ĐỀ CƯƠNG ÔN THI ANH VĂN CHUYÊN NGHÀNH ĐIỆN TỬ

COPYRIGHT©WWW.ET-HUI.COM ĐỀ CƯƠNG ÔN THI ANH VĂN CHUYÊNNGHÀNHĐIỆN TỬ ( ^_^ Created by whitestone04 from www.et-hui.com ^_^ ) Unit 1: ELECTRONICS IN THE HOME 1. Electronics began ____the start of twentieth century with the invention of the vacuum tube A. at@ B. in C. on D. with 2. It was not until 1958 that microelectronics began with the development of ____ on silicon chips A. CDs B. hi-fi C. ICs @ D. vacuum tube 3. Electronics timers ____in digital alarm clocks, water heaters, electric cookers and microwave ovens A. is found B. are found @ C. is founded D. have been founding 4. In a simple radio, the function of the tuner is: A. to select the required signal @ B. to separate off the audio part of the signal C. to amplify the signal D. to drive the loudspeaker. 5. In a simple radio, the function of the detector is: A. to select the required signal B. to amplify the signal C. to separate off the audio part of the signal @ D. to drive the loudspeaker. 6. In a simple radio, the function of the AF amplifier is : A. to select the required signal B. to amplify the signal @ C. to separate off the audio part of the signal D. to drive the loudspeaker. 7. The radio ____ a tuner, a detector, and an AF amplifier. A. consists of B. is composed of C. consist of D. A & B is correct@ 8. A tuner, a detector, and an AF amplifier___ the radio. A. comprise ( bao gồm)@ B. combine C. consist D. compose 9. In a simple radio, the tuner ____ to the detector A. is connected B. is linked to C. is connecting D. A & B is correct@ 10. The volume control consists of a ten-microfarad electrolytic capacitor connected _____ with a five-kilohm potentiometer (POT) A. in series @ B. in serial C. parallel D. directly 11. What is used to convert sounds into audio frequency signal? A. loudspeaker B. mixer C. microphone@ D. detector 1 COPYRIGHT©WWW.ET-HUI.COM 12. What is used to amplify the power of the modulated carrier wave? A. RF power amplifier@ B. amplifier C. aerial C. modulator 13. the function of the aerial is: A. to amplify the power of the modulated carrier wave B. to transmit the modulated carrier wave over long distances C. to receive the RF weak signal D. B & C is correct @ 14. CD is the abbreviation of___ A. Composed disc B. compact driver C. compact disc @ D. compacted disc 15. hi-fi is the abbreviation of_____ A. high-finger B. high-fidelity @ C. hide-fidelity D. hide-finger UNIT 2: COMPONENT VALUES 16. Resistors ______ with colored band to ease the problem of marking such small components. A. code B. coded C. are coded @ D. is coded 17. In a coded resistor, the forth band indicate___ A. the tolerance@ B. first digit C. forth digit D. number of zero following 18. If the forth band of a coded resistor is red, it means that A. the tolerance is 2% @ B. the tolerance is 5% C. the tolerance is 10% D. the tolerance is 20% 19. Relaxing the tolerance of the resistor enables the manufacture to sell them more _____ A. cheaper B. cheaply @ C. cheaplier D. expensive 20. The preferred value may seem _____ at first sight but this not so. A. illogic B. logical C. illogical @ D. illogically 21. Why do manufacturers make resistors in the preferred values rather than in equally stepped values? A. Because they will sell resistors more cheaply @ B. Because they will sell resistor more cheaper. C. Because they will sell resistors more expensively D. Because they can not do so 22. The fist band of a colored-banding coded capacitor indicate___ A. fist digit @ B. number of zeros following C. tolerance D. voltage 23. The forth band of a colored-banding coded capacitor indicate___ A. fist digit B. number of zeros following C. tolerance @ D. voltage 2 COPYRIGHT©WWW.ET-HUI.COM 24. The fifth band of a colored-banding coded capacitor indicate___ A. fist digit B. number of zeros following C. tolerance D. voltage @ 25. Carbon resistors are _____compressed graphite which is formed into small tubes A. made of @ B. made in C. made from D. made to UNIT 3: RADIO 26. Based on the way of travel, how many kinds of radio waves ? A. One kind: surface or ground wave A. Two kinds: surface wave and sky wave C. Three kinds: surface or ground wave, sky wave and space wave. @ D. Four kinds: surface wave, ground wave, sky wave and space wave. 27. Surface or ground wave travels along the ground, following the ____of the earth’s surface. A. curvature @ B. culture C. line D. picture 28. Which material (vật liệu) has poor conductor? A. water B. sand @ C. A&B is correct D. A&B is incorrect 29. Poor conductors absorb surface or ground wave more ____than good conductor. A. weakly