Questions for revision- English for mechanical engineering I Tr¾c nghiƯm Brass is an …………………of copper and zinc A alloy B avoid C mixture D part Aluminum, copper and bronze don’t contain iron They are …………metals A iron B not iron C ferrous D non ferrous Metals which contain some proportion of iron may be attacked by………… A other metals B corrode C rust D rustion High-purity metal are more resistant than…………………… A alloys B iron C metals D ferrous metals What is the width of the bolt? It is 2cm…………………… A wide B width C in wide D at width A diesel engine is an engine which uses…………… A oil B diesel C diesel oil D diesel petrol Which view is taken to show the most important or descriptive face? A front view B left view C top view D bottom view The view obtained by looking at the object from below is called………… A front view B left view C top view D bottom view An industrial drawing comprises several separately placed figures known as……… A observers B views C directions D figures 10 The view in drawing is the image of the face of the ………………closest to the observer A observer B object C obtain D subject 11 What we call the tolerance which allows deviations from it in both sides? A two side B unilateral C bilateral D one side 12 Designer who work with CAD don’t need to produce drawings on………… A computer B picture C figure D paper 13 What is one ten thousand mean? A.10,000 B 1000/10 C 1/10000 D 10/1000 14 Which is used primarily to measure the hole diameter? A outside caliper B inside caliper C hermaphrodite D caliper caliper 15 In ………… the smallest hole is bigger than the largest shaft A interference fits B clearance fits C mating parts D engineering 16 The interior fitting parts are known as ……………………… A shafts B dimension C diameter D holes 17 The person who creates new products on paper or with CAD is a/an…………………… A design engineer B installation engineer C production engineer D technician 18 A tensile force is a force which can……….a body A compress B push C make D extend 19 Physical quantities are divided into groups- scalar and vector quantities A added B classified C subtracted D multiplied 20.The length of the vector is ……………to the magnitude of the force it represents A proportional B opposite C equal D longer 21 The intensity of stress depends on ………………… A c.s.a B size of the force C stress D both A and B 23 Distortion due to stress is called…………………… A strain B stress C stress and strain D tensile 23 Mild steel is …………… material A a plastic B an elastic C a tough D a corrosion-resistant 24…………material can regain its shape and size after the forces are removed A rigid B elastic C tough D plastic 25 A/An……….substance can be used to wear away a soften material A formable B organic C abrasive D ductile 26 If a material is …………….it will tend to fracture under impact loads A rigid B brittle C hard D elastic 27 The point ………… the body is free to rotate is called the fulcrum A which B in which C about which D that 28 The point where the effort is applied to a lever is called A effort end B load end C fulcrum D rest end 29 A bent shaft for transmitting motion , changing from reciprocating to rotary and vice versa is ………… A an axle B an arm C a crank D a lever 30 The turning effect of a force about a fulcrum is known as the…………of the force A moment B product C rotary D effect 31 The perpendicular distance between the force’s line of action and its fulcrum are measured A right distance B left distance C distance at right D distance at left angle angle 32 Cast iron is a mixture of………… A steel and iron B iron and bronze C carbon and iron D steel and carbon 33 The force of attraction exerted by huge mass of the earth is called………………… A natural force B gravity C stress D strain 34 What takes place when austenite transforms into ferrite and cementite? A hardening B quenching C transformation D two-step change 35 The value of the constant of each elastic material is called the……………… A modulus of elastic B elastic modulus C modulus of D elasticity modulus elasticity 36 Compression moulding is a common method……………thermosets A to shape B for shape C for shaping D both