I. Tr¾c nghiÖm 1 Brass is an …………………of copper and zinc. A. alloy B. avoid C. mixture D. part 2 Aluminum, copper and bronze don’t contain iron. They are …………metals A. iron B. not iron C. ferrous D. non ferrous
Trang 1Questions for revision- English for mechanical
engineering
I Tr¾c nghiÖm
1 Brass is an ……… of copper and zinc.
A alloy B avoid C mixture D part
2 Aluminum, copper and bronze don’t contain iron They are …………metals
A iron B not iron C ferrous D non ferrous
3 Metals which contain some proportion of iron may be attacked by…………
A other metals B corrode C rust D rustion
4 High-purity metal are more resistant than ………
A alloys B iron C metals D ferrous metals
5 What is the width of the bolt? It is 2cm ………
A wide B width C in wide D at width
6 A diesel engine is an engine which uses………
A oil B diesel C diesel oil D diesel petrol
7 Which view is taken to show the most important or descriptive face?
A front view B left view C top view D bottom view
8 The view obtained by looking at the object from below is called…………
A front view B left view C top view D bottom view
9 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 do 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?
14 Which is used primarily to measure the hole diameter?
A outside caliper B inside caliper C hermaphrodite
caliper D 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 design engineer B installation engineer C production engineer D technician
18 A tensile force is a force which can ……… a body.
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
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
27 The point ………… the body is free to rotate is called the fulcrum
1
Trang 2A 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
…………
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
angle
D distance at left 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
elasticity
D elasticity modulus
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
42 In order to manufacture at low cost, everything must be taken care of……….the real manufacture
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.electromechanica
l system D mechanical 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
Trang 3A 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 corrosion-
resistant B corrosion-resistance C corrode-resistant D corrode- 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
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
B characteristics
C wealth D riches
69 To ……… steel, it must be cooled rapidly after being put into the austenitic
condition.
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
72 This section will deal with the measuring tools
73 Machinists and tool makers use measuring tools in the everyday performance of their trade
A workers B engineers C workers working
with machines D workers who produce machines
74 All precision measuring tools must be handle with care in order to avoid damage to them.
A accuracy
B similarity C exactly D true
75 Which is used primarily to measure the hole diameter?
A outside caliper B inside caliper C hermaphrodite
caliper D 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
caliper B out side caliper C inside caliper D telescoping gage
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
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
3
Trang 4A 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 3 meters
86 The belt is sixty millimeters………
A in wide B in width C width D of wide
87 The electricity pylon is 25 meters………
88 What is the ……… of the oil tank?
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,
93 Numerical control machine tools are very useful……….they are used to machine parts in small and medium quantities
94 Numerical control machine tools can machine difficult shapes by means of a
A robot B automatic system C tracer controlled
unit D NC controlled 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…………
98 The bearings which contain small round balls and sometimes known as anti-friction
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 ………
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
Trang 5109 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
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
tolerance B allowance and deviation C accuracy and tolerance D dimension and 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
colding D heating and 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?
120.What does corrosion specially attack?
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
and a scribed line B to scribe a line from a surface
C to measure the distance between inside
and outside
D both A and B
124 We apply heat treatment primarily on ………
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
steel
B iron and steel C alloy and steel D copper and
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.
131 How many groups of orders can levers be divided into?
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
5
Trang 6134 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?
139 What is the modern development in which there is contact between the machine parts only at rest?
A bearing B non- contact
bearing C roller bearing D ball bearing
140 What are machines whose input is a natural source of energy?
A devices B prime movers C motions D turbines
I dịch việt anh
1Chúng ta có thể chia đòn bẩy thành nhóm theo trật tự xắp xếp giữa trọng tải, điểm tựa và ngoại lực 2.Kim loại có độ tinh khiết cao thờng có độ ăn mòn tốt hơn hợp kim
3.Véc tơ là một đại lợng có độ lớn và có hớng
4Một vật liệu có tính đàn hồi có thể trở lại hình dáng ban đấu sua khi lực sinh ra biến dạng không còn 5.Sự ăn mòn tấn công tất cả các vật liệu cơ khí đặc biệt là kim loại
6 Sự chống lại chuyển động tơng đối của các bộ phận chuyển động tiếp xúc với nhau là ma sát 7Bôi trơn là một cách để giảm ma sát
8 Có ba loại ma sát cơ học; ma sát tĩnh, trợt và lăn
9 Ma sát xuất hiện trong tất cả các thiết bị cơ khí
10 Đòn bẩy là ứng dụng của nguyên lý momen lực tại một điểm
11 Ma sát là một lực mà ngăn cản chuyển động
12 Dung sai hai chiều là sai lệch dơng và âm từ kích thớc cơ bản
13 Hình chiếu đứng là bề mặt đợc mô tả nhiều nhất
14 Hình chiếu thay đổi theo vị trí của ngời quan sát
15Một điểm mà tại đó một vật thể có thể tự do xoay quanh gọi là điểm tựa