Below are the answers key for the Multiple Choice Questions (Quiz) in pnpn and Other Devices from the book Electronic Devices and Circuit Theory 10th Edition by Robert L. Boylestad.
Answer Key:
1. C. 4
2. D. All of the above
3. C. 4
4. A. SCR
5. B. About 50 kHz
6. C. Gate
7. D. 100 kΩ or more
8. A. npn, pnp
9. C. Both npn and pnp
10. B. 10 µs to 25 µs
11. A. 5 µs to 30 µs
12. A. SCR
13. D. All of the above
14. C. 4
15. A. 1.5 mA
16. D. All of the above
17. D. All of the above
18. B. SCS
19. A. negative, positive
20. B. False
21. B. GTO
22. B. GTO
23. C. GTO
24. A. 3 A
25. D. 2
26. D. DIAC
27. C. Triac
28. B. False
29. C. Unijunction transistor
30. A. 50 Ω to 5 kΩ
31. C. AND
32. A. 4
33. B. 3
34. B. 16.25 kΩ
FILL-IN-THE-BLANKS
1. D. All of the above
2. A. thyristors
3. D. All of the above
4. C. 10 MW, 2000 A, 1800 V
5. B. anode, gate, and cathode
6. A. 0.01 Ω, 0.1 Ω
7. A. 0.1 μs to 1 μs
8. C. both current interruption and forced commutation
9. D. 100 mA, 20 mA
10. B. 90º
11. A. anode, anode gate, cathode gate, and cathode
12. C. higher, lower
13. D. either on or off
14. B. negative, positive
15. A. larger than
16. C. diac
17. D. All of the above
18. B. base
19. A. An increase, an increase
20. D. All of the above
21. C. both an infrared LED and a photodetector
22. B. decreases
23. D. All of the above
24. A. lower than
25. C. higher than
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