Below are the answers key for the Textbook Assignment: Chapter 2, "Inductance" from the Module 2 — Introduction to Alternating Current and Transformers in Navy Electricity and Electronics Training Series (NEETS) . Make sure to familiarize each and every questions to increase the chance of passing the ECE Board Exam.
1. C. Changes in current
2. B. H
3. D. Henry
4. B. 2.0 henries
5. D. Inertia
6. D. Electromotive
7. A. They are dislodged from orbit
8. D. All of these
9. D. Counter electromotive force
10. C. It opposes either a rise or a fall in current
11. B. The left-hand rule for generators
12. A. conductor
13. B. The collapsing magnetic field
14. A. An ac circuit
15. A. By core type
16. C. soft iron
17. B. To support the windings
18. C. Conductor tensility
19. D. four
20. A. Large diameter coils have more wire and thus more flux
21. D. Four
22. B. (a) Decrease, (b) by 1/2
23. D. High permeability and low reluctance
24. A. Magnetic flux
25. B. flux linkage
26. C. Flux linkage
27. A. L
28. C. The values are changing
29. C. 3.3 henries
30. D. 15.0 volts
31. A. (a) 10,000 mH, (b) 10,000,000 μH
41. A. 63.2%
42. B. Five
43. B. 17.3 amperes
44. D. 4.7 amperes
45. B. 19 mA
46. D. 0.0133 seconds
47. B. 12 ohms
48. B. 0.05 second
49. C. Because all inductors have resistance which dissipates power
50. C. P = E/R2
51. C. Hysteresis loss
52. C. Hysteresis loss
53. B. Whenever the flux of one inductor causes an emf to be induced in another inductor
54. B. Physical dimensions of the coils
55. D. The magnetic flux ratio linking the coils
56. A. 4.2 μH
57. C. 12.5 μH
58. B. 18.1 μH
59. C. 0.98 μH
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