Dien cong nghiep 09 mh09 moi official edited giao trinh dcn 11 doc 574

UBND TỈNH BÌNH ĐỊNH TRƯỜNG CAO ĐẲNG KỸ THUẬT CƠNG NGHỆ QUY NHƠN GIÁO TRÌNH TIẾNG ANH CHUYÊN NGÀNH NGHỀ: ĐIỆN CƠNG NGHIỆP TRÌNH ĐỘ: CAO ĐẲNG Ban hành kèm theo Quyết định số: 99 /QĐ-KTCNQN ngày 14 tháng năm2018 Hiệu trưởng Trường Cao đẳng Kỹ thuật Công nghệ Quy Nhơn Bình Định 2018 UBND TỈNH BÌNH ĐỊNH TRƯỜNG CAO ĐẲNG KỸ THUẬT CÔNG NGHỆ QUY NHƠN GIÁO TRÌNH TIẾNG ANH CHUN NGÀNH NGHỀ: ĐIỆN CƠNG NGHIỆP TRÌNH ĐỘ: CAO ĐẲNG Ban hành kèm theo Quyết định số: 99 /QĐ-KTCNQN ngày 14 tháng năm2018 Hiệu trưởng Trường Cao đẳng Kỹ thuật Cơng nghệ Quy Nhơn Bình Định, năm 2018 STATEMENT OF AUTHORSHIP As a book specially used in schools and colleges, this coursebook can be copied partially or completely for the purposes of education and training No part of the book is used for other purposes INTRODUCTION This is a coursebook which is specially designed for industrial electrical students The information taken from reliable sources such as Oxford Advanced learner’s Dictionary, Electric Motors and Control Systems by Frank D Petruzella, published byPublished by McGraw-Hill, Oxford English for Electrical and Mechanical Engineering by Eric H Glendinning, Norman Glendinning, published by Oxford University Press etc In addition, this textbook matches the syllabus for English for industrial electrical Engineering passed by the Syllabus Assessment Council in June 2017 This coursebook consists of UNITS for 90 hours of class time, each of which is made up of the following parts: Introduction gives a general information about the skills that students are required to gain Learning Outcomes states what students will be able to by the end of the lesson Relevant knowledge provides the students with knowledge relevant to the skills they aim to achieve Order of Steps shows the procedure the students should follow to achieve the skills Practice offers the students a number of tasks to practice so that they can acquire the new skills We would like to show our deep thanks and gratitude to the teachers in the departments of Quy Nhon College of Engineering and Technology, especially the teachers from the Electricity Department, who are enthusiastic to help us write the book Although we have tried our best to produce a good book, mistakes are unavoidable Therefore, we would appreciate any comments you might have to improve the book Thank you! Bình Định, August 2018 Author Bui Thi Thu Ha STATEMENT OF AUTHORSHIP INTRODUCTION LIST OF FIGURES AND TABLES UNIT Describing Hand Tools 12 1.1 Relevant knowledge 12 1.1.1 Vocabulary 12 1.1.2 Grammar: 14 1.2 Order of Steps 14 1.3 Practice 15 1.3.1 Practice 15 1.3.2 Practice 16 1.3.3 Practice 16 1.3.4 Extra Practice .Error! Bookmark not defined UNIT 18 2.1 Relevant knowledge: 18 2.1.1 Vocabulary 18 2.1.2 Grammar 20 Defining relative clauses 20 2.2 Order of Steps 21 2.3 Practice 21 2.3.1 Practice 21 2.3.2 Practice 23 2.3.3 Practice 24 2.3.4 Extra Practice 25 UNIT 27 3.1 Relevant knowledge 27 3.1.1 Vocabulary 27 3.1.2 Reading for specific information .30 3.2 Order of steps 30 3.3 Practice 31 3.3.1 Practice 31 3.3.2 Practice 31 3.3.3 Practice 33 3.3.4 Extra Practice 34 UNIT 36 4.1 Reading for General Information about “The Electric Motor” 37 4.1.1 Relevant knowledge 37 4.1.2 Order of Steps 38 4.1.3 Practice 38 4.2 Reading for Specific Information about “The Electric Motor” 40 4.2.1 Relevant knowledge 40 4.2.2 Order of steps 41 4.2.3 Practice 41 UNIT 45 5.1 Reading for general information about circuit elements 45 5.1.1 Relevant knowledge 45 5.1.2 Order of steps 45 5.1.3 Practice 45 5.2 Reading for Specific information about circuit elements 47 5.2.1 Relevant knowledge 47 5.2.2 Order of steps 49 5.2.3 