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Analog Electronics

Analog Electronics
In a pnp transistor, the major carriers in the emitter are

 free electrons.
 both.
 neither.
  holes.

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Analog Electronics
When testing an npn transistor using an ohmmeter, the collector-emitter resistance will be low when

 the collector is positive in respect to the emitter.
  the transistor is defective.
 the transistor is normal.
 the emitter is positive in respect to the collector.

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Analog Electronics
Increasing the collector supply voltage will increase

None of these
 base current.
 emitter current.
 collector current.

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Analog Electronics
When pn junction is reverse biased

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

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Analog Electronics
The Barkhausen criterion for an oscillator

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

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Analog Electronics
At the unity-gain frequency, the open-loop voltage gain is

  zero.
  AV(mid).
  1.
  very large

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