NEETS Module 02 Assignment 1: Concepts of Alternating Current – Answers

Below are the answers key for the Textbook Assignment: Chapter 1, “Concepts of Alternating Current” 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. A. amplitude and direction

2. B. A resistor placed in series with the load

3. D. Ac can be readily stepped up or down

4. B. Amplitude versus time

5. A. A magnetic field

9. C. It is perpendicular to and equal along all parts of the conductor

10. D. All of these

11. B. magnetic field

12. A. Hysteresis loss

13. D. (a) Concentric circles (b) Perpendicular

14. A. Because separate lines of magnetic force link and combine their effects

15. B. (a) Minimum, (b) minimum

16. B. A sine curve

17. C. 180º

18. D. (a) 90º , (b) 270º

19. D. (a) 4, (b) 2

20. D. (a) Magnetic flux, north to south, (b) Current

21. A. (a) Ac, (b) sine wave

22. C. Frequency

23. B. Hertz

24. A. 1 Hz

25. A. 0.004 second

26. D. 1667 Hz

37. C. 1400 times

38. C. Instantaneous value

39. D. Effective value

40. B. The average value

41. C. Eavg = 0.636 x Emax

42. B. 38 volts

43. B. 140 volts

44. D. 9 volts

45. A. 2.9 amperes

46. D. 1.9 amperes

47. B. Ieff

48. C. Eeff

49. C. Eeff

50. A. 170 volts

51. B. Effective

52. C. Eeff = Emax x 0.707

53. A. 4.6 amperes

54. B. 11 volts

61. C. Never mix

62. B. 14.6 amperes

63. C. 20.01 amperes

64. D. 47.1

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