Electrical engineering MCQ Quiz Hub

Audio Video Engineering MCQs set -2

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1. A loud sound is about how many times greater than that of the weakest sounds?




2. What is the complete audible range for a human ear?




3. How many Hertz do healthy young people usually hear?




4. Above how many KHz men and women can’t hear by the age of 55?




5. What is most sensitive to frequencies in the range of 2,000-5,000 Hz?




6. Which scale is used to perceive the loudness of sounds?




7. What does the outer ear act like?




8. Which of the following separates the outer ear from the middle ear?




9. Which tube connects the middle ear with the mouth?




10. What does MP3 stands for?




11. In which year the first MP3 player was introduced?




12. Which of the following does the overall functions like controlling the MP3 files reading from the memory and applying them to audio codec and controlling playback process from control keys?




13. What is the device called that can hold digital audio files on internal or external media in USB MP3 players?




14. Which device is the best example for the device that can read digital audio files from a hard drive?




15. Which player dominates the music media market?




16. What is termed as a network which is used to divide the input signal into separate frequency ranges for each speaker?




17. What is termed as the point where the curve of woofer output crosses the curve of tweeter output?




18. What is the range of woofer for 3 way speaker system?




19. What is the range of tweeter for 3 way speaker system?




20. Design a crossover network to give 12 dB per octave attenuation for critical frequency of 0.5 KHz. Loudspeaker is having resistance of 8 Ω.




21. With which material is a photographic film strip coated on one side of photographic film in optical recording of sound?




22. By converting which signals into variations of light intensity falling onto the film is recording on photographic film donein optical recording of sound?




23. What is a small, portable and round medium made of molded polymer for electronically recording, storing, and playing back audio, video, text and other information in digital form in optical recording of sound?




24. Up to how many minutes a standard compact disc can hold up in optical recording of disc?




25. Which surface of a CD is covered with microscopic bumps called ‘pits’ and ‘lands’ in optical recording of disc?




26. Which two companies were pioneers in developing projects to record sound in digital form which give birth to the compact disc system in October 1982?




27. What will be the length of a track of data if it is stretched out in a CD in optical recording of disc?




28. How many discs can be made from a master disc in optical recording of disc?




29. Which discs are virtually extinct now and have been replaced by compact discs (CDs) since many years due to numerous advantages they offer?




30. Up to how many GB the disc storage is expanded per layer in Blu-ray technology?




31. Which video quality is the Blu-ray disc capable of storing?




32. What can be downloaded instantly from the internet with the help of Blu-ray disc?




33. What is the data transfer rate in Blu-ray discs?




34. What can be termed as falsified reproduction of an audio signal caused by change in the waveform of the original signal?




35. By using which technology home stereo system remains the best way to listen to recorded music?




36. At which frequency response can one be proud of listening to a Hi-fi music system?




37. Which type of sound is produced in a closed room?




38. What is the full form of PA system in audio devices?




39. To which stage is the output of microphone fed in PA system?




40. How many types of mixers are there in a PA system in audio devices?




41. Which gain control is used in processing circuit in PA system in audio devices?




42. Which amplifier uses push-pull type amplifier circuit in PA system?




43. Which of the following convert electrical signals into pressure variations resulting in sound waves in PA system?




44. How is the sound power distributed amongst the audience to achieve uniformity in PA system?




45. Which type of microphone does not pick up reflected sound as well as the sound waves from the loudspeakers in PA system?




46. What is termed as the persistence of sound even after the source of sound has stopped producing sound?




47. What is defined as the time for the acoustic intensity to decrease by a factor of one million?




48. What is the sound pressure level of a loud clap?




49. Which of the following have short reverberation time?




50. What is the interval when a sound is reflected back from a distant object and hits our ears?