Ôn tập tiếng Anh chuyên ngành ô tô 1.pdf.docx

**CHƯƠNG 1:** INTRODUCTION TO CAR **1. In which year was the first automobile built?**\ a. 1759\ **b. 1769**\ c. 1785\ d. 1790 **2.** **What is factor considering when buying a car ?** **Yếu tố cân nhắc khi mua xe là gì?** **a. Design \-- Thiết kế \-- n** b\. Solution c\. Friction d.All corre...

**CHƯƠNG 1:** INTRODUCTION TO CAR **1. In which year was the first automobile built?**\ a. 1759\ **b. 1769**\ c. 1785\ d. 1790 **2.** **What is factor considering when buying a car ?** **Yếu tố cân nhắc khi mua xe là gì?** **a. Design \-- Thiết kế \-- n** b\. Solution c\. Friction d.All correct. **3.** **Which factor is showed about economy of car** **(3. Yếu tố nào thể hiện về tính kinh tế của xe hơi )** a\. Functions b\. Speed c\. Status **d.** **Fuel comsumption \-- Tiêu thụ nhiên liệu \--** **4.** **What is [material used for frame of automobile] ? ( 4. Vật liệu được sử dụng cho khung ô tô là gì? )** a\. Iron b\. Iron cast **c. Steel ( thép )** d\. Alumium **5.** **What is material used for cover of catalytic converter ( 5. Vật liệu được sử dụng để che bộ chuyển đổi xúc tác là gì )** a\. Iron **b.** **Stainless steel ( b. Thép không gỉ )** c\. Steel d\. Alumium **6.** **A \_\_\_\_\_\_\_\_\_\_\_\_\_\_ is a wheel of a motor vehicle that transmits force** a\. Function **b.** **Drive wheel ** c\. Transmission d\. Gear ratio **7.** **what is the amount of money you get when you sell your car ( 7. Số tiền bạn nhận được khi bán xe là bao nhiêu )** a\. Price **b.** **Resale value ( b. Giá trị bán lại )** c\. Sale value d\. Performance **8.** **The phrase to talk about " How much petrol or diesel the car uses " ( 8. Cụm từ để nói về \" Xe sử dụng bao nhiêu xăng hoặc dầu diesel \" )** **a.** **Fuel consumption ( Mức tiêu thụ nhiên liệu )** b\. **Fuel** efficiency c\. Fuel amount d\. Fuel value **9.** **What is showing items inside the car ? 9. Những gì đang hiển thị các mặt hàng bên trong xe?** a\. Airbags b\. **Seats** c\. Exterior features **d.** **Interior features d. Đặc điểm nội thất** **10.** **Why is frame of car made from Steel ?** **10. Tại sao khung xe được làm từ thép?** **a.** **Capability to absorb impact energy Khả năng hấp thụ năng lượng tác động** b\. Price c\. Fuel comsumption d\. Speed **11.** **Which of these [is not necessary] for the [description of an automobile]?** Cái nào trong số này là không cần thiết cho mô tả của một chiếc ô tô?\ a. Type\ b. Capacity\ **c. Colour**\ d. Model **12.** **Which of these is necessary for the description of an automobile?** Cái nào trong số này là cần thiết cho việc mô tả một chiếc ô tô?\ a) Make\ b) Model\ c) Capacity\ **d)** **All of the mentioned** **13.** **Which of these cars is a Crossover SUV?** Chiếc xe nào trong số những chiếc xe này là SUV Crossover?\ **a)** **Nissan Pathfinder**\ b) Hyundai Sonata\ c) Suzuki Servo\ d) Fiat Panda **14.** **Which of these is a [compact executive car]?** Cái nào trong số này là một chiếc xe điều hành nhỏ gọn?\ a) Mercedes-Benz S Class\ b) Audi A8\ **c)** **Audi A4**\ d) Mercedes-Benz E Class **16.** **The torque available at the contact between road and driving wheel is called \_\_\_\_\_\_\_\_\_** Mô-men xoắn có sẵn tại tiếp điểm giữa đường và bánh xe lái xe được gọi là\ a) Brake power\ b) Friction power\ **c)** **Tractive effort \-- Nỗ lực kéo\--**\ d) Engine torque **17.** **The force that opposes the motion of a vehicle is \_\_\_\_\_\_\_** Lực chống lại chuyển động của một chiếc xe là \_\_\_\_\_\_\_\ a) Rolling resistance\ b) Gradient resistance\ c) Wind or air resistance\ **d)** **All of the mentioned** **18.** **Wind or air resistance depends on which of the following factors?** Sức cản của gió hoặc không khí phụ thuộc vào yếu tố nào sau đây?\ a) Shape and size of vehicle body\ b) Air velocity\ c) Speed of vehicle\ **d)** **All of the mentioned** **19.** **Gradient resistance for a vehicle depends on which of the following factors**? Khả năng chống chuyển màu cho xe phụ thuộc vào yếu tố nào sau đây?\ **a)** **Weight of the vehicle \--** **Trọng lượng của xe\--**\ b) Size of the vehicle\ c) Width of tyres\ d) Speed of the vehicle **20.** **[Two door] and [four door type automobiles] are classified as \_\_\_\_\_\_\_\\** Xe ô tô hai cửa và bốn cửa được phân loại là \_\_\_\_\_\_\_\ **a)** **Sedan**\ b) Convertible\ c) Special purpose vehicles\ d) Pick ups **21.** **Which of these falls under [LMV(Light Motor Vehicle)] category based on capacity?** Cái nào trong số này thuộc danh mục LMV (Xe cơ giới hạng nhẹ) dựa trên công suất?\ a) Motorbikes\ **b) Cars**\ c) Buses\ d) Trains **22.** **Most of the \_\_\_\_\_\_\_\_\_\_\_\_\_\_ vehicles have automatic transmission.** Hầu hết các xe \_\_\_\_\_\_\_\_\_\_\_\_\_\_ đều có hộp số tự động.\ a) Indian\ b) Japanese\ **c) American**\ d) British **23. A 4\*2 drive vehicle implies that** Một chiếc xe 4 \* 2 lái ngụ ý rằng\ a) It has 4\*2=8 wheels\ b) It has 2 auxiliary wheels and 4 drive wheels\ **c) It has 4 wheels out of which 2 are drive wheels \--** **Nó có 4 bánh trong đó có 2 bánh dẫn động\--**\ d) None of the mentioned **24. [A delivery van] falls under the category of which type of vehicles.** Một chiếc xe tải giao hàng thuộc loại phương tiện nào.