PN Junction Diode: Biasing and Characteristics
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Questions and Answers

What happens to the base-emitter junction when a voltage is applied to it?

  • It becomes zero-biased
  • It remains unchanged
  • It becomes reverse-biased
  • It becomes forward-biased (correct)

What is the primary function of a transistor in the active region?

  • To switch the output current
  • To filter the output current
  • To regulate the output voltage
  • To amplify the output current (correct)

What is the state of the transistor in the cutoff region?

  • It is in the 'active' state
  • It is in the 'off' state (correct)
  • It is in the 'saturation' state
  • It is in the 'on' state

What is the purpose of the thin and lightly doped base region?

<p>To prevent recombination of holes and electrons (B)</p> Signup and view all the answers

What is the nature of the base-collector junction in the active region?

<p>Reverse-biased (D)</p> Signup and view all the answers

What is the application of NPN transistors in linear voltage regulators?

<p>Voltage regulation (B)</p> Signup and view all the answers

What is the state of the transistor in the saturation region?

<p>Both junctions are forward-biased (A)</p> Signup and view all the answers

What is the purpose of the emitter region in an NPN transistor?

<p>To provide a path for holes to flow from the emitter to the base (D)</p> Signup and view all the answers

What is the significance of the electric field created by the reverse-biased base-collector junction?

<p>It repels holes away from the base (B)</p> Signup and view all the answers

What is the application of NPN transistors in push-pull amplifiers?

<p>Power amplification (C)</p> Signup and view all the answers

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