Electrical engineering MCQ Quiz Hub

Audio Video Engineering MCQs set -1

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1. What is the dimension of sound waves in the real world?




2. As sound requires a medium, it cannot travel through which of the following?




3. What is the effect called in which each single molecule only moves a small distance as it vibrates, and it causes the nearby molecules to vibrate all the way to the ear?




4. Which of the following has all the characteristics of a wave like amplitude, frequency, wavelength, phase and velocity?




5. What is the sound motion curves called?




6. How do sound waves travel from the point of source?




7. What can be termed as the intensity of compressions and rarefaction produced in the medium?




8. What is termed as a pattern which repeats itself over time?




9. What is termed as one repetition of the pattern?




10. What is termed as time required to complete one cycle of vibration?




11. What can be expressed as distance travelled in one second?




12. What is the velocity at 0° C?




13. What is termed as the amount of sound energy that is reflected off a surface?




14. What causes reverberation?




15. What can occur when the speed of a wave changes, as it moves from one environment to another?




16. What is caused by bending across obstacles in sound waves?




17. Which audio frequencies have smaller wavelength and suffer less diffraction?




18. Which resonator is a container/bottle of gas with an open hole?




19. By which formula the resonant frequency is determined?




20. Which resonant frequencies can be obtained with Helmholtz resonator?




21. Which is one of the most common applications of Helmholtz resonator?




22. In which instruments Helmholtz resonators also important?




23. What is disturbed at the opening of Helmholtz resonator that bounces like a mass on a spring in simple harmonic motion which creates sound?




24. What can be termed as the sensation of a frequency?




25. What is the standard pitch of a human ear?




26. Who is capable of detecting a difference in frequency between two separate sounds that is as little as 2 Hz?




27. Which change is insensitive to a human ear?




28. How many set of frequencies comprise the spectrum?




29. What can be termed as frequencies higher than the fundamental frequencies?




30. What makes two musical instruments sound different when they are playing the same note?




31. Which of the following sounds are considered inharmonic?




32. Which of the following sounds are considered harmonic?




33. Which sounds are generally pitched regarding human speech?




34. What is the interval between 400 Hz and 100 Hz?




35. How many bones does middle ear have?




36. What does the bones in the ear act like?




37. Which of the following is the fluid-filled tube present in the inner ear?




38. Which age group of people can hear the frequencies above 20,000 Hz?




39. What is the full form of Hi – Fi?




40. What is the required frequency range for Hi-Fi programs?




41. What is the required frequency range for normal entertainment programs?




42. How much times greater is the threshold of pain corresponding to pressure amplitude of the atmospheric pressure?




43. Which scale is often convenient to measure sound pressures on a logarithmic scale?




44. At what sound pressure is the pain felt?




45. What is the unit of loudness level for pure tone?




46. What is the newer unit of loudness and is now the international standard?




47. How much phons is equal to 1 sone?




48. What is the full form of SPL?




49. What is called as the sound power per unit area?




50. Two sounds have levels of 80 dB and 100 dB. What is the difference in sound intensities?