\ a) Heavy passenger vehicles\ b) Light passenger vehicles\ c) Heavy goods vehicles\ **d) Light goods vehicles \--** **Xe chở hàng nhẹ\--** **25. Abbreviation [HEVs] stands for what**\ a) Highly Efficient Vehicles\ **b) Hybrid Electric Vehicles**\ c) Highly Economic Vehicles\ d) Highly Engineered Vehicles **26.** **In Automobile, what does [SUV] stand for ?**\ **a)** **Sport Utility Vehicle**\ b) Sub-urban Utility Vehicles\ c) Short Urban Vehicles\ d) Super Utility Vehicles **27.** **Trucks and Buses use which type of fuel ?** Xe tải và xe buýt sử dụng loại nhiên liệu nào?\ a) Petrol\ b) LPG\ c) CNG\ **d)** **Diesel** **28.** **[A conventional suspension system] uses which of these?** Một hệ thống treo thông thường sử dụng cái nào trong số này? **a)** **Leaf Springs \--** **Lò xo lá\--**\ b) Coil Springs\ c) Torsion bars\ d) None of the mentioned **29.** **A heat engine converts heat energy from fuel combustion or any other source into which type** **of work ?** Một động cơ nhiệt chuyển đổi năng lượng nhiệt từ quá trình đốt cháy nhiên liệu hoặc bất kỳ nguồn nào khác thành loại công việc nào?\ a) Electrical work\ **b)** **Mechanical work \--** **Công việc cơ khí\--**\ c) Pressure work\ d) None of the mentioned **30.** **Which of these is a [power absorbing heat engine] ?** Cái nào trong số này là động cơ hấp thụ nhiệt?\ a) Steam engine\ b) Petrol engine\ **c)** **Air compressor \--** **Máy nén khí\--**\ d) None of the mentioned **31** **The firing order in case of four cylinder inline engines is usually \_\_\_\_\_\_\_\_?**\ a) 1-2-4-3\ b) 1-3-4-2\ c) 1-4-3-2\ **d)** **Either 1-3-4-2 or 1-4-3-2** **32.** **In case of four cylinder opposed cylinder engines the firing order is \_\_\_\_\_\_\_\_\_\_\_ ?**\ **a)** **1-4-3-2**\ b) 1-3-4-2\ c) 1-2-3-4\ d) 1-2-4-3 **33.** **In case of four cylinder inline engine the number of firing strokes in one revolution of crank is \_\_\_\_\_\_\_ ?** Trong trường hợp động cơ bốn xi-lanh thẳng hàng, số hành trình bắn trong một vòng quay của tay quay là \_\_\_\_\_\_\_?\ a) 1\ **b) 2**\ c) 3\ d) 4 **34.** **In four cylinder engines the ignition advance depends on \_\_\_\_\_\_\_\_\_ ?** Trong bốn động cơ xi-lanh, việc đánh lửa phụ thuộc vào \_\_\_\_\_\_\_\_\_?\ a) Quality of fuel\ b) Engine speed\ c) Cylinder dimensions\ **d)** **Quality of fuel and engine speed \--** **Chất lượng nhiên liệu và tốc độ động cơ\--** **35[. ][Ignition advance] is expressed in terms of \_\_\_\_\_\_\_\_\_ ?** Tiến bộ đánh lửa được thể hiện dưới dạng \_\_\_\_\_\_\_\_\_ ?\ a) Crank angle\ b) Millimetres of piston travel before TDC\ c) Time in milli seconds\ **d)** **All of the mentioned** **36.** **Sir Rudolf Diesel invented diesel engine in which year ?**\ a) 1905\ b) 1916\ c) 1920\ **d) 1913** **37.** **In internal combustion engine the approximate percentage of the combustion heat that passes to the cylinder walls is \_\_\_\_\_\_\_\_\_ ?** Trong động cơ đốt trong, tỷ lệ phần trăm gần đúng của nhiệt đốt cháy truyền đến thành xi lanh là \_\_\_\_\_\_\_\_\_?\ a) 5%\ b) 10%\ **c)** **30%**\ d) 60% **38.** **In a four stroke S.I engine the exhaust valve usually opens \_\_\_\_\_\_ ?** Trong động cơ S.I bốn thì, van xả thường mở \_\_\_\_\_\_?\ a) At BDC\ **b)** **35 degree to 60 degree before BDC \--35 độ đến 60 độ trước BDC\--**\ c) 35 degree to 60 degree after BDC\ d) 10 degree to 20 degree before BDC **39.** **In a diesel engine the pressure during combustion may increase to a range at \_\_\_\_\_\_\_\_\_ ?** Trong động cơ diesel, áp suất trong quá trình đốt cháy có thể tăng lên một phạm vi ở \_\_\_\_\_\_\_\_\_\ a) 10-15 atm\ b) 15-20 atm\ c) 20-30 atm\ **d)** **55-75 atm** **40.** **The pressure in an engine cylinder is less than atmospheric pressure when the engine is performing which stroke ?** Áp suất trong xi lanh động cơ nhỏ hơn áp suất khí quyển khi động cơ đang thực hiện hành trình nào?\ **a)** **Suction \-- Hút \--**\ b) Compression\ c) Power\ d) Exhaust **CHƯƠNG 2: MATERIAL USING IN ENGINEERING** **1. Kinds of [mechanical properties]** **a. Strength** b\. Corrosion c\. Formed d.All correct **2. Kinds of [physical properties]** **a. Density** b\. Oxidation c\. Casting d\. All correct. **3. Kinds of [chemical properties]** a\. Corrosion b\. Oxidation c\. Density **d. a&b** **4. Kinds of [manufacturing properties ?]** a\. Machined b\. Formed c\. Casting **d. All correct.** **5. Types of engineering materials** a\. 2 **b. 3** c\. 4 d\. 5 **6. Find suitable words with phrase " [Formed by mixing other metals or elements] "** **a. An alloy** b\. An metal c\. An insulator d\. A conductor **7. Find suitable words with phrase " Allows heat or current to flow easily "** **a. A conductor** b\. An metal c\. An insulator d\. An alloy **8. Find suitable words with phrase " Does not allow heat or current to flow easily"** a\. A conductor b\. An metal c\. An alloy **d. An insulator** **9. [The bulk of hydrocarbon] belongs to which group?**\ **a) paraffin**\ b) isoparaffin\ c) cycloparaffin\ d) aromatic **10.** **Which of these [is not a lighter fraction of fuel oil] ?**\ a) gasoline\ b) aviation fuel\ c) heavy diesel oil\ **d)** **boiler fuel** **11.** **Which of [the following type of fuel does not] contain ash ?**\ a) coal\ b) fuel oil\ **c)** **natural gas**\ d) synthetic fuels **12.** **Which of these gases is the reason for the maintenance of natural gas at cryogenic temperatures ?** **a) methane**\ b) ethane\ c) propane\ d) benzene **13.