Analog Electronics
The base - emitter voltage is usually

 none of these.
 equal to the base supply voltage.
 more than the base supply voltage.
  less than the base supply voltage.

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Analog Electronics
In all base driver amplifiers

ac collector voltage is 180° out of phase with ac base voltage
None of these
ac emitter voltage is 180° out of phase with ac base voltage
ac collector voltage is in phase with ac base voltage

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Analog Electronics
For an NPN transistor in normal bias

  only majority carriers cross the collector junction.
  only holes cross the collector junction.
  Je is forward biased and Jc is reverse biased.
  the emitter junction has high resistance.

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