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Home ‣ Electronics ‣ Diodes and Applications Comments
- Question
Why is heat produced in a diode?
Options- A. due to current passing through the diode
- B. due to voltage across the diode
- C. due to the power rating of the diode
- D. due to the PN junction of the diode
- Correct Answer
- due to current passing through the diode
- 1. At any given time in an intrinsic piece of semiconductor material at room temperature
Options- A. electrons drift randomly
- B. recombination occurs
- C. holes are created
- D. All of the above Discuss
- 2. The dc current through each diode in a bridge rectifier equals:
Options- A. the load current
- B. half the dc load current
- C. twice the dc load current
- D. one-fourth the dc load current Discuss
- 3. In a power supply diagram, which block indicates a smooth dc output?
Options- A. transformer
- B. filter
- C. rectifier
- D. regulator Discuss
- 4. Since diodes are destroyed by excessive current, circuits must have:
Options- A. higher voltage sources
- B. current limiting resistors
- C. more dopants
- D. higher current sources Discuss
- 5. What is the peak output voltage for this half-wave rectifier?
Options- A. 1 V
- B. 7.8 V
- C. 10.9 V
- D. 15.6 V Discuss
- 6. If a 169.7 V half-wave peak has an average voltage of 54 V, what is the average of two full-wave peaks?
Options- A. 119.9 V
- B. 108.0 V
- C. 115.7 V
- D. 339.4 V Discuss
- 7. List three diode packages:
Options- A. clip package, DIP, small current package
- B. DIP, small current package, large current package
- C. small current package, large current package, and SIP
- D. small current package, large current package, clip package Discuss
- 8. When checking a diode, low resistance readings both ways indicate the diode is:
Options- A. open
- B. satisfactory
- C. faulty
- D. not the problem Discuss
- 9. With a 12 V supply, a silicon diode, and a 370-ohm resistor in series, what voltage will be dropped across the diode?
Options- A. 0.3 V
- B. 0.7 V
- C. 0.9 V
- D. 1.4 V Discuss
- 10. A characteristic curve is the result of a current versus voltage plot of diode activity, which begins at the:
Options- A. 3rd quadrant
- B. current plot
- C. graph origin
- D. voltage plot Discuss
Diodes and Applications problems
Search Results
Correct Answer: All of the above
Correct Answer: the load current
Correct Answer: regulator
Correct Answer: current limiting resistors
Correct Answer: 7.8 V
Correct Answer: 108.0 V
Correct Answer: small current package, large current package, clip package
Correct Answer: faulty
Correct Answer: 0.7 V
Correct Answer: graph origin
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