** **The gas which contributes [maximum to heating value of natural gas] is ?**\ a) CO\ b) CO~2~\ c) H~2~\ **d)** **CH~4~** **14.** **A coal containing high [percentage of durian] is called \_\_\_\_\_\_\_\_\_ ?**\ **a)** **splint**\ b) bright\ c) boghead\ d) non-banded **15.** **Which types of wheels [cannot be used with a tubeless tire ?]**[\ ]a) Disc wheel\ b) Light alloy wheel\ **c)** **Wire wheel**\ d) Composite wheel **16. Which type of wheels is [preferred in sports cars] ?**\ a) Disc wheel\ b) Wire wheel\ **c) Magnesium alloy wheel**\ d) Aluminum alloy wheel **17. In case of a wire wheel, [the vehicle weight is supported] by the wire in \_\_\_\_\_\_\_\_\_** **a) Tension**\ b) Bending\ c) Shear\ d) Compression **18. [Where will an underinflated tire] wear the thread most?**\ a) Near center\ **b) Near the edgex**\ c) In the cross direction\ d) In the lateral direction **19. [Where will an overinflated tire] wear the thread most?**\ **a) Near center**\ b) Near the edge\ c) In the cross direction\ d) In the lateral direction **20. What do the permissible of mixing cross-ply and radial-ply automobile tires allow?**\ a) Cross-ply tires on left wheels\ b) Cross-ply tires on right wheels\ **c) Cross-ply tires on front wheels**\ d) Cross-ply tires on rear wheels **21. What is the [purpose of tire rotation] on automobiles?**\ a) Avoid ply separation\ **b) Equalize wear**\ c) Get better ride\ d) Reduce bump **22. Which are [the two materials] used in a bimetallic piston?**\ a) Copper and steel\ b) Magnesium and aluminum\ c) Steel and cast iron\ **d) Aluminum and steel** **23. By adding which of the following material to aluminum alloy piston slap can be avoided?**\ **a) Silicon**\ b) Zinc\ c) Copper\ d) Lead **24. Which among [the following casting process] is used in the casting of the piston?**\ a) Investment casting\ b) Low-pressure casting\ c) Sand casting\ **d) Gravity die casting** **25. In a disc brake, which [component provides] the pad-to-disc adjustment?**\ a) Bleed screw\ b) Piston\ c) Caliper\ **d) Piston seal** **26. On what principle does [the braking system] in the car work?**\ **a) Frictional force**\ b) Gravitational force\ c) Magnetic force\ d) Electric force **27. Which of the following is not a method to avoid piston slap?**\ a) Taper piston\ b) Piston with T-slots\ c) Offset piston\ **d) Increase the size of the piston skirt** **28. Which is [the material used to wound] on a wire wound piston?**\ **a) Steel**\ b) Lead\ c) Zinc\ d) Magnesium **29. Which among the following type is named when [the silicon content is 12%] in an aluminum alloy?**\ **a) Eutectic**\ b) Hyper-eutectic\ c) Hypo-eutectic\ d) Pearlite **30. Which of the following is [the main reason for a burnt piston?]\ **a) Hot air intake\ b) Leak of coolant\ c) More clearance\ **d) Detonation** **31. Which material is coated on [the piston to increase the service life]?**\ **a) Tin**\ b) Zinc\ c) Lead\ d) Cadmium **32. Which of the following material is used in [the manufacturing of the connecting rod?]**[\ ]a) Magnesium\ b) Copper\ c) Bronze\ **d) Steel** **33. What is the percentage of carbon present in a medium carbon steel type connecting rod?**\ a) 0-0.1\ b) 0.1-0.2\ c) 0.25-0.35\ **d) 0.35-0.45** **34. In splash lubrication, [the spout is attached] to [with part of the connecting rod]?**\ a) Piston\ b) Shank\ **c) Big end**\ d) Small end **35. Which among the following material is plated on the cylinder liner to improve the resistance to corrosion and wear?**\ a) Cast iron\ **b) Chromium**\ c) Zinc\ d) Lead **36. Which type of casting process is used to cast cylinder liners?**\ **a) Centrifugal casting**\ b) Investment casting\ c) Die casting\ d) Sand casting **37. Which among the following material is most commonly used in the manufacturing of cylinder liner?**\ a) Titanium\ b) Copper\ c) Brass\ **d) Grey cast iron** **38. What is the percentage of carbon present in a cast steel type crankshaft?**\ a) 0-1\ b) 2-4\ **c) 1.35-1.6**\ d) 4-6 **39. Exhaust manifolds are [usually made of what material]?**\ a) Copper\ b) Chromoly\ c) Mild steel\ **d) Cast iron** **40. Which of the following material is the most commonly used in the construction of crankshaft?**\ **a) Cast steel**\ b) Bronze\ c) Copper\ d) lead **41. [Camshaft gear is made] from which material?**\ a) Cast iron\ b) Mild steel\ **c) Bakelite**\ d) Brass **42. Cylinder liner materials are made of alloy iron containing \_\_\_\_\_\_\_\_\_\_\_\_**\ a) Manganese\ b) Nickel\ c) Chromium\ **d) All of the mentioned** **43. [Aluminium cylinder] blocks require \_\_\_\_\_\_\_\_\_\_** **a) Cast iron Liners**\ b) Brass Liners\ c) Aluminium Liners\ d) No Liners **44. Which of the following is [the most important property of the lubricant]?**\ a) Density\ b) Thermal conductivity\ **c) Viscosity**\ d) Melting point **45. Which of the following viscosity indices shows the larger changes in viscosity with temperature?**\ a) 50\ b) 100\ c) 45\ **d) 10** **46. Which of the following of oils is multi-grade oil?**\ **a) SAE 10W 30**\ b) SAE 25W\ c) SAE 10\ d) SAE 20W **47. Which of the following [oils has the highest viscosity]?**\ a) SAE 20\ b) SAE 10\ **c) SAE 50**\ d) SAE 45 **48. Which of the following [is not a part of the transmission system]?**\ a) Clutch\ b) Axles\ **c) Wheels**\ d) Gear box **49. The electrical system of an automobile contains which of the following?