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Induction Motor Interview Questions with Answers | Part-1

What is Diode?

What is Diode? And How it works?


What is Diode?
What is Diode?

  • Diode is semiconductor electronic component which allows the flow of current in one direction.

  • Diode is widely used in any electronic circuit, such as in many power electronics device.

  • Certain arrangement of diode is converted AC to Pulsating DC which known as rectifier.

  • Diode is considered in passive element and it's voltage to current relation is non linear.

Symbol of diode


Symbol of Diode
Symbol of Diode


  • This image shows simple p-n junction diode. Diode is act as like a switch.

  • This diode made by doping process of p type semiconductor and n type semiconductor.

  • If anode is connected to the positive charge of supply and cathode is connected to the negative charge of supply than diode is said to be in forward bias.

  • If cathode is connected to the negative charge of supply and anode is connected to the positive charge of supply than diode is said to be in reverse bias.


Application of Diode



  • As a switch in power electronics equipment
  • Power controlling
  • Half wave rectifier
  • Full wave rectifier
  • In signal adding process
  • In signal detection process
  • In size controlling of signal
  • Etc......

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