A & C 37 Levers………….according to the relative positions of the load, the effort and the fulcrum A classify B is classified C are classified D classified 38 A force ……………to the roller to keep it in equilibrium A must be applied B must apply C must applied D apply 39 Heat treatment ………… as the heating and cooling of metals to alter their properties A is defined B are defined C define D defined 40 Alloys made from copper and nickel are……………… A corrosion-resistance B resist corrosion C corrosion-resistant D corrosion 41 To manufacture complicated products, we need large sum of money A no B little C a lot of D not 42 In order to manufacture at low cost, everything must be taken care of……………….the real manufacture A after B before C in D of 43 The …………….is the first step in manufacturing A first model B original concept C revised model D none is correct 44 Unless mild steel is painted, it ……………rust A will B won’t C is D are 45 If the doors…………………… a lift will not operate A aren’t close B is close C are close D isn’t close 46 A machine which is used to grind a material is called a ………………… A drill B drilling machine C grind D grinding machine 47 Numerical control means control…………………… A by maths B in maths C in numbers D by numbers 48 Which medium actually control the motion of numerical control machine tools? A electric system B electronic system C.electromechanical D mechanical system system 49 What is one of the principle advantages of numerical control? A money reduction B time reduction C time increase D money increase 50 Brass is an …………………of copper and zinc A alloy B avoid C mixture D part 51 Aluminum, copper and bronze are …………metals A iron B not iron C ferrous D non ferrous 52 When using NC machine tools, the amount of human error is greatly……………… A increased B decreased C stay stable D the same 53 Thermoset is ………… A metal B non-metal C ferrous D non-ferrous 54 Thermoplastics and thermosets are………………… A metals B non metals C ceramics D iron 55 Ceramics can not stand high temperature A true B false C no information D x 56 Corrosion is any chemical actions……………….harm the properties of a metal A of which B that C who D this 57 Stainless steel are usually known as ……………… metal A corrosionB corrosionC corrode-resistant D corroderesistant resistance resistance 58 Galvanic corrosion is the same as……………….corrosion A chemical B electronic C mechanical D electric 59 The thin layer of ……………….on the surface of the metal protects them from corrosion A aluminum B chromium C oxide D chromium oxide 60 Engineer have to make sure that two……………….metals are not allowed to touch together A similar B like C dissimilar D same 61 When aluminum sheets are riveted with copper rivets, the aluminum near the rivets will…………… in damp condition A corrode B corrosion C corrodes D not corrode 62 What is the width of the metal plate? It is 3m…………………… A wide B width C in wide D at width 63 A diesel engine is an engine which uses…………… A oil B diesel C diesel oil D diesel petrol 64 Plastics are available in many form …………………sheets, tubes, robs A such B such as C so D so that 65 Plastics have ………… to atmospheric corrosion A resist B resistant C resistance D resistion 66 Thermoplastics will soften when……….and harden when……… A heated/cooled B cooled/heated C hot/cool D cool/hot 67 What happen after the steel has been treated to the austenitic state? A take place B take on C produce D deal 68 Heat treatment is the heating and cooling of metals to change their properties A qualities C wealth D riches B characteristics 69 To ……….steel, it must be cooled rapidly after being put into the austenitic condition A hard B harder C more hard D harden 70 There are two possible ways of indicating the limit permitted for……………from the stated basic size A variation B deviation C accuracy D error 71 The design of the measuring tools are very sophisticated A simple B complex C easy D difficult 72 This section will deal with the measuring tools A dear B work with C solve D tell 73 Machinists and tool makers use measuring tools in the everyday performance of their trade A workers B engineers C workers