**\ a) Battery\ b) Alternators\ c) Lighting systems\ **d) All of the mentioned** **50. [The electrical system of an automobile] contains which of the following?**\ a) Battery\ b) Alternators\ **c) Lighting systems**\ d) All of the mentioned **CHƯƠNG 3: ENGINE AND ITS COMPONENTS** **1. An engine is [a machine designed to convert] one form of \_\_\_\_\_\_\_\_ into mechanical energy?** a\. Chemical energy b\. Power **c. Energy** d\. Mechanism **2. [Heat engines] burn a \_\_\_\_\_\_\_\_ to create heat which is then used to do work.** a\. Liquid b\. Material **c. Fuel** d\. Coal **3. [Combustion process of the air-fuel] mixture is \_\_\_\_\_\_\_\_ by a spark from a spark plug.** **a. Ignited** b\. Ignitted c\. Ignition d\. Ignite **4. Piston is a cylindrical unit, used to compress the charge during \_\_\_\_\_\_\_\_\_\_\_\_** **a. Compression stroke** b\. Compression cycle c\. Intake stroke d\. Stroke **5. The pistons of IC engines are usually made of \_\_\_\_\_\_\_\_\_\_\_\_\_\_** a\. Iron cast **b. Aluminium alloy** c\. Stainless steel d\. Aluminium **6. The \_\_\_\_\_\_\_\_\_\_\_ is called the backbone of an engine** **a. Crankshaft** b\. Camshaft c\. Driveshaft d\. Valves **7. The major function of the camshaft is to operate the \_\_\_\_\_\_\_\_\_\_\_ valves** a\. Inlet and exhaust b\. Intake and exhaust c\. Exhaust **d. a&b** **8. [The camshaft] is \_\_\_\_\_\_\_\_\_\_ by crankshaft at half the speed of the crankshaft** **a. Driven** b\. Drive c\. Driving d\. Steering **9. Fuel and air is compressed in the \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_chamber** **a. Combustion** b\. Heat c\. Air d\. Fuel **10.** **The function of crankcase in two stroke petrol engines is \_\_\_\_\_\_\_\_\_** a\. It lower downs the temperature **b. It forms a pressurised chamber for fuel air mixture** c\. It holds the exhaust gases after combustion d\. None of the mentioned **11. Connecting rod is attached to the piston by the \_\_\_\_\_\_\_\_\_\_\_** a\. Rod cap **b. Piston pin** c\. Cap bolt d\. Lower cap **12. Engine pistons are [generally made of aluminium alloy] because \_\_\_\_\_\_** **a. It is lighter** b\. It is stronger c\. It has less wear d\. It absorbs shock **13. P[iston compression rings] are made of \_\_\_\_\_\_\_\_\_\_\_\_\_** **a. Cast iron** b\. Steel c\. Aluminium d\. Bronze **14. What type of material is used for Gudgeon pin?** a\. Cast iron b\. Aluminium **c. Steel alloy of high strength** d\. Hardened and ground steel **15. [When no.1 piston of a four cylinder in line four stroke engine] is performing the power stroke, no.4 piston is on the stroke called \_\_\_\_\_\_\_** **a. Suction** b\. Compression c\. Power d\. Exhaust **16. [Two stroke engine] is preferred for small vehicle because** a\. Fuel consumption is low b\. Shock and vibrations are less **c. Its size is small** d\. It is easy to control **17. [The size of intake valve] is** a\. Smaller than that of the exhaust valve b\. Equal to that of the exhaust valve **c. Larger than that of the exhaust valve** d\. Not depending upon the size of exhaust valve **18. A negative loop [in the P.V diagram of ann IC engine] is due to** a\. Pre ignition in the engine **b. Suction of air for engine** c\. Pre opening of the exhaust valve d\. High pressure in the cylinder **19. [Piston displacement] is calculated from the** a\. Cylinder diameter and length b\. Piston length and diameter **c. Bore and stroke** **20. [The range of gear ratios] in a vehicle depends on** a\. The ratio of engine H.P to laden weight of vehicle **b. Max.engine torque/wt. of vehicle** c\. Only on the laden weight of vehicle d\. The power to weight ratio of engine **21. If compression ratio is increased** a\. Thermal efficiency will be increased b\. Volumetric efficiency will be increased c\. Air standard efficiency will be decreased **d. Air standard efficiency will be increased** **22. The combustion process in a diesel engine is** **a. Constant pressure process** b\. Isothermal process c\. Contant volume process d\. Adiabatic process **23. [The temperature of the compressed air] should be \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_of the fuel** a\. Below the flash point b\. Above the flash point **c. Above the flash point** d\. Between the fire and flash point **24. [The purpose of crankcase] ventilation is to \_\_\_\_\_\_\_\_\_\_**\ a. Cool the oil\ **b. Remove vaporised water and fuel**\ c. Supply oxygen to the crankcase\ d. It assists in maintaining the viscosity of oil **25. The purpose of a piston pin is that \_\_\_\_\_\_\_\_\_**\ a. It prevents the valve from rotating\ b. It links the connecting rod to the crankshaft\ c. It ensure the piston ring to the piston\ **d. It connect the piston to the connecting rod** **26[.The engine produces mechanical power] that is transmitted to the automobile's wheels through a \_\_\_\_\_\_\_\_\_\_** a\. suspension system b\. wheel system. **c. drivetrain system.** d\. all correct. **27. \_\_\_\_\_\_\_\_\_systems provide control over direction and speed.** a\. Drivetrain **b. Steering and braking** c\. Wheel system. d\. Suspension system. **28. The piston \_\_\_\_\_ [in the cylinder bore to evacuate] the combustion chamber.