Question

Photodiode characteristics viva questions?

Answer 1

Here are few probable Viva question on Photo diode .
1. Draw the symbol of photo diode ?
2. what's difference in normal diode & photo diode ?
3. Principle of Photo diode ?
4. V-I characteristic of Photo diode ?
5. 2 general application of Photo diode ?

Good Luck!!

Answer 2

• What is a photo diode?
• Name any two photo diode materials.
• What is Dark current?
• Which device is used to measure current in photo diode and why?
• Why are photo diodes operated in reverse biased condition?        
• What are operational modes of photo diode?
• What is intrinsic excitation?
• What is extrinsic excitation?
• Name two advantages of photo diode.
• What are the disadvantages of photo diode?