working D workers who with machines produce machines 74 All precision measuring tools must be handle with care in order to avoid damage to them B similarity C exactly D true A accuracy 75 Which is used primarily to measure the hole diameter? A outside caliper B inside caliper C hermaphrodite D caliper caliper 76 What must the workman depend upon in order to make accurate measurement? A sense of feel B tip of finger C finger D skin 77 Which is used to measure the distance between a surface and a scribed line? A hermaphrodite B out side caliper C inside caliper D telescoping gage caliper 78 Which has two contact plungers? A outside caliper B inside caliper C telescoping gage D small hole gage 79 Bilateral tolerance is specified as a…or minus deviation from the basic dimension A add B include C plus D zero 80 The maximum and minimum dimension resulting from the application of the designated tolerance are called …………….dimension A deviation B limit C accuracy D bilateral 81 Allowance is the intentional, desired difference in ………… of two mating parts A dimension B limit C accuracy D deviation 82 In ………… fits, the largest shaft is smaller than the smallest hole A interference B clearance C inside D outside 83 In interference fits, the hole is ………….than the shaft A bigger B taller C larger D smaller 84 Workmen use their tip of fingers to decide the …………….of the tools A dimension B accuracy C maximum D minimum 85 The steel bar has a …………… of meters A long B in long C length D in length 86 The belt is sixty millimeters……… A in wide B in width C width D of wide 87 The electricity pylon is 25 meters………………… A height B high C in high D of height 88 What is the …………… of the oil tank? A deep B in deep C in depth D depth 89 Plastics are used to make a great variety of product………textiles…engineer A such/as B so/that C from/of D from/to 90 Plastics are used widely in engineering……………they are cheap A because B because of C so that D therefore 91 Plastics have resistance to atmospheric corrosion, ……they are not particularly strong A because B because of C however D more over 92 Friction is essential in brakes…………… it is a nuisance in an engine, A so B however C because D therefore 93 Numerical control machine tools are very useful……….they are used to machine parts in small and medium quantities A therefore B because C but D however 94 Numerical control machine tools can machine difficult shapes by means of a A robot B automatic system C tracer controlled D NC controlled unit unit 95Mechanism is a component of machine that transmit or change…………… A force B effort C motion D movement 96 Parts which have teeth that can engage another wheel with teeth are called…………… A bearings B pinions C jacks D gears 97 An elastic material that returns to it original shape after being force out of that shape is………… A gear B bearing C spring D cam 98 The bearings which contain small round balls and sometimes known as anti-friction are……………… A ball bearings B roller bearings C needle bearings D non-contact bearings 99 Bearings that touch only at rest, in motion they are separated by gas are called………… A ball bearings B non-contact bearings C roller bearings D needle bearings 100 …………is motion in a straight line and goes back and forth in the same path A linear motion B rotary motion C translation D reciprocating motion 101 An international metric measure of power equal to one joule per second is known as ……… A Watt B Newton C Kilowatt D power 102 There are two main kinds of motion in engineering, they are rotary and ………….motion A linear B straight C reciprocating D circular 103A twisting force that produces torsion or rotary motion is …………… A compressive force B tensile force C torque D effort 104 Machines whose input is a natural source of energy are called………… A machine tools B movers C machinists D prime movers 105 Force must always occurs in……………… A couple B pair C two D twice 106 The resistance to motion when one body is rotating but not on the same axis is…… A sliding friction B static friction C rolling friction D stop friction 107 In engineering, drilling machines, milling