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Audio Engineering Practice Test: Audio Devices and their Applications
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Audio equipment is used in many different scenarios, such as concerts, bars, meeting rooms and the home.  Here are some examples of audio devices and their applications: Digital audio recorders: Used to record meetings, interviews, or lectures and download them into a computer Microphones: Used in many applications such as telephones, hearing aids, public address systems, motion picture production, live and recorded audio engineering, sound recording, two-way radios, megaphones, and radio and television broadcasting Sound cards: An internal expansion card that provides input and output of... Show more
Audio Engineering Practice Test: Audio Devices and their Applications
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25 Questions

1. What is expressed as the ratio of ‘signal output’ to the ‘output in the absence of signal’?
2. What is the data transfer rate in Blu-ray discs?
3. Which type of microphone is used for mobile communications?
4. What is the equation for the instantaneous current through load resistor in carbon microphone?
5. Which surface of a CD is covered with microscopic bumps called ‘pits’ and ‘lands’ in optical recording of disc?
6. In horn type loudspeakers, the lowest frequency which can be reproduced depends on the diameter of mouth which can be determined by fc = 190 / d.
7. Which of the following microphone is coated with thin layer of Teflon at the back plate?
8. In which form the mechanical force on the crystal is developed in both directions when there is pressure of sound waves?
9. What is the equation for the force in newton on the coil due to interaction between current through the coil and magnitude field?
10. What is defined as the speaker which covers mid audio frequencies?
11. In which of the following microphone two matching transducing elements are used?
12. The intensity of sound increases with the distance in PA system.
13. What is the SNR (Signal to Noise Ratio) of the horn type microphone?
14. What is attached to the coil of moving coil loudspeaker and it causes compression and rarefaction cycles in air?
15. How many types of mixers are there in a PA system in audio devices?
16. What is the unit for directivity in loudspeaker?
17. What is the range of woofer for 3 way speaker system?
18. Which magnetic material is the magnet in the moving coil loudspeaker made up of?
19. What is the percent of broader lobe present in rear of hypercardioid microphone?
20. How is the sound power distributed amongst the audience to achieve uniformity in PA system?
21. What should be the distortion to maintain the quality of microphone and Hi-Fi systems?
22. What is the power handling capacity for cone type speaker?
23. Which of the following microphone is used for lecture delivery in the class/hall?
24. What is the equation of cut off frequency fc of the horn type loud speaker?
25. In multi-way speaker system a smooth overall response is not obtained.