专业英语_考查试题
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C. the accuracy of the reference voltage
D. the number of binary bits
10. When an induction motor with 10 poles is supplied by 50Hz three-phase ac power source, the synchronous revolutions per minute is _____. (Synchronous r/min =120 f/p)
7. The north pole of the armature is attracted to the south pole of the main field. The south pole of the armature is attracted to the north pole of the main field._____
5. In alternating current an AC generator is used to make electrons flow continuously in one direction._____
6. InChinaalternating current is usually generated at 60Hz._____
A. digital form B. numerical form
C. binary form D. analog form
9. The precision of ADC ( analog-to-digital conversion ) is determined by _____.
A. its speedB. its gain
A. a digitalB. an analog
C. a discreteD. a control
第2页共6页
5. In North American _____ is adopted as standard frequency in electric power system.
A. 25Hz B. 50Hz C. 60Hz D. 125Hz
16. In a coal-fired power plant, an electrostatic precipitator is used to remove _____ from the combustion gases.
A. solid particle B. C. CO D. water vapour
3. The algebraic sum of all voltages around a loop is _____.
A. zeroB. indefinite value
C. sum of voltage risesD. sum of voltage drops
4. ON-OFF information can be represented by _____ signal.
____________
8. a material that insulates, especially a nonconductor of sound, heat, or electricity____________
9. of or relating to a system of numeration having 2 as its base
17. In cogeneration（热电联产，热电联供）systems, the overall energy efficiencies are raised by _____.
A. important the combustion process
B. providing thermal energy to the customers
13. A computer’s microprocessor only understands _____ in binary form.
A. high-level languages B. machine language
C. human languages D. assembly language
3. two pieces of wire were connected end to end____________
4. two pieces of wire were connected side by side____________
5. the standard unit of measurement for strength of an electrical current
三.基本词汇的英汉互译。（共15分，每题1.5分）
1.____________rated armature current
2.理想电源____________
3.____________circuit parameters
4.周期电流____________
5.____________negative feedback
2. In North American 50Hz is adopted as standard frequency in electric power system._____
3. A computer’s microprocessor only understands high-level language.
B. The EHV (extra-high voltage) AC transmission
C. The AC distribution
D. Generators
7. The generator voltages are usually stepped up to the transmission voltage level by _____.
A. 1000 B.900 C. 700 D. 600
11. A computer printer is _____ device that produces computer-generated text or graphical images on paper.
A. an input B. an output
C. raising the steam temperature
D. reducing emissions
18. The hydropower is well suited for switching according to _____ command to meet changing power needs.
6.直轴____________
7.有功电流分量____________
8.____________reactive current current
9.电网____________
10.____________digital relays
四.根据电气工程基本知识，完成填空。（共30分，每空1分）
1. Resistors are _____ elements.
A. passiveB. active
C. independent sourcesD. dependent sources
2. An electric heater draws10 Afrom a 120V line. The resistance of the heater is _____.
A. 1200ΩB. 120ΩC. 12ΩD. 1.2Ω
成绩
西安交通大学现代远程教育考试卷
课程:专业英语
专业班号考试日期年月日
姓名学号期中期末
一．根据下面的英文解释，写出相应的英文词汇。（共10分，每空1分）
1. the standard measure of electrical power____________
2. an electric generator that produces alternating current__________
____________
6. a devicห้องสมุดไป่ตู้ used to break or open an electric circuit or to divert current from one conductor to another____________
7. a device that generates light, heat, or therapeutic radiation
C. a storage D. a data processing
12. _____ carries data out to speakers and headphones, or back from a microphone.
A. A graphics cardB. A modem
C. A network card D. A sound card
6. _____ can provide an asynchronous link between two ac electric power system with different nominal frequencies.
A. The HVDC (high voltage DC) transmission
第3页共6页
14.Delphibelongs to _____.