machines and lathes are called………… A numerical controls B machine tools C NC machines D transfer types 108 Which medium actually controls the motions of numerical controlled machine tools? A electric system B electronic system C electromechanical D mechanical system system 109 Friction is sometimes a help……………it is a hindrance A but B so C therefore D and 110 Oil is used for bearing………… it is self-lubricating A but B however C so D because 111 A wheel with teeth that can engage another wheel with teeth to transmit or change motion is called………… A bearing B gearing C gear D wheel and axle 112 Friction is the …… to relative motion of two bodies in contact with each other A resist B resistance C resistant D.resistation 113 Which two factors must be specified in order to obtain the desired fit between mating parts? A allowance and B allowance and C accuracy and D dimension and tolerance deviation tolerance tolerance 114 The undesirable, but necessary and permissible deviation from a desired dimension is called…………… A actual dimension B tolerance C limit dimension D variation 115 There are ………… vector quantities in engineering A only three B many C not many D very few 116 Heat treatment is the ……………of metal to change its properties A heating B cooling C heating and D heating and colding cooling 117 Tensile forces and compressive forces have …………………effects on bodies A same B opposite C different D.some 118 An organic material is a material which is based chemically on………… A carbon B metal C iron D carbon dioxide 119 How many kinds of plastics used in engineering? A only one B C many D so many 120.What does corrosion specially attack? A plastic B steel C metal D All above 121 ……………… can be completely corrosion-resistant A Alloy B Metal C Chromium D No material 122 In which countries does each view appear in a place appropriate to its name? A The US B France C Canada D both A and C 123 The hermaphrodite caliper is used to ……………… A measure the distance between a surface B to scribe a line from a surface and a scribed line C to measure the distance between inside D both A and B and outside 124 We apply heat treatment primarily on ……………… A iron B steel C wood D gold 125 Within the elastic limit, If we double the stress on a body we will ……… the strain produced A double B triple C reduce D keep 126 What are the two most important ferrous metals? A cast iron and B iron and steel C alloy and steel D copper and steel aluminum 127 Cupronickels have resistance to ………… A fresh water B salt water C both A and B D either A or B 128 Chromium can be added into steel to ………………… A resist corrosion B increase softness C increase hardness D both A and C 129 What may make a body rotate about a point and move in a straight line at the same time? A An action B A force C A lever D A jack 130 Levers are used to ………… heavy blocks A move B carry C lift D both A and C 131 How many groups of orders can levers be divided into? A only one B two C three D four 132 Levers are classified according to relative positions of ……………… A the effort B the fulcrum C the load D All above 133 The wheelbarrow is a lever of ………… A the first class B the second class C.the third class D none 134 To gain more mechanical advantages, the distance between the point of effort and the fulcrum can be ………… A shortened B lengthened C either A or B D neither A nor B 135 What are three remaining basic machines? A the wedge, the inclined plane, the screw B the wheel, the axe, the screw C the wedge, the wheel, the axe D the inclined plane, the wheel, the axe 136 Numerical machine tools are used to machine ………… A large parts only B small parts C medium parts D both B and C 137 Using numerical machine tools, we can …………… the scrap rate during the manufacturing process A decrease B increase C slow down D create 138 How many kinds of friction? A one B two C three D four 139 What is the modern development in which there is contact between the machine parts only at rest? A bearing B non- contact C roller bearing D ball bearing bearing 140 What are machines whose input is a natural source of energy? A devices B prime