Practice 49 UNIT 51 6.1 Relevant knowledge 51 6.2 Order of steps 53 6.3 Practice 53 REFERENCES 56 LIST OF FIGURES AND TABLES Fig.1 page 11 Fig.2 page 21 Fig.3 page 33 Fig.4 page 35 Fig.5 page 38 Fig.6 page 39 Fig.7 page 41 Fig.8 page 42 Fig.9 page 44 Fig.10 page 45 Fig.11 page 53 Fig.12 page 53 LIST OF ABREVIATIONS Adjective Adverb Industrial Electrical Engineering Industrial Electrical students Noun noun phrase phrasal verb Preposition Verb adj adv IEE IES n nph phv Pre v COURSEBOOK Module: English for Industrial Electrical Engineering (IEE) Module code: MH 09 Position and characteristics of the module: − Position: This modulet is scheduled prior to the occupational ones in the curriculum − Characteristics: It is a compulsory module in the curriculum of the IEE − Role: This is an important module which equips the learners useful knowledge about English for IEE and basic skills of reading and writing technical texts, especially about English for Industrial Electrical Engineering so thatthe learners have opportunities to update the current knowledge of their major as well as to be able to work abroad The learning outcomes of the module: − Skills: Knowledge: To be able to use basic English terms for IEE and explain the common grammatical structures in IEE − Skills: + To be able to use reading strategies to comprehend English texts on IEE + To be able to write simple sentences aboutIEE − Ability of self-management and responsibility: + To develop an attitude of creativity, responsibility and autonomy as demonstrated by students with a strong sense of curiosity, commitment, and independence + To be able to work individually and in a team The content of the module Thời gian (giờ) Số TT Tên mô đun UNIT Describing Hand Tools Relevant knowledge 1.1 Vocabulary 1.2 Grammar: 1.2.1 HAVE/HAS 1.2.2 To be used to and To be used for Order of Steps Practice 3.1 Practice Tổng số Lý thuyết Thực hành, thí nghiệm, thảo luận, tập 16 8 Kiểm tra* 3.2 Practice 3.3 Practice 3.4 Extra Practice Assess students’ competence Keep in mind UNIT Defining Common Terms in Technical Engineering and Control Panel Relevant knowledge: 1.1 Vocabulary 1.2 Grammar: Defining relative clauses Order of steps Practice 3.1 Practice 3.2 Practice 3.3 Practice 3.4 Extra Practice Assess students’ competence Keep in mind UNIT Reading for Specific Information about Safety Signs Relevant knowledge 1.1 Vocabulary 1.2 Reading for specific information Order of steps Practice 3.1 Practice 3.2 Practice 3.3 Practice 3.4 Extra Practice Assess students’ competence Keep in mind TEST 15 16 14 7 UNIT Reading for General and Specific Information about the Electric Motor Reading for General Information about the Electric Motor 1.1 Relevant knowledge 1.1.1 Vocabulary 1.1.2 Skimming 1.2 Order of Steps 1.3 Practice 1.4 Assess students’ competence 45 Fig.7 Practice Complete the text with the help of the diagram above using the following words: is connected is placed made up of known as called consists of A simple dc motor (1) a field magnet and an armature The armature (2) between the poles of the magnet The armature is (3) a loop of wire and a split ring (4) a commutator The loop (5) to the commutator Current is supplied to the motor through carbon blocks (6) brushes Practice Complete the text with the help of the diagram in Fig.8 Use the following words: are made up is placed is composed consist A transformer …………………… of two coils, a primary and a secondary The coils are wound on a former which is mounted on a core The coils …………………… of a number of loops of wire The core …………………… of thin pieces of soft iron U- and T-shaped pieces are used The former …………………… on the leg of the T Now label the diagram in Fig.8 using the completed text 46 Fig.8 * Assessment - Assessment consists of the completion of the tasks in this unit and the students’ performance in reading comprehension *Review questions What steps should you follow to skim a passage? What are the main parts of an electric motor? 