Semiconductor Principles Questions and Answers
The Semiconductor Principles form the foundation of modern electronics, explaining how materials like silicon and germanium conduct electricity. This section includes semiconductor aptitude questions and answers with explanations, focusing on topics like energy bands, doping, charge carriers, and PN junctions. Designed for aspirants preparing for GATE, ISRO, or DRDO exams, these questions help in understanding theoretical and practical aspects of semiconductors. Practice these semiconductor principle questions with answers to strengthen your grasp of electronics fundamentals and prepare effectively for competitive technical exams.
Semiconductor Principles
Showing 10 of
63 questions
11. Which material may also be considered a semiconductor element?
- carbon
- ceramic
- mica
- argon
12. In "p" type material, minority carriers would be:
- holes
- dopants
- slower
- electrons
13. What can a semiconductor sense?
- magnetism
- temperature
- pressure
- all of the above
14. When an electron jumps from the valence shell to the conduction band, it leaves a gap. What is this gap called?
- energy gap
- hole
- electron-hole pair
- recombination
15. Forward bias of a silicon P-N junction will produce a barrier voltage of approximately how many volts?
- 0.2
- 0.3
- 0.7
- 0.8
16. Which semiconductor material is made from coal ash?
- germanium
- silicon
- tin
- carbon
17. When and who discovered that more than one transistor could be constructed on a single piece of semiconductor material:
- 1949, William Schockley
- 1955, Walter Bratten
- 1959, Robert Noyce
- 1960, John Bardeen
18. When is a P-N junction formed?
- in a depletion region
- in a large reverse biased region
- the point at which two opposite doped materials come together
- whenever there is a forward voltage drop
19. A P-N junction mimics a closed switch when it:
- has a low junction resistance
- is reverse biased
- cannot overcome its barrier voltage
- has a wide depletion region
20. Solid state devices were first manufactured during:
- World War 2
- 1904
- 1907
- 1960