MCQ in Acoustics Part 1 – Answers

(Last Updated On: April 2, 2020)

MCQ in Acoustics Part 1 | ECE Board Exam

Below are the answers key for the Multiple Choice Questions in Acoustics – Part 1.

1. Sound-level meter

2. Noy

3. Noise rating curves

4. Natural frequency

5. Flanking transmission

6. Hearing level

7. 10 Hz

8. 40 Hz

9. 330 m/s

10. 214.5 Hz

11. 89.1 dB

12. Converts current variations into sound waves

13. Carbon

14. Bypassing high audio frequencies

15. 1000 Hz

16. Echo

17. Dolby

18. Sound intensity

19. Phon

20. Sound intensity

21. Mel

22. Decibel

23. Pitch and loudness

24. Dynamic

25. 50 watts

26. 1000 Hz

27. 5 A

28. 2.2

29. 7.6 dB

30. Supersonic

31. 5000 ft/sec

32. 0.18 W

33. Wavelength

34. 10 log I/Iref

35. 20 log P/ Pref

36.  Frequency response

37. Reflection

38. Diffraction

39. Refraction

40. Reverberation time

41. Frequency

42. Ultrasonic

43. Crystal

44. Spider

45. 115.56 dB SPL

46. 35.3

47. Proximity effect

48. 20 Hz to 20 kHz

49. 10 Hz to 20 kHz

50. 5000 Hz to 10 kHz

Questions and Answers in Acoustics Series

Following is the list of multiple choice questions in this brand new series:

MCQ in Acoustics
PART 1: MCQ from Number 1 – 50                        Answer key: PART 1
PART 2: MCQ from Number 51 – 100                   Answer key: PART 2
PART 3: MCQ from Number 101 – 150                 Answer key: PART 3
PART 4: MCQ from Number 151 – 200                 Answer key: included

Complete List of MCQ in Communications Engineering per topic

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