西安交通大學14年6月課程考試《專業(yè)英語》考查課試題

2023年12月14日發(fā)(作者：2016年春節(jié))

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西安交通大學14年6月課程考試《專業(yè)英語》考查課試題

西安交通大學14年6月課程考試《專業(yè)英語》考查課試題

一、其他題（共 5 道試題，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.

我們將大規(guī)模發(fā)展電力工業(yè)。

2. 這臺發(fā)動機一直運轉(zhuǎn)良好。

3. 電流在電路中流動的速度是非常快的。

4. 如果使用變壓器，低電壓的電力就能轉(zhuǎn)換成高電壓的電力。

5. 這一現(xiàn)象我們稱之為電磁感應。

3.

基本詞匯的英漢互譯。（共15分，每題1.5分）

1. 運算放大器 ______________

2. ______________ distributed winding

3. 同步發(fā)電機 ______________

4. ______________ reactive power compensation

5. 電能轉(zhuǎn)換器 ______________

6. ___________ load resistance

7. 理想電壓源 ______________

8. ______________ internal resistance

9. 轉(zhuǎn)子 ______________

10. ______________ miconductor

4.

根據(jù)電氣工程專業(yè)基本知識，判斷正誤。（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.

將下列句子翻譯為英文。（共15分，每題3分）

1. 我們把這些物質(zhì)稱為導體。

2. 有兩種不同的電荷：正電荷和負電荷。

3. 電流會使導線發(fā)熱。

4. 電使得收音機工作。

5. 銅允許電流容易地流過它。

二、單選題（共 30 道試題，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

正確答案：

2. The distance protection is applied to protect _____.

A. transformers

B. generators

C. transmission lines

D. bus

正確答案：

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）

正確答案：

4. Copper loss are _____ loss in the primary and

condary windings of the transformer core.

A. inductive

B. capacitive

C. resistive

D. reactive

正確答案：

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

正確答案：

6. In North American _____ is adopted as standard frequency

in electric power system.

A. 25Hz

B. 50Hz

C. 60Hz

D. 125Hz

正確答案：

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

正確答案：

8. The relation results in _____.

A. null

B. identity

C. indefinite value

D. zero

正確答案：

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

A. screen size

B. dot pitch

C. resolution

D. color depth

正確答案：

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

正確答案：

11. A computer’s microprocessor only understands _____ in

binary form.

A. high-level languages

B. machine language

C. human languages

D. asmbly language

正確答案： 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

正確答案：

13.

1

A.

B.

C.

D.

正確答案：

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

正確答案：

15. The electric machine that operates at speeds above

synchronous speed works in _____ region.

A. motoring

B. generating

C. plugging

D. stopping

正確答案：

16. The Buck（降壓

式變換器） is a _____ converter. A. voltage step-up

B. current step-down

C. current step-up

D. resistance

正確答案：

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?

正確答案：

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

正確答案：

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

正確答案：

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

正確答案：

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

正確答案：

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

正確答案：

23. Resistors are _____ elements.

A. passive

B. active

C. independent sources

D. dependent sources

正確答案：

24. 1

A.

B. C.

D.

正確答案：

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

正確答案：

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

A. a digital

B. an analog

C. a discrete

D. a control

正確答案：

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

正確答案：

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 正確答案：

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?

正確答案：

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

正確答案：

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