A. low-level programming language
B. high-level programming language
C. a programming language connected with the computer hardware behavior
D. an assembly language
15. A floppy disk drive is _____ device that reads data from and writes data to floppy disks.
A. an input B. an output
C. a storage D. a data processing
____________
10. the standard unit of electrical resistance____________
二.根据电气工程专业基本知识，判断正误。（共10分，每空1分）
1. In alternating current an AC generator is used to make electrons flow continuously in one direction._____
A. series capacitor B. parallel reactors
C. step-up transformers D. step-down transformers
8. A D/A is a device that can convert a digital signal to the equivalent _____.
A. a consumer’sB. a user’s
C. a dispatcher’sD. an operator’s
19. The total transfer function for and in cascade is _____.
8. When three capacitors connected in series, ._____
9. The commutator can change current direction in the conductor.
_____
10. Most computers are equipped with a keyboard as the primary output device._____
_____
4. Instructions written in a high-level language must be translated into machine language in binary form before a computer can use them._____
第1页共6页
D. the number of binary bits
10. When an induction motor with 10 poles is supplied by 50Hz three-phase ac power source, the synchronous revolutions per minute is _____. (Synchronous r/min =120 f/p)
7. The north pole of the armature is attracted to the south pole of the main field. The south pole of the armature is attracted to the north pole of the main field._____
5. In alternating current an AC generator is used to make electrons flow continuously in one direction._____
6. InChinaalternating current is usually generated at 60Hz._____
A. digital form B. numerical form
C. binary form D. analog form
9. The precision of ADC ( analog-to-digital conversion ) is determined by _____.
A. its speedB. its gain
A. a digitalB. an analog
C. a discreteD. a control
第2页共6页
5. In North American _____ is adopted as standard frequency in electric power system.
A. 25Hz B. 50Hz C. 60Hz D. 125Hz
16. In a coal-fired power plant, an electrostatic precipitator is used to remove _____ from the combustion gases.
A. solid particle B. C. CO D. water vapour
3. The algebraic sum of all voltages around a loop is _____.
A. zeroB. indefinite value
C. sum of voltage risesD. sum of voltage drops
4. ON-OFF information can be represented by _____ signal.
____________
8. a material that insulates, especially a nonconductor of sound, heat, or electricity____________
9. of or relating to a system of numeration having 2 as its base
17. In cogeneration（热电联产，热电联供）systems, the overall energy efficiencies are raised by _____.
A. important the combustion process
B. providing thermal energy to the customers
13. A computer’s microprocessor only understands _____ in binary form.
A. high-level languages B. machine language
C. human languages D. assembly language
3. two pieces of wire were connected end to end____________
4. two pieces of wire were connected side by side____________
5. the standard unit of measurement for strength of an electrical current
三.基本词汇的英汉互译。（共15分，每题1.5分）
1.____________rated armature current
2.理想电源____________
3.____________circuit parameters
4.周期电流____________
5.____________negative feedback
2. In North American 50Hz is adopted as standard frequency in electric power system._____
3. A computer’s microprocessor only understands high-level language.
B. The EHV (extra-high voltage) AC transmission
C. The AC distribution
D. Generators
7. The generator voltages are usually stepped up to the transmission voltage level by _____.
A. 1000 B.900 C. 700 D. 600
11. A computer printer is _____ device that produces computer-generated text or graphical images on paper.
A. an input B. an output
C. raising the steam temperature
D. reducing emissions
18. The hydropower is well suited for switching according to _____ command to meet changing power needs.
6.直轴____________
7.有功电流分量____________
8.____________reactive current current
9.电网____________
10.____________digital relays
四.根据电气工程基本知识，完成填空。（共30分，每空1分）
1. Resistors are _____ elements.
A. passiveB. active
C. independent sourcesD. dependent sources
2. An electric heater draws10 Afrom a 120V line. The resistance of the heater is _____.
A. 1200ΩB. 120ΩC. 12ΩD. 1.2Ω
成绩
西安交通大学现代远程教育考试卷
课程:专业英语
专业班号考试日期年月日
姓名学号期中期末
一．根据下面的英文解释，写出相应的英文词汇。（共10分，每空1分）
1. the standard measure of electrical power____________
2. an electric generator that produces alternating current__________
____________
6. a devicห้องสมุดไป่ตู้ used to break or open an electric circuit or to divert current from one conductor to another____________
7. a device that generates light, heat, or therapeutic radiation
C. a storage D. a data processing
12. _____ carries data out to speakers and headphones, or back from a microphone.
A. A graphics cardB. A modem
C. A network card D. A sound card
6. _____ can provide an asynchronous link between two ac electric power system with different nominal frequencies.
A. The HVDC (high voltage DC) transmission
第3页共6页
14.Delphibelongs to _____.
A. low-level programming language
B. high-level programming language
C. a programming language connected with the computer hardware behavior
D. an assembly language
15. A floppy disk drive is _____ device that reads data from and writes data to floppy disks.
A. an input B. an output
C. a storage D. a data processing
____________
10. the standard unit of electrical resistance____________
二.根据电气工程专业基本知识，判断正误。（共10分，每空1分）
1. In alternating current an AC generator is used to make electrons flow continuously in one direction._____
A. series capacitor B. parallel reactors
C. step-up transformers D. step-down transformers
8. A D/A is a device that can convert a digital signal to the equivalent _____.
A. a consumer’sB. a user’s
C. a dispatcher’sD. an operator’s
19. The total transfer function for and in cascade is _____.
8. When three capacitors connected in series, ._____
9. The commutator can change current direction in the conductor.
_____
10. Most computers are equipped with a keyboard as the primary output device._____
_____
4. Instructions written in a high-level language must be translated into machine language in binary form before a computer can use them._____
第1页共6页