47 UNIT READING FOR GENERAL AND SPECIFIC INFORMATION ABOUT CIRCUIT ELEMENTS UNIT CODE: MH 09-05 Time: 14 hours (Theory: 07, Practice: 07) Introduction: Basic knowledge about electric circuits is very necessary for students of Industrial Electrical Engineering (IEE) This knowledge is available in plenty of English documents Therefore, how to read for general and specific informationabout circuit elements is useful to them This unit will show them how to acquire this skill Learning Outcomes: − Name the basic elements in a circuit (a source, a load, a transmission system and a control) and describe their functions; − Use reading strategies to read a text about circuit elements and explain the functions of each element − To be active, hard-working in their studies and strictly apply the strategies while doing practice Main Content: 5.1 Reading for general information about circuit elements 5.1.1 Relevant knowledge Vocabulary Control/kənˈtrəʊl/ Correct/kəˈrekt/ electric circuit Function/ˈfʌŋkʃn/ Heading/ˈhedɪŋ/ Load/ləʊd/ Match/mætʃ/ Paragraph/ˈpærəɡrɑːf/ Source/sɔːs/ Transmission system (n) (adj) (np) (n) (n) (n) (v) (n) (n) (np) Bộ điều chỉnh Mạch điện Chức Tiêu đề, đề mục Tải, trọng tải Làm cho phù hợp Đoạn văn Nguồn Hệ thống truyền dẫn 5.1.2 Order of steps Step Read the first sentence of each paragraph or the topic sentences Step Drop down through the rest of the paragraph, looking for important pieces of information, such as names, dates, or events, until you are near the end Step Stop skimming there and read in detail since the last few paragraphs may contain a conclusion or summary 48 5.1.3 Practice Read the following passage and then match a heading with a correct paragraph The function of the control The function of the source What is an electric circuit? The function of the transmission system The function of the load CIRCUIT ELEMENTS A Current moves from a point of high potential energy to oneof low potential It can only so if there is a path for it to follow This path is called an electric circuit All circuits contain four elements: a source, a load, a transmission system and a control B The source provides the electromotive force This establishes the difference in potential which makes current flow possible The source can be any device which supplies electrical energy For example, it may be a generator or a battery C The load converts the electrical energy from the source into some other form of energy For instance, a lamp changes electrical energy into light and heat The load can be any electrical device D The transmission system conducts the current round the circuit Any conductors can be part of a transmission system Most systems consist of wires It is often possible, however, for the metal frame of a unit to be one section of its transmission system For example, the metal chassis of many electrical devices are used to conduct current Similarly, the body of a car is part of its electrical transmission system E The control regulates the current flow in the circuit It may control the current by limiting it, as does a rheostat, or by interrupting it, as does a switch 49 Fig.9 F Study Figure In this simple flashlight circuit, the source comprises three 1.5 V cells in series The load is a 0.3 W bulb Part of the transmission system is the metal body of the flashlight, and the control is a sliding switch Fig.10 G Compare Fig.10 The function of this circuit is to operate a television camera