Electronic Devices and circuits Theory-Diode Applications Questions and Answers
The Diode Applications section under Electronic Devices and Circuits Theory helps you understand how diodes work in real circuits. Although it’s part of electronics theory, solving related reasoning questions and answers builds analytical skills essential for interpreting circuit behavior. Key topics include rectifiers, clippers, clampers, voltage regulators, and signal demodulators. These concepts frequently appear in GATE, DRDO, ISRO, and PSU technical exams. Practicing electronics aptitude questions with explanations improves your ability to analyze, calculate, and troubleshoot circuit-based problems efficiently. Start exploring diode application questions with answers to master the fundamentals of semiconductor devices and strengthen your problem-solving approach.
Electronic Devices and circuits Theory-Diode Applications
11. Which statement best describes an insulator?
- A material with many free electrons.
- A material doped to have some free electrons.
- A material with few free electrons.
- No description fits.
12. Effectively, how many valence electrons are there in each atom within a silicon crystal?
- 2
- 4
- 8
- 16
13. The boundary between p-type material and n-type material is called
- a diode.
- a reverse-biased diode.
- a pn junction.
- a forward-biased diode.
14. You have an unknown type of diode in a circuit. You measure the voltage across it and find it to be 0.3 V. The diode might be
- a silicon diode.
- a germanium diode.
- a forward-biased silicon diode.
- a reverse-biased germanium diode.
15. An ideal diode presents a(n) ________ when reversed-biased and a(n) ________ when forward-biased.
- open, short
- short, open
- open, open
- short, short
16. A reverse-biased diode has the ________ connected to the positive side of the source, and the ________ connected to the negative side of the source.
- cathode, anode
- cathode, base
- base, anode
- anode, cathode
17. What types of impurity atoms are added to increase the number of conduction-band electrons in intrinsic silicon?
- bivalent
- octavalent
- pentavalent
- trivalent
18. What factor(s) do(es) the barrier potential of a pn junction depend on?
- type of semiconductive material
- the amount of doping
- the temperature
- all of the above
20. Reverse breakdown is a condition in which a diode
- is subjected to a large reverse voltage.
- is reverse-biased and there is a small leakage current.
- has no current flowing at all.
- is heated up by large amounts of current in the forward direction.