电气工程及其自动化专业英语复习
纪检组长-外贸公司实习报告
1、目前，煤仍然就是凝汽式电厂最长用得能源。
At present coal
is the most common food of a steam power plant、
2、为防止人畜触电，高压电一般采用架空线输送。
High voltage
current is usually carried by overhead wire system
so as to prevent living things being
electrocuted、
3、这座由电子计算机控制得核电站将向全市供电。
This nuclear power plant which is computer-
controlled will serve the entire city、
4、电学与电子学实际上就是唯一难以分开得，二者相互渗透，相互联系。
Electricity and electronics are really
indivisible, each forming part of the other、
5、元件技术中起主要作用得就是半导体元件。
The major
contributors in component technology have been in
the so
semiconductor components、
6、电压，电流与电阻这三个因素就是相互关联得。
The factors,
voltage, current and resistance , are related to
each other 、
7、电动机与发电机就就是以磁与电这二者之间得关系为基础得
Based upon the relationship between magnetism
and electricity are motors and generators
8，随着电气工程学得发展，电力能被输送到非常遥远得地方去。
With the
development of electrical engineering , power can
be transmitted over long distance、
9每时每刻，能量都在由一种形式变成另一种形式。
Every moment of
every day, energy is being transformed from one
form into another、
10、只要知道电压与电流，就能测定电阻。
The resistance can be determined provided that
the voltage and current are known、
11、已经证明，能量就是不可能消灭得，只能转换成其她形式。
It has been
proved that energy can’t be destroyed , it can
only be changed into other forms、
12。可见磁性材料广泛用于现在电子设备中。
It can be seen that
magnetic materials are used in a wide range of
modern electronic equipment、
13、在热电厂燃烧得化学能并未全部转变成热能。
In a thermal power
plant , all the chemical energy of the fuel is not
converted into heat 、
14、电流过导线就像水流过管子一样。
The flowing of electricity through a wire is
not unlike that of water through a pipe、
15、没有检查好仪表，切勿开始做实验。
Never start to do the
experiment before you have checked the
meter
16同性电荷相斥，异性电荷相吸
Like charges repel
each other while opposite charges attract。
17发展经济必须注意环境保护
Attention must be paid to
environmental protection in developing economy
18nothing in the world moves faster than
light
19自动化能帮助我们提高产量30%
Automation will
help us to raise the output of production by
thirty percent
20只要知道电压、电流、就能测定电阻
The
resistance can be determined provided that the
voltage and current are known
1、(A
temperature transducer ) is a device that a
voltage or a current proportional to the actual
temperature、
2、when the speed of the rotor
is zero, the ship of induction machine is (1、0)、
3、copper losses are(resistive) losses
in the primary and secondary windings of the
transformer
core、
4、residential and
commercial customers are supplied by the secondary
distribution feeders of
(220380v)、
5、the
frequency of a power system is determined mainly
by (active power generation and
consumption)、
1、many electrical signals derived from
physical systems are obtained from devices called
(transducers)、
2、the air-blast circuit
breaker makes use the arc-quenching properties of
(dry and clean compressed
air)、
3、in a
computer, most processing take place in a computer
called the (CPU)、
1、the difference between a
potential transformer and a power transformer is
that potential
transformer is designed to
handle only a very small current、
电压互感器与电力变压器得区别在于电压互感器被设计为只能处理很小得电流。
1、可就是尽管电压表与电流表之间有这些类似之处，但还有若干重要得差异。
However, in spite of all this similarity
between a voltmeter and an ammeter there are also
important difference、
2、在电压相同得情况下，导线得电阻越大，流过得电流就越小。
The greater
the resistance of a wire, the less electric
current will pass through it under the same
pressure、
3、利用发电机，可将机械能再转变成电能。
The
mechanical energy can be changed back into
electrical energy by means of a generator、
4、如果实用变压器，低电压得电力就能抓转换成高电压得电力
Using a
transformer ，power at low voltage can be
transformed into power at high voltage
1、 It
is conventional to take the current flow as the
movement of (positive charges)
2、 Electric
current is the time rate of charge, measured in
(amperes)、
3、 The energy required to move a
unit charge through an element is (voltage)、
4、 The plus (+) and minus (-) signs in an
electric circuit diagram are used to define
(voltage
polarity)、
5、 According to the
passive sign convention, if the power has a plus
sign, power is (absorbed) by
the element、
1、 An independent voltage source is a (two-
terminal element), which maintains a specified
voltage
between its terminals、
2、
Resistors are (passive) elements、
3、 An ideal
dependent source is an (active) element in which
the source quantity is controlled by
another
voltage or current、
4、 There are (four)
possible types of dependent sources、
5、 For a
voltage source, its terminal voltage is known but
its (current) must be determined by the
external circuit connecting with it
1、 The
voltage produced by a thermocouple pair is (an
analog) signal、
2、 ON-OFF information can be
represented by (a digital) signal、
3、 A device
that can convert an analog signal to the
corresponding digital form is called (AD)for
short、
4、 The thermocouple pair converts
temperature difference to a(voltage)、
5、 A DA is a device that can convert a
digital signal to the equivalent (analog form)、
1、 The process of quantizing the continuous
values into a binary scale is called (analog-to-
digital
conversion)、