aboard a space satellite Here the source is a battery of solar cells A solar cell is an electric cell which converts sunlight into electrical energy The load is the television camera The transmission system is the connecting wires The control is a relay actuated by transmissions from ground control Although the function of this circuit is much more complex than that of the flashlight, it consists of the four basic elements 5.2 Reading for Specific information about circuit elements 5.2.1 Relevant knowledge Vocabulary Aboard/əˈbɔːd/ Actuate/ˈæktʃueɪt/ Basic/ˈbeɪsɪk/ Battery/ˈbætri//ˈbætəri/ Body/ˈbɒdi/ Bulb/bʌlb/ Cell/sel/ Change/tʃeɪndʒ/ Chassis/ˈʃæsi/ Circuit/ˈsɜːkɪt/ Compare/kəmˈpeə(r)/ Complex/ˈkɒmpleks//kəmˈpleks/ Comprise/kəmˈpraɪz/ (adv) (v) (adj) (n) (n) (n) (n) (v) (n) (n) (v) (adj) (v) Trên tàu, xe, máy bay Làm khởi động Cơ Pin, ắc-quy Thân (máy, xe, tàu ) Bóng đèn pin Làm biến đổi Khung gầm (ô tô ) Mạch điện So sánh Phức tạp Gồm có, bao gồm 50 Conduct/kənˈdʌkt/ Conductor/kənˈdʌktə(r)/ Consist of Contain/kənˈteɪn/ Convert/kənˈvɜːt/ Current/ˈkʌrənt/ Device/dɪˈvaɪs/ Difference/ˈdɪfrəns/ electrical energy electromotive force Element/ˈelɪmənt/ Energy/ˈenədʒi/ Establish/ɪˈstæblɪʃ/ Figure/ˈfɪɡə(r)/ Flashlight/ˈflæʃlaɪt/ Flow/fləʊ/ Follow/ˈfɒləʊ/ For instance Form/fɔːm/ Frame/freɪm/ Generator/ˈdʒenəreɪtə(r)/ Ground/ɡraʊnd/ Heat/hiːt/ Interrupt/ˌɪntəˈrʌpt/ Lamp/læmp/ Light/laɪt/ Limit/ˈlɪmɪt/ Low/ləʊ/ Metal/ˈmetl/ Operate/ˈɒpəreɪt/ Part/pɑːt/ Path/pɑːθ//pỉθ/ Point/pɔɪnt/ Possible/ˈpɒsəbl/ Potential/pəˈtenʃl/ Provide/prəˈvaɪd/ Regulate/ˈreɡjuleɪt/ Relay/ˈriːleɪ//rɪˈleɪ/ Rheostat/´ri:ə¸stỉt/ Section/ˈsekʃn/ Series/ˈsɪəriːz/ Similarly/ˈsɪmələli/ Simple/ˈsɪmpl/ Sliding /’slaɪdɪŋ/ Solar cell/ˌsəʊlə ˈsel/ (v) (n) (phrv) (v) (v) (n) (n) (n) (np) (np) (n) (n) (v) (n) (n) (v) (v) (idm) (n) (n) (n) (n) (n) (v) (n) (n) (v) (adj) (n) (v) (n) (n) (n) (adj) (n) (v) (v) (n) (n) (n) (n) (adv) (adj) (n) (np) Dẫn (điện, nhiệt ) Chất dẫn điện, nhiệt Gồm có Gồm có Biến đổi Dịng điện Thiết bị, dụng cụ Sự khác Điện Sức điện động Phần tử Năng lượng Thiết lập Hình vẽ minh họa Đèn pin Chảy Theo sau Ví dụ Hình thức khung Máy phát điện Mặt đất Nhiệt Làm gián đoạn đèn Ánh sáng Giới hạn Thấp Kim loại Vận hành, điều khiển Thành phần Đường dẫn Điểm Có thể Điện Cung cấp Kiểm soát, điều chỉnh Rơ-le Cái biến trở Phần, khu vực Mạch nối tiếp Tương tự Đơn giản Sự trượt Pin mặt trời 51 space satellite Supply/səˈplaɪ/ Switch/swɪtʃ/ System/ˈsɪstəm/ Torch/tɔːtʃ/ W Wire/ˈwaɪə(r)/ (np) (v) (n) (n) (n) (abre) (n) Phi thuyền không gian Cung cấp Công tắc Hệ thống Đèn pin (điện học) oát (watt) Dây kim loại 5.2.2 Order of steps Step Identify the information you need Step Locate the relevant information in the text - Move very quickly over the text When you locate the the information, read the surrounding text carefully to see if it is relevant Step Determine if the answer you found answers this question - Re-read the question and the relevant information in the text - Write/choose the correct answer Step 4: Move on to the next question and follow the same way 5.2.3 Practice Practice Decide if these statements are true or false True False a A difference in potential is required before current can flow in a circuit b A generator is a device which supplies electrical energy c Loads convert electrical energy into light and heat d Transmission systems must consist of wires e A rheostat may be used as a control f The load in the flashlight circuit is a bulb g The source in the satellite circuit is a solar cell h The flashlight circuit differs basically from the satellite circuit Practice Replace the words in italics with expressions from the passage which have similar meanings a A lamp converts electrical energy