** **a. Moves downward** b\. Descends c\. Passes from a higher to a lower place. d\. All correct. **29. A petrol engine, whether [four- or two-stroke], is called a \_\_\_\_\_** a\. Electriacal Ignition engine b\. Compressed Ignition engine **c. Spark Ignition engine** d\. All correct **30. There are two methods by which fuel is injected into a combustion chamber, they are \_\_\_\_\_.** a\. Blowing & intaking b\. Compressing & exhausting **c. Direct or indirect injection.** d\. All correct. **31. [Spark plug] are mounted inside \_\_\_\_\_\_\_\_\ a. cylinder block**\ b. cylinder head\ c. **crank case**\ d. piston **32. Which of the following provides passages for flow of cooling water?**\ a. Cylinder block\ **b. Cylinder head**\ c. Crank case\ d. Piston **33. For retaining compression in the cylinder, a flat piece of \_\_\_\_\_\_\_\_\_\_\_ is placed [between the cylinder head and cylinder block.]**\ **a. Gasket**\ b. Rims\ c. Cylinder liner\ d. Invar strut **34. The main advantage of using aluminium alloy for cylinder head is \_\_\_\_\_\_\_\_\_\_\_\_** a\. Lightness in weight\ **b. High thermal conductivity**\ c. Less corrosion rate\ d. Cost **35. Inter-metallic corrosion between steel studs and aluminium alloy lead to \_\_\_\_\_\_\_\_\_\_\_**\ a. Engine war-up\ b. Higher fuel consumption\ **c. Cylinder head stick to cylinder block**\ d. Gaskets get damaged **36. Why [cylinder head cast as a separate piece]?**\ a. Good compression ratio\ b. High efficiency\ c. Prevent collision\ **d. Easy removal** **37. \_\_\_\_\_\_\_\_\_\_\_\_ is [combination of fibre and cork granules] that is more compressible and resilient.**\ a. Karropak\ **b. Felicoid**\ c. Shimbestos\ d. Metal sandwich **38. Which of the following [oil pan gaskets are not] [affected] by oil and grease?**\ a. Felbestos\ b. Metal encased\ **c. Felcoperne**\ d. Felicod **39. Which of the following [is not the type of manifold gaskets]?**\ a. felbestos\ b. metal encased\ c. metal embosed\ **d. shimbestos** **40. \_\_\_\_\_\_\_\_\_\_\_\_ is [attached to the bottom face] of cylinder block.**\ **a. crank case**\ b. oil pan\ c. piston\ d. cylinder liners **41. [The cylinder block and upper half of the crank] case are cast by \_\_\_\_\_\_\_\_\_ material.**\ a. Aluminium\ b. Zinc\ **c. Semi-steel**\ d. Titanium **42. \_\_\_\_\_\_\_\_\_ serves as [a cooling and ventilation of engine lubricating oil.]**\ a. crank case\ **b. oil sump**\ c. cam shaft\ d. piston **43. [A heat engine converts heat] energy from fuel combustion or any other source into which type of work?**\ a. Electrical work\ **b. Mechanical work**\ c. Pressure work\ d. None of the mentioned **44. A steam engine comes under the category of \_\_\_\_\_\_\_\_**\ **a. External combustion engines**\ b. Internal combustion engines\ c. All of the mentioned\ d. None of the mentioned **45. Which of these is [a power absorbing heat engine?]**[\ ]a. Steam engine\ b. Petrol engine\ **c. Air compressor**\ d. None of the mentioned **46. Which of these is a type of reciprocating steam engine?**\ a. Simple\ b. Compound\ c. Uniflow\ **d. All of the mentioned** **47. A gas undergoes step 4 in Carnot cycle. Which of these processes describes the 2nd step?**\ a. Isentropic expansion\ **b. Isentropic compression**\ c. Isothermal expansion\ d. Isothermal compression **48. Thermal power plants operate on which of these cycles?**\ a. Otto cycle\ **b. Rankine cycle**\ c. Carnot cycle\ d. Stirling cycle **49. The efficiency of a combined cycle gas turbine(steam cooled) can range as high as \_\_\_\_\_\_\_\_**\ a. 20%\ b. 30%\ c. 40%\ **d. 60%** **50. The torque available at the contact between road and driving wheel is called \_\_\_\_\_\_\_\_\_**\ a. Brake power\ b. Friction power\ **c. Tractive effort**\ d. Engine torque **CHƯƠNG 4: AUTOMOBILE SYSTEMS OVERVIEW** **1. The engine produces mechanical power that is transmitted to the automobile's wheels through a drivetrain.** a.transmission & driveshaft(s). b.differential & axles. **c.All correct.** d.All incorrect. **2. The engine produces mechanical power that is transmitted to the automobile's wheels through a drivetrain.** a.transmission & driveshaft(s). b.differential & axles. c.All correct. d.All incorrect. **3. SUVs is a \_\_\_\_\_\_\_\_\_\_** a\. Same-utility vehicles b\. Sport-universal vehicles **c.Sport-utility vehicles** d\. Sport-utility vendor. **4. Power is produced during** a\. intake stroke b\. compression stroke **c. combustion stroke** d\. exhaust stroke **5. An SI engine is:** **a. a type of internal combustion engine** b\. a Stirling engine c\. always fuel injected d\. none of the above **6. The two-stroke engine does not use \_\_\_\_\_** a\. spark plug **b.inlet and exhaust valves** c\. crankshaft d\. piston **7. The transmission is [a gear system that adjusts the ratio of engine speed] to wheel speed.** a\. rocker b\. piston rod **c. gearbox** d\. pin **8. The drive shaft is used to \_\_\_\_\_ [the transmission output shaft to the differential input shaft.]** a.couple **b.connect** c.link d.all correct **9[. The gear ratio] also \_\_\_\_\_ fuel economy.** a.effects **b.affects** c.influence d.all correct **10. Engine, clutch, transmission, drive shaft, differential and driven wheels are elements of drivetrain system** a\. True **b. False** **11. The intake stroke draws air and fuel into the combustion chamber** a\. induction stroke. b\. income stroke. c\. introduction stroke d\. all correct. **12. Which of these [is not a power loss] which takes place between engine and driving wheel?