B. easily C. strongly @ D. hardly 30. _____ travels skywards and, if it is below a certain critical frequency (typically 300MHz), is returned to earth by the ionosphere. A. surface or ground wave B. space wave C. surface or ground wave and sky wave D. sky wave @ 31. ______ consists of layers of air molecules stretching from about 80km above the earth to 500km. A. atmosphere B. troposphere C. ionosphere @ D. stratosphere 32. VHF, UHF, and microwave signals are the _____ A. space wave @ B. sky wave C. ground wave D. surface wave. 33. When _____quickly, A cell may become hot A. discharge B. discharged C. discharging@ D. A cell dischange 34. The related noun(s) of the verb “Absorb” is/are A. absorber B. absorbtion C. absorption D. A&C are correct@ 35. The related noun of the verb “conduct” is/are A. conducter B. conducted C. conductivity@ D. conducty 36. AF is the abbreviation of_____ A. Audio Function B. Audition Fan C. Audio Frequency@ D. Audible Food 3 COPYRIGHT©WWW.ET-HUI.COM 37. RF is the abbreviation of_____ A. Radio Frequence B. Radar Frequency C. Radio Frequency@ D. Road Frequency 38. AM is the abbreviation of_____ A. amplitude-modulated@ B. amplituding - modulated C. amplituding - modulated D. amplitude - modulating 39. FM is the abbreviation of_____ A. frequency- modulating B. frequency-modulated@ C. frequent- modulated D. frequent- modulating 40. A typical radio tuner circuit consists of an inductor and capacitor and capacitor connected in ______ A. paralel B. paraleled C. parallel@ D. paralleling UNIT 4: MAKING A RECORD 41. Each vocalist, instrument, or group of instruments _____ linked to a microphone on a mixer or mixing desk. A. is @ B. are C. were D. have been 42. The mixing desk allows the _____to adjust the recording level for each channel A. computing engineer B. telecommunicating engineer C. studio engineer @ D. All is correct 43. The instruments are ______through the mixer into a multitrack tape recorder A. channel B. to channel C. be channelled D. channelled@ 44. One of the most common effects is reverb (reverberation) which can made the music sound ___it was recorded in a very large building or a very small room. A. as if@ B. as C. if D. as far as 45. The ____sound is recorded on a two-track mastering machine to produce a master tape A. editing B. edited@ C. edit D. be edited 46. Each instrument ______using a microphone. A. records B. recording C. is recorded@ D. are recorded 47. The remixed tape _______to produce a master tape A. is mastered down@ B. are mastered down C. is master down D. masters down 48. the pits in the CDs represent the ____ audio pattern. A. analogue B. digital@ C. electromagnetic D. magnetic 49. the word “as” in the sentence “As the disc is revolved, a laser beam is used to mark audio information pattern on its surface” means A. because B. when@ C. equal D. for 4 COPYRIGHT©WWW.ET-HUI.COM 50. After punching the centre hole,a _____ is applied and the CD is packaged A. label@ B. a pit mark C. a layer of plastic D. a box UNIT 5: COMPUTER 51. The I/O (input/output) unit _____ of one or more ICs. A. has B. consist C. consists@ D. includes 52. ______ is/are used to control the data going in and out of the computer A. I/O units @ B. ROM C. RAM D. address bus 53. The small ROM _____ some permanent storage A. gives B. provides@ C. give D. provide 54. What is used for temporary storage? A. RAM@ B. ROM C. CPU D. register 55. The contents of the RAM are constantly____. A. changing@ B. change C. changes D. fixed 56. What provides some permanent storage? A. RAM B. ROM@ C. CPU D. register 57. Which part of the computer controls the rest of the system and performs all the arithmetic and logic operations on the data? A. CPU@ B. ROM C. RAM D. data bus 58. The ____ only operates while the computer is switched on. A. RAM@ B. ROM C. CPU D. gate 59. CPU is the abbreviation of A. centre processor unit B. control program unit C. central program union D. central processing unit@ 60. What are buses in the computer used for? A. carrying the internal signal between each unit@ B. transferring data between all the units C. sending control signals from the CPU to the other unit D. sending signals from the CPU which indicate the memory and I/O locations to be used 61. What is used to transfer data between all the units A. data bus @ B. control bus C. address bus D. processor bus 62. What is used to send control signals from the CPU to the other unit? A. data bus B. control bus@ C. address bus D. processor bus 63. What is used to send signals from the CPU which indicates the memory and I/O locations? 5 ... - tailieumienphi.vn