into light b The generator provides the circuit with electromotive force c The metal frame of the oscilloscope is part of its transmission system d The rheostat controls the current flow in the circuit e A battery of solar cells supplies power to the circuit 52 Practice What the pronouns in italics in these sentences refer to? Current moves from a point of high potential energy to oneof low potential (a) current (b) energy (c) a point For example, it may be a generator or a battery (a) the source (b) a device (c) electromotive force It is often possible, however, for the metal frame of a unit to be one section of its transmission system (a) the metal frame’s (b) the unit’s (c) the circuit’s Although the function of this circuit is much more complex than that of the flashlight, itconsists of the four basic elements (a) this circuit (b) the function (c) the flashlight Practice Complete the sentences below using these words Circuit electromotive force flow activating transmission system solar convert individual a Electric current flows in a closed path called an electric ………………………… b The body of a car is part of its electrical……………………………… c ……………………is the potential difference in charge between two points in a circuit d ……………… cells use sunlight to produce electricity e What device is used to …………….electrical energy to sound energy? f How does electricity ……………….in circuits with more than one component? g A relayresponds to a small current or voltage change by …………switches or other devices in an electric circuit h When electric cells are connected in series the total electromotive force (emf) is the addition of …………….cell emf * Assessment - Assessment consists of the completion of the tasks in this unit and the students’ performance in reading comprehension * Review questions How many elements are there in a circuit and what are they? What are their functions 53 UNIT READING FOR SPECIFIC INFORMATION ABOUT MOTOR CONTROL CENTERS (MCCS) UNIT CODE: MH 09-06 Time: 15 hours (Theory: 07, Practice: 07, Test: 01) Introduction: Motor control centers have become the wise choice to supply a convenient, economical enclosure for motor control and branch-circuit protection in commercial and industrial facilities They are a key item in many commercial and industrial applications Therefore, students of Industrial Electrical Engineering should be equipped with basic knowledge about motor control centers.How to read for specific information about these Motor control centers is useful to them This unit will show them how to acquire this skill Learning Outcomes: − Name the general structure of motor control centers and typical motor control center unit types; − Use reading strategies to read a text about Motor control centers − To be active, hard-working in their studies and strictly apply the strategies while doing practice Main Content: 6.1 Relevant knowledge Vocabulary AC (Alternating current)/ˌeɪ ˈsiː/ Accommodate/əˈkɒmədeɪt/ Analog/ˈænəlɒɡ/ Assembly/əˈsembli/ Association/əˌsəʊʃiˈeɪʃn/ /əˌsəʊsiˈeɪʃn/ At times Bus/bʌs/ Called/kɔːld/ Case/keɪs/ Centre/ˈsentə(r)/ Central/ˈsentrəl/ circuit breaker/ˈsɜːkɪt breɪkə(r)/ Circuitry/ˈsɜːkɪtri/ (np) (v) (n) (n) (n) idm (n) (adj) (n) (n) (adj) (np) (n) Dòng điện xoay chiều Cung cấp không gian Vật tương tự Bộ phận lắp ráp Hội, hiệp hội Thỉnh thoảng buýt Được gọi Trường hợp Trung tâm trung tâm Cầu dao tự động Mạch điện 54 Combination/ˌkɒmbɪˈneɪʃn/ Combine/kəmˈbaɪn/ Commercial/kəˈmɜːʃl/ Commission/kəˈmɪʃn/ Compact/kəmˈpækt/ /ˈkɒmpækt/ Compartment/kəmˈpɑːtmənt/ Composed of/kəmˈpəʊzd/ Construct/kənˈstrʌkt/ Contactor/kənˈtræktə(r)/ Contain/kənˈteɪn/ Control/kənˈtrəʊl/ Controller/kənˈtrəʊlə(r)/ Convenient/kənˈviːniənt/ Design/dɪˈzaɪn/ Determine/dɪˈtɜːmɪn/ Disconnect/ˌdɪskəˈnekt/ Distribute/dɪˈstrɪbjuːt/ /ˈdɪstrɪbjuːt/ Electrotechnical Enclosure/ɪnˈkləʊʒə(r)/ (n) (v) (adj) (n) (adj) ((n)) Phrv (v) (n) (v) (v) (n) (adj) (v) (v) (v) (v) (adj) (n) Europe/ˈjʊərəp/ Feeder/ˈfiːdə(r)/ floor-mounted Frequency /ˈfriːkwənsi/ Fusible/´fju:zibl/ Horsepower/ˈhɔːspaʊə(r)/ house IEC (International Electrotechnical Commission) Illustrate/ˈɪləstreɪt/ Incoming/ˈɪnkʌmɪŋ/ Industrial/ɪnˈdʌstriəl/ Installation/ˌɪnstəˈleɪʃn/ Isolated/ˈaɪsəleɪtɪd/ Limited/ˈlɪmɪtɪd/ Load/ləʊd/ Location/ləʊˈkeɪʃn/ (n) (adj) (adj) (n) (adj) (n) (v) (np) made up of Magnetic/mæɡˈnetɪk/ Manufacturer/ˌmænjuˈfæktʃərə(r)/ Meter/ˈmiːtə(r)/ Modular/ˈmɒdjələ(r)/ Motor/ˈməʊtə(r)/ Phrv (adj) (n) (v) (adj) (n) (v) (adj) (adj) (n) (adj) (adj) (n) (n) Sự kết hợp Kết hợp Thuộc thương mại ủy ban Gọn nhẹ Gian, ngăn Gồm có Xây dựng Khởi động từ Bao gồm Điều khiển Bộ điều chỉnh Tiện lợi Thiết kế Xác định Cắt, ngắt Phân phối (thuộc) kỹ thuật điện Khu vực có rào bao quanh Châu Âu Cấp nguồn Gắn sàn Tần số Nóng chảy Mã lực Cho ở, chứa Ủy ban Kỹ thuật Điện Quốc tế Minh họa Đến, vào Thuộc công nghiệp Sự lắp đặt Biệt lập Hạn chế Tải Địa điểm, (thuộc) phận tháo rời Gồm có Có từ tính Nhà sản xuất đo Thuộc mơ-đun, Động cơ, mơ-tơ 55 motor control center (n) motor starter Mount/maʊnt/ National/ˈnæʃnəl/ NEMA (National Electrical Manufacturers Association) (np) (v) (adj) (np) Network/ˈnetwɜːk/ Outgoing/ˈaʊtɡəʊɪŋ/ Overcurrent/´ouvə¸kʌrənt/ Overload/ˌəʊvəˈləʊd/ Place/pleɪs/ plug-in/ˈplʌɡ ɪn/ Power/ˈpaʊə(r)/ Programmable/ˈprəʊɡrỉməbl//prəʊˈɡrỉməbl/ Principally/prəʊˈɡrỉməbl/ Protection/prəˈtekʃn/ Rating/ˈreɪtɪŋ/ Require/rɪˈkwaɪə(r)/ Safety/ˈseɪfti/ Section/ˈsekʃn/ Size/saɪz/ Soft /sɒft/ Solid-state/ˌsɒlɪd ˈsteɪt/ Space/speɪs/ Specifically/spəˈsɪfɪkli/ Starter/ˈstɑːtə(r)/ Structure/ˈstrʌktʃə(r)/ Support/səˈpɔːt/ Switch/swɪtʃ/ Transformation/ˌtrænsfəˈmeɪʃn/ Transformer/trænsˈfɔːmə(r)/ Trough/trɒf/ Type/taɪp/ Typical/ˈtɪpɪkl/ Unit/ˈjuːnɪt/ Variable/ˈveəriəbl//ˈværiəbl/ Vertical/ˈvɜːtɪkl/ (n) (adj) (n) (n) (v) (adj) (n) (adj) (adv) (n) (n) (v) (n) (n) (n) (adj) (adj) (n) (adv) (n) (n) (v) (n) (n) (n) (n) (n) (adj) (n) (adj) (adj) Tủ điện điều khiển trung tâm Bộ khởi động động Gắn Thuộc quốc gia Hiệp hội nhà sản xuất thiết bị điện quốc gia Mỹ Mạng lưới Đi Dòng điện siêu tải Sự tải Để, đặt nối vào, cắm vào Công suất, lượng Có thể lập trình Chủ yếu Sự bảo vệ Mức Yêu cầu, cần đến Sự an toàn Khu vực Kích cỡ Mềm Chỉ dùng bán dẫn Khoảng trống Đặc trưng, riêng biệt Bộ khởi động Kết cấu Chống, đỡ Công tắc Sự biến đổi Máy biến máng Kiểu Điển hình Đồ đạc, thiết bị Có thể biến đổi Thẳng đứng 6.2 Order of steps Step Identify the information you need Step Locate the relevant information in the text - Move very quickly over the text When you locate the the information, read the surrounding text carefully to see if it is relevant 56 Step Determine if the answer you found answers this question - Re-read the question and the relevant information in the text - Write/choose the correct answer Step 4: Move on to the next question and follow the same way 6.3 Practice Practice Read the following passage and replace the words in italics with expressions from the passage which have similar meanings a At times a commercial or industrial installation will require that many motors be controlled from a central location b Figure 3-16 illustrates a typical motor control center made up of a compact floor-mounted assembly c The control center is typically constructed with one or more vertical sections, with each section having a number of spaces for motor starters d The structuresupports and houses control units, a common bus for distributing power to the control units, and a network of wire troughs for accommodating