**\ a. Power loss due to friction of piston bearings and gears\ b. Power loss from clutch to drive wheel due to friction of various parts\ c. Transmission line loss\ **d. None of the mentioned** **13. The force that opposes the motion of a vehicle is \_\_\_\_\_\_\_**\ a.Rolling resistance\ b. Gradient resistance\ c. Wind or air resistance\ **d. All of the mentioned** 14\. Rolling resistance doesnot depend on which of the following factors?\ a) Load on each road wheel\ **b) Radius of driving wheel**\ c) Wheel inflation pressure\ d) Nature of road surface **15. For an average type of road surface what percentage of vehicle's weight constitutes rolling resistance?**\ a) 5 to 10%\ **b) 1 to 2%**\ c) 2 to 5%\ d) 0 to 3% **16. Wind or air resistance depends on which of the following factors?**\ a) Shape and size of vehicle body\ b) Air velocity\ c) Speed of vehicle\ **d) All of the mentioned** **17. The value of coefficient of air resistance for average cars is approximately equal to \_\_\_\_\_\_\_\_\_\_**\ a) 0.32\ b) 0.032\ **c) 0.0032**\ d) 1.32 **18. One Horse Power(H.P) is approximately equal to \_\_\_\_\_ Watts.**\ a) 810\ b) 545\ c) 634\ **d) 746** **19. Gradient resistance for a vehicle depends on which of the following factors?**\ **a) Weight of the vehicle**\ b) Size of the vehicle\ c) Width of tyres\ d) Speed of the vehicle **20. Power to weight ratio for high performance cars can range up to \_\_\_\_\_\_\_**\ a) 150\ b) 190\ **c) 230**\ d) 280 **21. Which of the following [is not a major part of the crankshaft]?**\ a) Main journal\ b) Crank pins\ **c) Water pump**\ d) Crank webs **22. How many [types of crankshaft] construction are used universally?**\ a) 1\ **b) 2**\ c) 4\ d) 6 **23. What does [inlet manifold carry] to the engine?**\ a) Air\ b) Fuel\ c) Oxygen+ fuel\ **d) Air+ fuel** **24. Manifolds are connected to which part of the engine?**\ a) Cylinder\ **b) Cylinder head**\ c) Gasket\ d) Engine block **25. In the petrol engine, the inlet manifold carries the air-fuel mixture from which [part to the cylinder?]**\ a) Air filter\ b) Fuel injector\ c) Fuel pump\ **d) Carburetor** **26. The manifold must be larger enough to allow sufficient flow for what?**\ **a) Max power**\ b) Max emission\ c) Min emission\ d) Lower torque **27. Exhaust manifold is connected to which part of the engine?**\ **a) Cylinder head**\ b) Engine block\ c) Gasket\ d) Muffler **28. [The exhaust manifold] is designed to withstand what?**\ a) Temperature\ b) Gas\ **c) Heat**\ d) Contraction **29. The surface of the exhaust manifold is made smooth to minimize the restriction of what?**\ **a) Exhaust gas**\ b) Temperature\ c) Heat\ d) Contraction **30. Which of the following helps in [the uniform speed] of crankshaft despite uneven power impulses of the engine cylinder?**\ a) Piston\ b) Connecting rod\ c) Gasket\ **d) Flywheel** **31. How much percentage of the cylinder bore size concerningthe thickness of the crank web?**\ a) 80\ b) 60\ **c) 20**\ d) 40 **32. In a four stroke cycle engine camshaft revolves at \_\_\_\_\_\_ the crank speed.**\ a) Two times\ **b) Half**\ c) Four times\ d) Three times **33. The gears on camshaft and crankshaft [are known as] \_\_\_\_\_\_\_\_**\ a) Lining gears\ b) Aligning gears\ **c) Timing gears**\ d) Tuning gears **34. The material known as *[high carbon high copper]* chrome silicon cast steel is used for making** \_\_\_\_\_\_\_\_\_\ **a) Camshaft**\ b) Cylinder body\ c) Cylinder head\ d) Piston **35. Crankshafts are usually constructed by \_\_\_\_\_\_**\ a) Casting\ **b) Drop forging**\ c) Drawing\ d) Extrusion **36. Crankshafts are usually constructed by \_\_\_\_\_\_**\ a) Casting\ **b) Drop forging**\ c) Drawing\ d) Extrusion **37. The crankshaft rotates the camshaft using \_\_\_\_\_\_\_**\ a) Belt drive\ **b) Chain drive**\ c) Gear drive\ d) Motor drive **38. The crankshaft should be inspected for \_\_\_\_\_\_**\ a) Cracks\ b) Alignment of crankpins and journals\ c) Cleanliness of oil gallaries\ **d) All of the mentioned** **39. If there are 7 clutch plates in a multi-plate clutch, what is the number of pair of contact surfaces?**\ a) 5\ b) 4\ **c) 6**\ d) 8 **40. Which of the following [contains no linkage] between the clutch and the pedal?**\ **a) Clutch -- by -- wire**\ b) Wet clutch\ c) Hydraulic single plate clutch\ d) Hydraulic multi-plate clutch **41. Where is [the clutch located?]**[\ ]**a) Between transmission and engine**\ b) Between transmission and rear axle\ c) Between transmission and propeller shaft\ d) Between transmission and differential **42. Which of the following parts of [the cover assembly] that hold the pressure plate against the clutch plate?**\ **a) Springs**\ b) Thrust bearings\ c) Struts\ d) Lever **43. Which of the following is the coefficient of friction of the clutch plate?**\ a) 1.3\ b) 0.8\ **c) 0.4**\ d) 0.1 **44. What does [the venturi in carburetor] cause?**\ **a) Increase of air velocity**\ b) A decrease in air velocity\ c) A decrease in fuel flow\ d) Decrease of manifold vacuum **45. Where does [the power for mechanical fuel pump] come from?**\ **a) Camshaft**\ b) Crankshaft\ c) Distributor shaft\ d) Propeller shaft **46. How can [a two-stroke engine identify] by?