Analog Electronics
The trapped energy of an inductive load can be feed back to the input supply through a diode known as

  Feed back diode.
 Zener diode.
 None of these.
 Powe diode.

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Analog Electronics
For transistor action

  all of these.
  the emitter should be heavily doped.
  the base region must be very thin and lightly doped.
  Je must be forward biased and Jc should be reverse biased.

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Analog Electronics
For an NPN transistor in normal bias

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

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