Electronics
Most of the electrons in the base of an NPN transistor flow

  into the collector.
 into the base supply.
 out of the base lead.
 into the emitter.

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MORE MCQ ON Analog Electronics

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