movers C motions D turbines I dÞch viƯt anh 1Chóng ta cã thĨ chia đòn bẩy thành nhóm theo trật tự xắp xếp trọng tải, điểm tựa ngoại lực 2.Kim loại có độ tinh khiết cao thờng có độ ăn mòn tốt hợp kim 3.Véc tơ đại lợng có ®é lín vµ cã híng 4Mét vËt liƯu cã tÝnh đàn hồi trở lại hình dáng ban đấu sua lực sinh biến dạng không 5.Sự ăn mòn công tất vật liệu khí đặc biệt kim loại Sự chống lại chuyển động tơng đối phận chuyển động tiếp xúc với ma sát 7Bôi trơn cách để giảm ma sát Có ba loại ma sát học; ma sát tĩnh, trợt lăn Ma sát xuất tất thiết bị khí 10 Đòn bẩy ứng dụng nguyên lý momen lực điểm 11 Ma sát lực mà ngăn cản chuyển động 12 Dung sai hai chiều sai lệch dơng âm từ kích thớc 13 Hình chiếu đứng bề mặt đợc mô tả nhiều 14 Hình chiếu thay đổi theo vị trí ngời quan sát 15Một điểm mà vật thể tự xoay quanh gọi điểm tựa Đề thi khí Cơ Điện Trờng Đại Học công nghiệp Hà Nội tử Hệ : Đại Học Khoá 1, Học Kỳ : Thêi gian : 45’ - §Ị Khoa Ngoại ngữ Name: Class: I/ VOCABULARY AND GRAMMAR The intensity of stress depends on _ A c.s.a B size of the C stress D Both A and B force Most materials used in engineering are A Plastic B tough C elastic D rigid Distortion due to stress is called _ A strain B stress C stress and D tensile strain Mild steel is material A a plastic B an elastic C a tough D a corrosion resistance A body which undergoes a tensile force will A shorten B lengthen C extended D expanded _materials regain their original shape and size A rigid B elastic C tough D plastic 7.Aluminum is _metal A ferrous B non ferrous C non metal D contain iron Ceramic can withstand _ A high B heat C Both A and B D all are correct temperature Corrosion attacks A ferrous metals B non-ferrous C non metals D all materials metals 10 _is added to resist corrosion A Brass B Bronze C chromium D aluminum 11 Forces must always occurs in A couple B pairs C two D twice 12 The force of attraction exerted by huge mass of the earth is called A Nature force B gravity C stress D strain 13 Cast iron is a mixture of A steel and iron B iron and C carbon and D steel and bronze iron carbon 14 Plastic and ceramics are A metals B non-metal C non – ferrous D ferrous 15 What does corrosion attack? A Plastic B steel C chromium D All A, B, C are correct 16 Which metal can be completely corrosion-resistant? A stainless steel B chromium C plastic D None 17 How many percent are heat treatment carried out on steel? A: 40% B: 50% C:90% D: 95 % 18 What takes place when austenite transforms into ferrite and cementite? A: hardening B: quenching C: transformation 19 “Complex” means: A: A complicated B: B easy C: C.difficult 20 Which are the two most important ferrous metal? A:steel& iron B:cast iron & steel C:chromium D: two-step change D: D different D:alluminium II/ TRANSLATION Mọi vật liệu bị ăn mòn công, thép không rỉ vËy ………………………………………………………………… Dung sai cã hai lo¹i: dung sai mét chiỊu vµ dung sai hai chiỊu ………………………………………………………………… Lùc mà cản trở chuyển động đợc gọi ma sát Crôm thờng đợc thêm vào thép để chống ăn mòn Kim loại tinh khiết thờng có độ kháng ăn mòn tốt hợp kim Engineers have to know the best and most economical materials to use Engineers must also understand the properties of these materials ………………………………………………………………… ………………………………………………………………… When two different metals touch each other in the presence of moisture, corrosion occurs This type of corrosion is known as galvanic or electronic corrosion because it has an electrical cause ………………………………………………………………… ………………………………………………………………… The measurement while rotating hastens the wear of the measured surface and is dangerous at the same time ………………………………………………………………… ………………………………………………………………… Do not force the work piece in to the jaws, with a slider being fixed by a set screw ………………………………………………………………… ………………………………………………………………… 10 Friction is essential in brakes However, it is a nuisance in an engine ………………………………………………………………… ………………………………………………………………… 11.H×nh chiÕu vẽ ảnh bề mặt vật thể gần ngêi quan s¸t nhÊt 11 H×nh chiÕu biến đổi theo vị trí ngời quan sát 12 Hình chiếu cạnh hình mà ngời quan sát thu đợc nhìn vật thể từ góc trái phải so với