incoming and outgoing loadand control wires e Each unit is mounted in an individual,isolated compartment having its own door At times a commercial or industrial installation will require that many motors be controlled from a central location When this is the case, the incoming power, control circuitry, required overload and overcurrent protection, and any transformation of power are combined into one convenient center This center is called the motor control center A motor control center is a modular structure designed specifically for plug-in type motor control units Fig.11 illustrates a typical motor control center made up of a compact floor-mounted assembly, composed principally of combination motor starters that contain a safety switch and magnetic starter placed in a common enclosure The control center is typically constructed with one or more vertical sections, with each section having a number of spaces for motor starters The sizes of the spaces are determined by the horsepower ratings of the individual starters Thus, a starter that will control a 10-hp motor will take up less room than a starter that will control a 100-hp motor A motor control center is an assembly primarily ofmotor controllers having a common bus The structuresupports and houses control units, a common bus for distributing power to the control units, and a network of wire troughs for accommodating incoming and outgoing loadand control wires Each unit is mounted in an individual,isolated compartment having its own door 57 Fig.11 Practice Read the passage again and mark the letter A, B, C or D to indicate the correct answer to each of the questions Which is NOT typically combined into a motor control center? a incoming power, control circuitry b Light bulb c transformation of power d overload and overcurrent protection What is a motor control center specifically built for? a individual motor control units b full-voltage motor control units c plug-in-type motor control units d drawer-type motor control units What the combination motor starters in the motor control center in Figure 3-16 consist of a a safety switch and magnetic starter b Soft starters and a magnetic starter c A compact floor-mounted assembly and a safety switch d Transformers and Contactors The control center is generally built with one or more sections a horizontal b.small c main d.vertical The sizes of the spaces are determined by the .ratings of the individual starters a ampere b Horsepower c amplitude d ohm 58 What does the word “hp” in the passage mean? a Horsepower b ampere c ohm d amplitude The bus that an motor controller assembly in amotor control center has is a a memory bus b data bus c system bus d common bus What is a common bus used for? a For connecting all the internal components of amotor control center b For transferring data between components inside amotor control center c for distributing power to the control units d For connecting the different external devices What does a network of wire troughs do? a It accommodates incoming and outgoing loadand control wires b Its delivers incoming and outgoing loadand control wires c It provides enough space for incoming and outgoing loadand control wires d a & c 10 Where is each unit mounted? a in an individual,isolated compartment without a door b in an individual,isolated compartment with its own door c in a shared compartment having its own door d b & c * Assessment - Assessment consists of the completion of the tasks in this unit and the students’ performance in reading comprehension * Review questions What can motor controlcenters accommodate? What typical motor control center unit types you know? 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