**\ a) Piston size\ **b) Absence of valves**\ c) Cooling system\ d) Lubrication system **47. At which stroke the fuel is injected in the CI engine?**\ a) Suction stroke\ **b) Compression stroke**\ c) Expansion stroke\ d) Exhaust stroke **48. The stroke of an engine is the \_\_\_\_\_\_\_\_\_**\ a) Volume of the cylinder\ b) Length of the connecting rod\ c) Internal diameter of the cylinder\ **d) Distance between TDC and BDC** **[49. In a four stroke engine each cylinder has]**\ a) One valve\ **b) Two valves**\ c) Three valves\ d) Four valves **50. The valve is opened as the cam lobe on the cam raises the**\ a) Bearing\ b) Piston\ **c) Valve lifter**\ d) Valve seat **CHƯƠNG 5: TRANSMISSION SYSTEMS & ELECTRICAL SYSTEM OF AUTOMOBILE** **1. Which of the following is [the need of the gearbox]?**\ a) To vary the speed of the vehicle\ **b) To vary the torque of the vehicle**\ c) To vary the power of the vehicle\ d) To vary the acceleration of the vehicle **2. In which type of manual transmission the double-declutching is used?**\ **a) Constant-mesh gearbox**\ b) Sliding mesh gearbox\ c) Synchromesh gearbox\ d) Epicyclical gearbox **3. Where is the overdrive located?**\ a) Between transmission and engine\ b) Between transmission and rear axle\ **c) Between transmission and propeller shaft**\ d) Between transmission and differential **4. Which of the following is not part of automatic transmission?**\ a) Epicyclic gearbox\ b) Torque convertor\ c) Multi-plate clutch\ **d) Sliding mesh gearbox** **5. Why are the helical gears used commonly in transmission over spur gears?** a\) Low cost and high strength\ **b) Low noise level and high strength**\ c) Low noise level and economy\ d) Low noise level and low cost **6. Increase of torque in a vehicle is obtained by decreasing power.**\ a) True\ **b) False** **7. Which types of joints are used when [the shafts are inclined]?**\ **a) Universal joint**\ b) Hinge joint\ c) Ball and socket joint\ d) Pivot joint **8. Which of the following is the disadvantage of the open differential?**\ a) High in cost\ b) Not reliable\ c) Complex design\ d) Sends most of the power to the wheel having less traction **9. Why do the hypoid gears require special lubricant?**\ a) Teeth are soft\ b) Teeth are hard\ c) Gears run faster\ **d) There is relative motion between teeth** **10. What is the need of the universal joint?**\ a) To change inclination\ b) To bend sideways\ **c) To transfer torque at an angle**\ d) To change length **11. A two-piece propeller shaft requires one universal joint.**\ a) True\ **b) False** **12. Which of the following [is not considered while deciding] the optimum firing order of the engine?**\ a) Engine vibration\ b) Engine cooling\ c) Development of the backpressure\ **d) Engine configuration** **13. Why is the Dwell meter used?**\ a) To set the spark plug gap\ b) To set the ignition advance\ **c) To set the contact breaker gap**\ d) To set ignition timing **14. On which condition does the vacuum advance mechanism shift the ignition point?**\ **a) Under part-load operation**\ b) Under full load operation\ c) Under no-load operation\ d) Under sudden acceleration **15. [The conventional direction] of electric field is \_\_\_\_\_\_\_\_**\ **a) Positive to negative**\ b) Negative to positive\ c) No specific direction\ d) Direction cannot be determined **16. [Electric field originates] at \_\_\_\_\_\_\_\_\_\_**\ **a) Positive charge**\ b) Negative charge\ c) Neither positive nor negative\ d) Both positive and negative **17. [Electric field terminates] at \_\_\_\_\_\_\_\_**\ a) Positive charge\ **b) Negative charge**\ c) Neither positive nor negative\ d) Both positive and negative **18. Which among the following [statements is true] with regard to electric field lines?**\ a) Electric field lines always intersect\ b) Electric field lines may or may not intersect\ c) Electric field lines can be seen\ **d) Electric field lines never intersect** **19. A field that spreads outwards in all directions is \_\_\_\_\_\_\_\_\_\_**\ a) Linear\ **b) Radial**\ c) Weak\ d) Strong **20. The [insulant between] the two plates of a capacitor is called \_\_\_\_\_\_\_**\ a) Conductor\ b) Semi-conductor\ **c) Dielectric**\ d) Superconductor **21. Which of the following depends on charging and discharging rate of a capacitor?**\ **a) Time constant**\ b) Current\ c) Power\ d) Voltage **22. What is [the initial current] while charging a capacitor?**\ **a) High**\ b) Low\ c) 0\ d) Cannot be determined **23. What is the [final current] while charging a capacitor?**\ a) High\ **b) Zero**\ c) Infinity\ d) Low **24. Capacitor is a device used to\_\_\_\_\_\_\_\_\_\_**\ **a) store electrical energy**\ b) vary the resistance\ c) store magnetic energy\ d) dissipate energy **25. [Capacitor stores] which type of energy?**\ a) kinetic energy\ b) vibrational energy\ **c) potential energy**\ d) heat energy **26. [Capacitor blocks]\_\_\_\_\_\_\_\_\_\_ after long time.**\ a) alternating current\ **b) direct current**\ c) both alternating and direct current\ d) neither alternating nor direct current **27. Which of the following is a [passive device]?**\ a) Transistor\ b) Rectifier\ **c) Capacitor**\ d) Vaccuum Tubes **28. For which medium capacitance is high?**\ a) Air\ b) Mica\ c) Water\ **d) Metal** **29. Which component in the DC generator produces a magnetic field?