hớng chiếu thẳng 13 Cã hai hƯ thèng qui íc; mét hệ thống hầu hết nớc châu Âu, nớc nh Mỹ, Canada Anh 14 Khi ®· biÕt đến cách xếp hình chiếu, kỹ s hình dung hình ảnh chiều mét vËt thĨ tõ b¶n vÏ cđa nã 15 Cã hai lo¹i dung sai; dung sai mét chiỊu vµ dung sai hai chiỊu 16 Dung sai cho phÐp sai sè tõ hai phÝa lµ dung sai hai chiỊu 17 Dung sai mét chiỊu chØ cã mét giíi hạn đợc hiển thị giới hạn đợc hiểu ngầm 18 Các nhà thiết kế làm việc với CAD không cần phải vÏ trªn giÊy 19 Với vẽ truyền thống, ta cần phải hình dung hình ảnh chiỊu cđa mét vËt thĨ nhng víi CAD th× ta không cần 20 Kh«ng nên đo vật gia công xoay 21 Không đợc ấn vật gia công vào hàm kẹp kéo mạnh bị m¾c 22 Sau dùng thớc đo xong, không nên rửa xà phòng Nên giũ gìn cách lau miếng giẻ 23 Việc dùng thớc đo không cẩn thận làm hỏng độ xác thớc đo, gây tính hữu ích việc đo lờng x¸c 24 Dung sai sai số không mong muốn nhng cần thiết chấp nhận đợc từ mét kÝch thíc mong muèn 25 HƯ thèng ®iỊu khiĨn sè đà đợc sử dụng hầu hết loại máy công cụ, nh máy vẽ nháp, máy đột dập, máy kiểm tra 26 Mét u điểm điều khiển số cho phép gia công chi tiết có hình dạng khó gia c«ng 27 Cã lÏ u ®iĨm điều khiển số giảm đợc đáng kể thời gian chuẩn bị gia công số lợng bớc để gia công chi tiết 28 Điều khiển số làm giảm nhiều lỗi ngời gây 29 Bất kỳ đà nắm đợc bớc vận hành máy công cụ không khó khăn viết đợc chơng trình cho máy công cụ điều khiển số thông thờng 30 Tuy nhiên, việc viết chơng trình cho máy công cụ điều khiển số phức tạp lại không đơn giản nh Complete the following sentences 31 Hundreds/ identical parts/ could/ produced/ machines 32 Only/ portion/ the wheels would/ make/one man 33 A single part/ be/ attached/ each man 34 The early railroad cars/ be / pulled / by horses 35 The rails/ the early railroad cars/ make/ steel 36 The assembly line/ introduced/ by Whitney 37 Standardization/ parts/ also/ introduced/ by him 38 More than 90% heat treating operation/ carry out/ on steel 39 To harden steel, it/ must/ cooled/ rapidly enough/ after/ be put/ into / austenitic condition 40 Steel/ heat treated/ for/ at least/ hundreds of years Task Translation 41 NhiƯt lun lµ viƯc nung nãng vµ làm nguội kim loại nhằm thay đổi tính chóng 42 Thép đà đợc nhiệt luyện cách hàng trăm năm 43 Gia c«ng nguội có nhiều u điểm vợt trội so với gia công nóng dới góc độ sản xuất hàng loạt 44 Nếu thép đà đợc nhiệt luyện trạng thái austenictic, đợc làm nguội nhanh chóng cách nhúng vào môi trờng lạnh 45 Một nhợc điểm gia công nguội đòi hỏi máy móc hạng nặng đắt tiền Do phù hợp gia công với số lợng sản phẩm lín 46 Unless the doors are closed, a lift will not operate 47 Unless mild steel is painted, it will rust 48 Unless electrical equipment is earthed, it may be electrical leaked 49 Unless proper consideration is given to these matters when a product is in the design stages, the cost of obtaining the desired surface may easily beome a consideration portion of the total cost 50 If a sound understanding of the available methods is combined with the proper design, the cost of obtaining a satisfactory finish may be greatly reduced 10 51 Unless the ignition is switched on, a car can not start 52 Unless the pilot light is on, gas central heating will not operate 53 Unless the diverter valve is switched to central heating, the radiators will not radiate 54 Unless there is current flowing in the primary coil of a transformer, there will be no current in the secondary coil 55 Unless there is a mixture of petrol and air in the cylinders, a petrol engine will not start 11 ... system C electromechanical D mechanical system system 109 Friction is sometimes a help……………it is a hindrance A but B so C therefore D and 110 Oil is used for bearing………… it is self-lubricating A... engineering, they are rotary and ………….motion A linear B straight C reciprocating D circular 103A twisting force that produces torsion or rotary motion is …………… A compressive force B tensile force... B for shape C for shaping D both A & C 37 Levers………….according to the relative positions of the load, the effort and the fulcrum A classify B is classified C are classified D classified 38 A force