Semiconductor Interview Questions & Answers

Question 1. What Do Diodes Do?

Answer :

Block current in one direction while letting current flow in another direction.

Question 2. Where Must Doping Be Added Within A Semiconductor To Alter Their Conductivity?

Answer :

Their crystal lattice.

Question 3. What Is The Value Of Kt At Room Temperature?

Answer :

25.6 meV

Question 4. Which Semiconductor Has A Direct Bandgap?

Answer :

Gallium arsenide has a direct bandgap.

Question 5. What Are The Four Elements In Cigs?

Answer :

1. Copper
2. indium
3. gallium
4. selenium

Question 6. How To Use Resistors?

Answer :

Resistors are typically used to control volume in electronics.

Question 7. What Is An Exciton?

Answer :

An electron-hole pair is called an exciton.

Question 8. What Type Of Semiconductor Do You Get If You Dope It With Boron?

Answer :

A p-type semiconductor.

Question 9. What Is A Iii-v Semiconductor?

Answer :

A semiconductor made from elements in columns III and V of the periodic table.

Question 10. What Mathematical Formula Most Accurately Predicts The Fermi Level Of A Semiconductor?

Answer :

Fermi-Dirac distribution.

Question 11. What Are The Four Terminals Of An Fet Transistor?

Answer :

1. Source
2. gate
3. drain
4. body

Question 12. Can Pure Silicon Alone Be Used To Make A Semiconductor?

Answer :

No. It needs impurities to become semi-conductive.

Question 13. What Does The Acronym Igbt Stand For?

Answer :

Insulated gate bipolar transistor.

Question 14. What Are The Components Of A Mosfet?

Answer :

1. Source
2. drain
3. gate

Question 15. What Does Cmos Stand For?

Answer :

Complementary metal-oxide-semiconductor.

Question 16. What Are The Two Bands In Which An Electron Can Reside?

Answer :

Valence and conduction

Question 17. What Is The Reason For Reducing Drain Doping In A Metal-oxide Semiconductor Device Design?

Answer :

To improve breakdown voltage.

Question 18. What Is A Semiconductor?

Answer :

The combination of a conductive material, and an insulator.

Question 19. What Does 'doping' Do?

Answer :

Changes a semiconductor's behavior.

Question 20. When Silicon Has Been Doped, What Does This Mean?

Answer :

Impurities have been added that alter its electronic properties in a controllable way.

Question 21. What Is Doping?

Answer :

The process of deliberately adding impurities to affect conductivity is called Doping.

Question 22. Why Are Semiconductors Important?

Answer :

They successfully replaced vacuum tubes as the primary way to compute data.

Question 23. What Does Led Stand For?

Answer :

Light Emitting Diode

Question 24. What Does Mosfet Stand For?

Answer :

Metal–oxide–semiconductor field-effect transistor.

Question 25. What Does Bjt Stand For?

Answer :

Bipolar junction transistor.