Electronic Devices and Circuit Theory- Semiconductor Diodes Questions and Answers
Semiconductor Diodes are the foundation of modern electronic circuits, making this a critical topic for exams like GATE, DRDO, and BEL recruitment tests. In this section on Semiconductor Diodes questions with answers, you’ll explore PN junction behavior, biasing, IV characteristics, and diode applications such as rectifiers and clippers. Practicing these electronics aptitude questions with explanations helps you master semiconductor properties and understand real-world circuit applications. Whether you’re preparing for government technical exams or electronics placements, these questions will build your conceptual clarity and analytical approach toward diode-based circuits. Strengthen your fundamentals through consistent electronics MCQ practice and detailed problem-solving.
Electronic Devices and Circuit Theory- Semiconductor Diodes
21. What is the value of the transition capacitance for a silicon diode when VD = 0? (Choose the best answer.)
- 1 pF
- 3 pF
- 5 pF
- 10 pF
22. Which of the following ratings is true?
- Si diodes have higher PIV and narrower temperature ranges than Ge diodes.
- Si diodes have higher PIV and wider temperature ranges than Ge diodes.
- Si diodes have lower PIV and narrower temperature ranges than Ge diodes.
- Si diodes have lower PIV and wider temperature ranges than Ge diodes.
23. The ideal diode is a(n) ________ circuit in the region of nonconduction.
- open
- short
24. Which capacitance dominates in the forward-bias region?
- Diffusion
- Transition
- Depletion
- None of the above
25. In what state is a silicon diode if the voltage drop across it is about 0.7 V?
- No bias
- Forward bias
- Reverse bias
- Zener region
26. What is the ratio of the capacitive reactance XCS to the input resistance RI of the input RC circuit of a single-stage BJT amplifier at the low-frequency cutoff?
- 0.25
- 0.50
- 0.75
- 1.0