Diodes and Applications Questions and Answers
Diodes and their applications play a vital role in electronics, especially in rectification, signal clipping, and voltage regulation circuits. This topic offers electronics aptitude questions and answers with explanations on diode behavior, characteristics, and real-world applications. Perfect for GATE, BEL, and ISRO aspirants, these questions test your analytical understanding of semiconductor diodes. Practice these Diodes and Applications questions with answers to build a solid foundation in analog electronics and enhance your problem-solving ability for engineering exams and interviews.
Diodes and Applications
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64 questions
21. When checking a diode, low resistance readings both ways indicate the diode is:
- open
- satisfactory
- faulty
- not the problem
22. In a diode schematic, the anode is represented by a(n):
- triangle
- vertical line
- zig-zag line
- element indicator
23. An IC regulator receives an overload; it will:
- shut down
- compensate for heat
- provide more voltage
- sample and adjust
24. With full-wave rectification, current through the load resistor must be:
- in opposite directions
- to the external load
- from the reverse biased diode
- in the same direction
25. A characteristic curve is the result of a current versus voltage plot of diode activity, which begins at the:
- 3rd quadrant
- current plot
- graph origin
- voltage plot
26. Rectifier output polarity depends upon:
- cycles of input
- capacitor polarity
- half or full wave
- diode installation
27. If the frequency of the applied ac signal to a half-wave rectifier is 60 Hz, the frequency of the pulsating dc output will be
- 30 pps
- 60 pps
- 90 pps
- 120 pps
28. Thermal shutdown occurs in an IC regulator if:
- power dissipation is too high
- internal temperature is too high
- current through the device is too high
- load resistance increases
29. The conduction band is closest to the valence band in
- semiconductors
- conductors
- insulators
- The distance is the same for all of the above.
30. With a half-wave rectified voltage across the load resistor, load current flows for what part of a cycle?
- 0 degrees
- 90 degrees
- 180 degrees
- 360 degrees