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
1. A silicon diode measures a low value of resistance with the meter leads in both positions. The trouble, if any, is
- the diode is open.
- the diode is shorted to ground.
- the diode is internally shorted.
- the diode is working correctly.
2. Single-element semiconductors are characterized by atoms with ____ valence electrons.
- 3
- 4
- 5
- 2
3. Under normal conditions a diode conducts current when it is
- reverse-biased.
- forward-biased.
- avalanched.
- saturated.
4. A diode conducts when it is forward-biased, and the anode is connected to the ________ through a limiting resistor.
- positive supply
- negative supply
- cathode
- anode
5. As the forward current through a silicon diode increases, the internal resistance
- increases.
- decreases.
- remains the same.
6. The movement of free electrons in a conductor is called
- voltage.
- current.
- recombination
- equilibrium.
7. For a forward-biased diode, the barrier potential ________ as temperature increases.
- decreases
- remains constant
- increases
8. The wide end arrow on a schematic indicates the ________ of a diode.
- ground
- direction of electron flow
- cathode
- anode
9. An n-type semiconductor material
- is intrinsic.
- has trivalent impurity atoms added.
- has pentavalent impurity atoms added
- requires no doping.
10. For a forward-biased diode, as temperature is ________, the forward current ________ for a given value of forward voltage.
- decreased, increases
- increased, increases
- increased, decreases
- decreased, decreases