diodes-and-applications electronics question and answers -Page 7

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Diodes and Applications problems

1. A rectifying diode can change ac voltage to dc voltage.
Options
A. True
B. False

Correct Answer: True

2. The positive lead of a diode is the cathode.
Options
A. True
B. False

Correct Answer: False

3. A reverse biased diode will act as an open switch.
Options
A. True
B. False

Correct Answer: True

4. Doping semiconductive material is the process of putting a small amount of pentavalent or trivalent atoms in with tetravalent atoms.
Options
A. True
B. False

Correct Answer: True

5. The barrier potential is the small difference of potential created by positive and negative ions on either side of the depletion region.
Options
A. True
B. False

Correct Answer: True

6. If a bridge rectifier is used, it is not necessary to use a transformer.
Options
A. True
B. False

Correct Answer: True

7. A common problem with rectifiers is open diodes.
Options
A. True
B. False

Correct Answer: True

8. Reverse biasing a pn junction allows the flow of majority current.
Options
A. True
B. False

Correct Answer: False

9. Breakdown voltage and peak inverse voltage are the same.
Options
A. True
B. False

Correct Answer: True

10. A diode can be tested with an ohmmeter.
Options
A. True
B. False

Correct Answer: True

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