Tiêu đề mcq Consumer Electronics.pdf ✅

Way to Polytechnic ● Way to Polytechnic CONSUMER ELECTRONICS Unit 1: Audio Fundamentals and Devices: 1. What is the unit used to measure the intensity of sound? a) Watts b) Decibels c) Hertz d) Amperes Answer: b) Decibels 2. Which of the following best describes audio level metering? a) Measurement of frequency of sound b) Measurement of sound intensity c) Measurement of sound duration d) Measurement of sound velocity Answer: b) Measurement of sound intensity 3. Which of the following is NOT a characteristic of sound signal? a) Frequency b) Amplitude c) Color d) Phase Answer: c) Color 4. What is the working principle of a microphone? a) Converts sound waves into electrical signals b) Converts electrical signals into sound waves c) Amplifies sound waves d) Filters out sound waves Answer: a) Converts sound waves into electrical signals 5. Which type of microphone is known for its durability and ruggedness? a) Condenser microphone b) Ribbon microphone c) Dynamic microphone d) Carbon microphone https://sbte.way2poly.in
Way to Polytechnic ● Way to Polytechnic Answer: c) Dynamic microphone 6. What is the working principle of speakers? a) Converts electrical signals into sound waves b) Converts sound waves into electrical signals c) Filters out sound waves d) Amplifies sound waves Answer: a) Converts electrical signals into sound waves 7. Which type of speaker is commonly used in small electronic devices like smartphones? a) Horn speaker b) Subwoofer c) Piezoelectric speaker d) Woofer Answer: c) Piezoelectric speaker 8. Sound recording principle involves the conversion of __________. a) Electrical signals into sound waves b) Sound waves into electrical signals c) Mechanical energy into electrical signals d) Light energy into sound waves Answer: b) Sound waves into electrical signals 9. Which type of sound recording involves using physical grooves on a surface? a) Analog recording b) Digital recording c) Magnetic recording d) Optical recording Answer: a) Analog recording 10. What is the term used to describe the process of capturing sound in its original form? a) Reproduction b) Replication c) Recording d) Reconstruction Answer: c) Recording https://sbte.way2poly.in
Way to Polytechnic ● Way to Polytechnic 11. Which of the following is NOT a type of microphone? a) Condenser microphone b) Dynamic microphone c) Magnetic microphone d) Ribbon microphone Answer: c) Magnetic microphone 12. Which type of microphone is known for its sensitivity and wide frequency response? a) Dynamic microphone b) Condenser microphone c) Ribbon microphone d) Carbon microphone Answer: b) Condenser microphone 13. What is the primary role of an audio level meter? a) To measure the amplitude of sound waves b) To measure the frequency of sound waves c) To convert sound waves into electrical signals d) To amplify sound waves Answer: a) To measure the amplitude of sound waves 14. Which component of a microphone converts sound waves into electrical signals? a) Diaphragm b) Magnet c) Coil d) Battery Answer: a) Diaphragm 15. Which type of speaker is designed to reproduce low-frequency sounds? a) Tweeter b) Woofer c) Mid-range speaker d) Subwoofer Answer: d) Subwoofer https://sbte.way2poly.in
Way to Polytechnic ● Way to Polytechnic 16. What is the function of an audio compressor? a) It increases the dynamic range of audio signals. b) It decreases the dynamic range of audio signals. c) It increases the frequency of audio signals. d) It decreases the frequency of audio signals. Answer: b) It decreases the dynamic range of audio signals. 17. Which type of microphone is commonly used in recording studios due to its high sensitivity? a) Dynamic microphone b) Condenser microphone c) Ribbon microphone d) Carbon microphone Answer: b) Condenser microphone 18. What is the purpose of an audio mixer in sound recording? a) To convert sound waves into electrical signals b) To adjust the volume levels of different audio signals c) To amplify sound waves d) To record sound waves onto a storage medium Answer: b) To adjust the volume levels of different audio signals 19. Which type of microphone is known for its durability and ability to handle high SPL levels? a) Dynamic microphone b) Condenser microphone c) Ribbon microphone d) Carbon microphone Answer: a) Dynamic microphone 20. What is the primary function of a speaker cone? a) To convert electrical signals into sound waves b) To filter out unwanted frequencies c) To amplify sound waves d) To convert sound waves into electrical signals Answer: d) To convert sound waves into electrical signals https://sbte.way2poly.in