Discussion
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- Question
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
Options- A. 30 pps
- B. 60 pps
- C. 90 pps
- D. 120 pps
- Correct Answer
- 60 pps
- 1. Shunting the ac component away from the load is the task of a:
Options- A. transformer
- B. filter
- C. regulator
- D. rectifier Discuss
- 2. With a half-wave rectified voltage across the load resistor, load current flows for what part of a cycle?
Options- A. 0 degrees
- B. 90 degrees
- C. 180 degrees
- D. 360 degrees Discuss
- 3. The area at the junction of p-type and n-type materials that has lost its majority carriers is called the
Options- A. barrier potential
- B. depletion region
- C. n region
- D. p region Discuss
- 4. When a diode is destroyed it has infinite impedance. When damaged by heat it will probably:
Options- A. short
- B. conduct more
- C. conduct less
- D. open Discuss
- 5. An IC regulator receives an overload; it will:
Options- A. shut down
- B. compensate for heat
- C. provide more voltage
- D. sample and adjust Discuss
- 6. The peak inverse voltage (PIV) across a nonconducting diode in a bridge rectifier equals approximately:
Options- A. half the peak secondary voltage
- B. twice the peak secondary voltage
- C. the peak value of the secondary voltage
- D. four times the peak value of the secondary voltage Discuss
- 7. A filtered full-wave rectifier voltage has a smaller ripple than does a half-wave rectifier voltage for the same load resistance and capacitor values because:
Options- A. there is a shorter time between peaks
- B. there is a longer time between peaks
- C. the larger the ripple, the better the filtering action
- D. none of the above Discuss
- 8. In a diode schematic, the anode is represented by a(n):
Options- A. triangle
- B. vertical line
- C. zig-zag line
- D. element indicator Discuss
- 9. A pn junction allows current flow when
Options- A. the p-type material is more positive than the n-type material
- B. the n-type material is more positive than the p-type material
- C. both the n-type and p-type materials have the same potential
- D. there is no potential on the n-type or p-type materials Discuss
- 10. When a diode is forward biased, the voltage across it
Options- A. is directly proportional to the current
- B. is inversely proportional to the current
- C. is directly proportional to the source voltage
- D. remains approximately the same Discuss
Diodes and Applications problems
Search Results
Correct Answer: filter
Correct Answer: 180 degrees
Correct Answer: depletion region
Correct Answer: short
Correct Answer: shut down
Correct Answer: the peak value of the secondary voltage
Correct Answer: there is a shorter time between peaks
Correct Answer: triangle
Correct Answer: the p-type material is more positive than the n-type material
Correct Answer: remains approximately the same
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