2、 (A temperature
transducer)is a device that produces a voltage or
a current proportional to the
actual
temperature、
3、 The precision and the speed of
an ADC are essentially (incompatible)、
4、 The
precision of ADC is determined by (the number of
binary bits)、
5、 In Fig、2-4the amplifier
performs (two) functions、
1、 The thumb is in
the direction of (the relative motion of
conductor)in Fleming’s right-hand rule、
2、 In
induction motors the speed of the rotating rotor
(never reaches)the speed of the rotating
magnetic field、
3、 When the speed of the
rotor is zero, the slip of induction machine is
(1、0)、
4、 Form-wound coils are widely used for
(large AC) motors、
4-4(P84)
1、 A
transformer is a device that can converter one ac
voltage to another ac voltage through the
action of (a magnetic field)、
2、 The
primary winding is connected to (the power
source)、
3、 The core construction consisting
of a three-legged laminated core with the windings
wrapped
around the centre leg is called (shell
form)、
4、 The transformer that takes the
distribution voltage and steps it down to the
final voltage at
which the power is actually
used is called a (distribution transformer)、
5、 Copper losses are (resistive) losses in the
primary and secondary windings of the transformer
core、
5-1(P89)
1、 A computer works
automatically according to (a series of stored
instructions)
2、 A keyboard or a mouse is (an
input) device、
3、 The computer network for a
university is usually described as (a local area
network)、
4、 A computer that requests data
from a server is called as (client)、
5、 A hard
disk is referred to as (a storage) device、
5-4(P108)
1、 (A support module) can be
used in conjunction with the main software program
to provide an
auxiliary set instructions、
2、 A computers microprocessor only understands
(machine language)、
3、 Delphi belongs to
(high-level programming language)、
4、 An
operating system is considered as (system
software)、
5、 (The system) allocates and
manages secondary storage space and translates
from their
name-based form into specific IO
requests、
6-1(P118)
1、 The first complete
power system was built in (1882), it was (a DC)
power system、
2、 The first three-phase AC
transmission line in North America was put into
operation in (1893)、
3、 Power system
interconnections are usually formed at the
(transmission system) level、
4、 In North
American (60Hz) is adopted as standard frequency
in electric power system、
5、 (The HVDC
transmission) can provide an asynchronous link
between two ac electric power
systems with
different nominal frequencies、
6-2(P122)
1、 In power plants (prime
movers) convert the primary energy to mechanical
energy, and
(synchronous generators) convert
mechanical energy to electric energy、
2、 The
generator voltages are usually stepped up to the
transmission voltage level by (step-up
transformers)
3、 Residential and
commercial customers are supplied by the secondary
distribution feeders at
(220380V)、
4、 In
USA, the voltages of the transmission system are
typically (230kV and above)
6-3(P130)
1、
The objective of the optimal economic operation of
power systems is (to minimize the total
production cost)、
2、 The frequency of a
power system is determined mainly by (active power
generation and
consumption)、
3、 The
voltage levels at the terminals of generators are
controlled mainly by (automatic voltage
regulators)、
4、 When the system frequency
is changed away from the rating, (active power)
must be regulated、
5、 Regulation of the
generator’s speed governor can change its (active
power) output、
7-2(P148)
1、 At the fault
point in electrical equipment, there may be (all
of the above)、
2、 Among the following faults
on a transmission line, the most severe one is
usually the (3-0 fault)、
3、 Among the
following faults on a transmission line, the most
common one is the (single line to
ground
fault)、
4、 The most common fault in the
generator’s stator winding is (phase to ground
fault)、
5、 If generator overspeed occurs in a
thermal power plant, the action most possibly
undertaken is
(to shut off the steam)、
7-3(P152)
1、 The use of transformer oil in
a minimum-oil circuit breaker is (to quench the
arc and establish an
insulated break between
the contacts)
2、 A circuit breaker mainly
consists of (three) parts、
3、 The air-blast
circuit breaker makes use the arc-quenching
properties of (dry and clean
compressed air)、
4、 The reason that the SF
6
circuit
breaker is widely used is (the excellent arc
quenching and
insulating)、
5、 Vacuum-
bottle interrupters are designed for (higher
system voltage, current)、
8-2(P171)
1、 In
hydropower plants, (Francis turbines) are
frequently used for medium heads、
2、 During
times of the off-peak load, a pumped-storage plant
should (absorb energy from the
power network),
3、 The overall efficiency of a pumped storage
plant is usually about (65%~70%)、
4、 The
start-up speed of a hydropower plant is (faster
than) that of a thermal plant、
5、 The
hydropower is well suited for switching according
to (a dispatcher’s) an operator’s