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Audio Video Engineering MCQs set -2

Review each question and reveal answers to strengthen your understanding

1 A loud sound is about how many times greater than that of the weakest sounds?
✅ Correct Answer: 3
2 What is the complete audible range for a human ear?
✅ Correct Answer: 3
3 How many Hertz do healthy young people usually hear?
✅ Correct Answer: 4
4 Above how many KHz men and women can’t hear by the age of 55?
✅ Correct Answer: 1
5 What is most sensitive to frequencies in the range of 2,000-5,000 Hz?
✅ Correct Answer: 3
6 Which scale is used to perceive the loudness of sounds?
✅ Correct Answer: 1
7 What does the outer ear act like?
✅ Correct Answer: 2
8 Which of the following separates the outer ear from the middle ear?
✅ Correct Answer: 4
9 Which tube connects the middle ear with the mouth?
✅ Correct Answer: 2
10 What does MP3 stands for?
✅ Correct Answer: 1
11 In which year the first MP3 player was introduced?
✅ Correct Answer: 3
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?
✅ Correct Answer: 1
13 What is the device called that can hold digital audio files on internal or external media in USB MP3 players?
✅ Correct Answer: 1
14 Which device is the best example for the device that can read digital audio files from a hard drive?
✅ Correct Answer: 1
15 Which player dominates the music media market?
✅ Correct Answer: 3
16 What is termed as a network which is used to divide the input signal into separate frequency ranges for each speaker?
✅ Correct Answer: 2
17 What is termed as the point where the curve of woofer output crosses the curve of tweeter output?
✅ Correct Answer: 3
18 What is the range of woofer for 3 way speaker system?
✅ Correct Answer: 1
19 What is the range of tweeter for 3 way speaker system?
✅ Correct Answer: 2
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.
✅ Correct Answer: 2
21 With which material is a photographic film strip coated on one side of photographic film in optical recording of sound?
✅ Correct Answer: 1
22 By converting which signals into variations of light intensity falling onto the film is recording on photographic film donein optical recording of sound?
✅ Correct Answer: 2
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?
✅ Correct Answer: 1
24 Up to how many minutes a standard compact disc can hold up in optical recording of disc?
✅ Correct Answer: 4
25 Which surface of a CD is covered with microscopic bumps called ‘pits’ and ‘lands’ in optical recording of disc?
✅ Correct Answer: 1
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?
✅ Correct Answer: 1
27 What will be the length of a track of data if it is stretched out in a CD in optical recording of disc?
✅ Correct Answer: 2
28 How many discs can be made from a master disc in optical recording of disc?
✅ Correct Answer: 4
29 Which discs are virtually extinct now and have been replaced by compact discs (CDs) since many years due to numerous advantages they offer?
✅ Correct Answer: 1
30 Up to how many GB the disc storage is expanded per layer in Blu-ray technology?
✅ Correct Answer: 4
31 Which video quality is the Blu-ray disc capable of storing?
✅ Correct Answer: 4
32 What can be downloaded instantly from the internet with the help of Blu-ray disc?
✅ Correct Answer: 3
33 What is the data transfer rate in Blu-ray discs?
✅ Correct Answer: 1
34 What can be termed as falsified reproduction of an audio signal caused by change in the waveform of the original signal?
✅ Correct Answer: 1
35 By using which technology home stereo system remains the best way to listen to recorded music?
✅ Correct Answer: 2
36 At which frequency response can one be proud of listening to a Hi-fi music system?
✅ Correct Answer: 1
37 Which type of sound is produced in a closed room?
✅ Correct Answer: 1
38 What is the full form of PA system in audio devices?
✅ Correct Answer: 1
39 To which stage is the output of microphone fed in PA system?
✅ Correct Answer: 4
40 How many types of mixers are there in a PA system in audio devices?
✅ Correct Answer: 2
41 Which gain control is used in processing circuit in PA system in audio devices?
✅ Correct Answer: 1
42 Which amplifier uses push-pull type amplifier circuit in PA system?
✅ Correct Answer: 1
43 Which of the following convert electrical signals into pressure variations resulting in sound waves in PA system?
✅ Correct Answer: 3
44 How is the sound power distributed amongst the audience to achieve uniformity in PA system?
✅ Correct Answer: 1
45 Which type of microphone does not pick up reflected sound as well as the sound waves from the loudspeakers in PA system?
✅ Correct Answer: 4
46 What is termed as the persistence of sound even after the source of sound has stopped producing sound?
✅ Correct Answer: 1
47 What is defined as the time for the acoustic intensity to decrease by a factor of one million?
✅ Correct Answer: 3
48 What is the sound pressure level of a loud clap?
✅ Correct Answer: 1
49 Which of the following have short reverberation time?
✅ Correct Answer: 3
50 What is the interval when a sound is reflected back from a distant object and hits our ears?
✅ Correct Answer: 1
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