西安交通大学14年6月课程考试《专业英语》考查课试题

2023年12月14日发(作者：2016年春节)

-

西安交通大学14年6月课程考试《专业英语》考查课试题

西安交通大学14年6月课程考试《专业英语》考查课试题

一、其他题（共 5 道试题，共 70 分。）

1.

1. the standard measure of electrical power ____________

2. an electric generator that produces alternating current

__________

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

____________

6. a device ud 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

____________

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

ba

____________

10. the standard unit of electrical resistance ____________

2.

我们将大规模发展电力工业。

2. 这台发动机一直运转良好。

3. 电流在电路中流动的速度是非常快的。

4. 如果使用变压器，低电压的电力就能转换成高电压的电力。

5. 这一现象我们称之为电磁感应。

3.

基本词汇的英汉互译。（共15分，每题1.5分）

1. 运算放大器 ______________

2. ______________ distributed winding

3. 同步发电机 ______________

4. ______________ reactive power compensation

5. 电能转换器 ______________

6. ___________ load resistance

7. 理想电压源 ______________

8. ______________ internal resistance

9. 转子 ______________

10. ______________ miconductor

4.

根据电气工程专业基本知识，判断正误。（共10分，每空1分）

1. Electron will flow through a conductor from the positive

terminal to the negative terminal. _____

2. For example, if the effective value is 110V, the peak value

is 220V.

_____

3. If a conductor cuts through lines of flux, the voltage in the

conductor is caud. _____

4. Whenever a conductor cuts through lines of flux a voltage

is induced in the conductor. The voltage is CEMF (Counter

Electromotive Force).____

5. PID controller is a very uful controller in industry. _____

6. A digital computer controlled system is only designed for

discrete variable. _____

7. Most programmers today prefer to u high-level

languages, such as C++, Java, COBOL, and Visual Basic. _____

8. An output device, such as a keyboard or mou, gathers

input and transforms it into a ries of electronic signals for the

computer.

_____

9. When three capacitors connected in parallel, . _____

10. In China alternating current is usually gener

ated at 60Hz. __

5.

将下列句子翻译为英文。（共15分，每题3分）

1. 我们把这些物质称为导体。

2. 有两种不同的电荷：正电荷和负电荷。

3. 电流会使导线发热。

4. 电使得收音机工作。

5. 铜允许电流容易地流过它。

二、单选题（共 30 道试题，共 30 分。）

1. In the root-locus method the actual time respon of a

system can be obtained by means of _____.

A. the inver Fourier transform

B. the inver Laplace transform

C. the Fourier transform

D. the Laplace transform

正确答案：

2. The distance protection is applied to protect _____.

A. transformers

B. generators

C. transmission lines

D. bus

正确答案：

3. _____ that connects at least two networks makes decision about the best route for data.

A. A modem

B. A network card

C. A hub

D. A router（路由器）

正确答案：

4. Copper loss are _____ loss in the primary and

condary windings of the transformer core.

A. inductive

B. capacitive

C. resistive

D. reactive

正确答案：

5. A transformer is a device that can convert one ac voltage

to another ac voltage through the action of _____.

A. an electric circuit

B. a magnetic field

C. an electric field

D. a coupling circuit

正确答案：

6. In North American _____ is adopted as standard frequency

in electric power system.

A. 25Hz

B. 50Hz

C. 60Hz

D. 125Hz

正确答案：

7. The wide application of operational amplifiers lies in

advantage of using _____.

A. positive feedback networks B. large open-circuit gain

C. negative feedback networks

D. small output impedance

正确答案：

8. The relation results in _____.

A. null

B. identity

C. indefinite value

D. zero

正确答案：

9. Image clarity on a computer screen is measured with _____.

A. screen size

B. dot pitch

C. resolution

D. color depth

正确答案：

10. The hydropower is well suited for switching according to

_____ command to meet changing power needs.

A. a consumer’s

B. a ur’s

C. a dispatcher’s

D. an operator’s

正确答案：

11. A computer’s microprocessor only understands _____ in

binary form.

A. high-level languages

B. machine language

C. human languages

D. asmbly language

正确答案： 12. An expansion slot is a long, narrow socket on the

motherboard into which you can plug _____.

A. an expansion card

B. a modem

C. a network card

D. a sound card

正确答案：

13.

1

A.

B.

C.

D.

正确答案：

14. _____ can provide an asynchronous link between two ac

electric power system with different nominal frequencies.

A. The HVDC (high voltage DC) transmission

B. The EHV (extra-high voltage) AC transmission

C. The AC distribution

D. Generators

正确答案：

15. The electric machine that operates at speeds above

synchronous speed works in _____ region.

A. motoring

B. generating

C. plugging

D. stopping

正确答案：

16. The Buck（降压

式变换器） is a _____ converter. A. voltage step-up

B. current step-down

C. current step-up

D. resistance

正确答案：

17. An electric heater draws 10 A from a 120V line. The

resistance of the heater is _____.

A. 1200?

B. 120?

C. 12?

D. 1.2?

正确答案：

18. The overall transfer function is the ratio of the transform

of the controlled variable to the transform of _____.

A. the controlled variable

B. the reference input

C. the feedback

D. the output variable

正确答案：

19. The protective scheme that ns zero quence current

and operates as necessary is called as _____.

A. overcurrent protection

B. zero quence protection

C. negative quence protection

D. directional protection

正确答案：

20. The system’s characteristic equation can be ud to

determine _____ of a linear time-invariant system.

A. the stability

B. magnitude of the steady-state error C. the controllability

D. the obrvability

正确答案：

21. The objective of the optimal economic operation of

power systems is _____.

A. to minimize the total production cost

B. to maintain frequency constant

C. to maintain voltages constant

D. to ensure balance between generation and load

正确答案：

22.

In a coal-fired power plant, an electrostatic precipitator is

ud to remove _____ from the combustion gas.

A. solid particle

B. SO2

C. CO

D. water vapour

正确答案：

23. Resistors are _____ elements.

A. passive

B. active

C. independent sources

D. dependent sources

正确答案：

24. 1

A.

B. C.

D.

正确答案：

25. Data stored in RAM _____ when the power of the

computer is turned off.

A. is held permanently

B. permanently disappears

C. is held temporarily

D. temporarilydisappears

正确答案：

26. ON-OFF information can be reprented by _____ signal.

A. a digital

B. an analog

C. a discrete

D. a control

正确答案：

27. In the form of _____ the output is continuously fed back

and compared with the reference input.

A. continuous control

B. discontinuous control

C. discrete-data control

D. sampled-data control

正确答案：

28. When an induction motor with 10 poles is supplied by

50Hz three-pha ac power source, the synchronous revolutions

per minute is _____. (Synchronous r/min = 120 f/p)

A. 1000

B. 900

C. 700

D. 600 正确答案：

29. An electric heater draws 10 A from a 120V line. The

resistance of the heater is _____.

A. 1200?

B. 120?

C. 12?

D. 1.2?

正确答案：

30. The precision of ADC ( analog-to-digital conversion ) is

determined by _____.

A. its speed

B. its gain

C. the accuracy of the reference voltage

D. the number of binary bits

正确答案：

-