**\ a) Stator\ b) Commutator\ c) Armature\ **d) Carbon brushes** **30. Which component in alternator produces a [magnetic field?]**\ a) Frame\ b) Stator\ c) Regulator\ **d) Rotor** **31. At the start of the engine, the charging voltage is \_\_\_\_\_\_\_**\ a) Lower\ **b) Higher**\ c) Same\ d) Zero **32. In an alternator, which component controls the output?**\ **a) Voltage regulator**\ b) Cutout relay\ c) Current regulator\ d) Diode **33. What is the material of an alternator frame?**\ a) Cast iron\ b) Brass\ c) Copper\ **d) Aluminum** **34. If the lead-acid cell has a total of 17 cells, then what is the number of positive plates?**\ a) 9\ **b) 8**\ c) 7\ d) 6 **35. Which of the following [is not an advantage of the alternator]?**\ a) Higher output\ b) Lower weight\ c) Less maintenance\ **d) High efficiency** **36. Field coils in a generator produce permanent magnet.**\ a) True\ **b) False** **37. What is the colour of a positive plate of a lead-acid battery?**\ a) White\ b) Grey\ c) White\ **d) Brown** **38. What gets deposited on the plates of a discharged lead-acid battery?**\ a) PbO~2~\ b) Pb~2~O~4~\ c) Pb\ **d) PbSO~4~** **39. What is the number of positive plates in a battery cell?**\ a) One more than the negative plates\ b) Two less than the negative plates\ **c) One less than the negative plates**\ d) Two more than the negative plates **40. What is a maintenance-free battery?**\ a) A battery having lead-antimony plate grid\ **b) A battery having lead-calcium plate grid**\ c) A battery does not contain acid\ d) A battery does not contain water **41. Which of the following is the [advantage of alkaline] battery?**\ a) High energy density\ b) Good discharge characteristics over a wide range of temperature\ **c) The specific gravity of electrolyte remains the same**\ d) Cheap raw materials are used **42. Which of the following is the [best method] to measure the speed?**\ a) Mechanical tachometer\ b) Electrical tachometer\ **c) Magnetic pickup**\ d) Mechanical counters **43. [The function of the ignition system] is to \_\_\_\_\_\_\_\_\_\_\_\_\_ the flame propagation process.**\ a) stop\ **b) initiate**\ c) balance\ d) none of the mentioned **44. The total enthalpy required to cause the flame to be self sustaining and promote ignition, is given by the product of the surface area of the spherical flame and the enthalpy per unit area.**\ **a) True**\ b) False **45. A spark can be caused by applying a sufficiently low voltage between two electrodes separated by a gap.**\ a) True\ **b) False** **46. An ignition process obeys the law of \_\_\_\_\_\_\_\_\_\_\_\_\_\_\ a) conservation of mass**\ **b) conservation of energy**\ c) conservation of momentum\ d) none of the mentioned **47. As air is poor [conductor of electricity] an air gap in an electric circuit acts as a high \_\_\_\_\_\_\_\_\_\_\_\_\_**\ a) conductor\ **b) resistance**\ c) ignition\ d) none of the mentioned **48. An ignition system should provide a good spark between the \_\_\_\_\_\_\_\_\_\_\_\_\_ of the plugs at the correct timing.** a\) cathodes\ b) anodes\ **c) electrodes**\ d) none of the mentioned **49. An ignition system should be heavy, effective and reliable in service.**\ a) True\ **b) False** **50. The interference from the low voltage source should not affect the functioning of the radio and television receivers inside an automobile.**\ a) True\ **b) False** **CHƯƠNG 6: DESIGN OF CAR** **1. An FWD layout means the car has a four-wheel traction. True or false?** a\) True\ **b) False** **2. What is the idling RPM of a motorcycle petrol engine?**\ **a) 1200RPM**\ b) 700RPM\ c) 18000RPM\ d) 60RPM **3. Anything which burns in the presence of \_\_\_\_\_\_ is known as combustion.**\ a) water\ b) fuel\ **c) air**\ d) salt **4. What was used as fuel during the early invention of IC engines?**\ **a) Gun-powder**\ b) Petrol\ c) Potassium\ d) Kerosene **5. Otto cycle is used in which engine?**\ a) External combustion engine\ **b) Petrol engine**\ c) Diesel engine\ d) Steam engine **6. Who invented the first car which used gasoline as fuel?**\ a) Rudolf Diesel\ b) Nikola Tesla\ c) Nikolaus Otto\ **d) Karl Benz** **7. How many power strokes are produced in a 4-stroke diesel engine running at 1500RPM?**\ **a) 750**\ b)1500\ c) 1000\ d) 375 **8. Which of the mentioned below is not a component of the IC engine?**\ a) Piston\ b) Cylinder\ **c) Wheel**\ d) Spark plug **9. The black smoke coming out of a petrol engine is due to what particles?**\ a) Oxygen molecules\ b) Magnesium particles\ c) Nitrox\ **d) Carbon particles** **10. Which is the first company to use assembly line mode for the production of cars?**\ a) Fiat\ b) Mercedes Benz\ **c) Ford**\ d) Volvo **11. Which of the mentioned below is the external combustion engine?**\ a) Wankel engine\ **b) Steam engine**\ c) Petrol engine\ d) VTEC engine **12. The Wankel engine is also called a Rotary engine.**\ **a) True**\ b) False **13. Earlier, which material was used in pistons?**\ a) Aluminum alloy\ **b) Cast iron**\ c) Steel\ d) Brass **14. Why aluminum alloy pistons are used in highly rated engine?**\ a) Due to its thermal factor\ b) Due to its alloying element\ **c) Due to the piston speed**\ d) Due to circular **15. Cast iron pistons were used in low-speed cars, why?**\ a) Due to inertia force\ **b) Due to low-speed piston**\ c) Due to momentum\ d) Due to centrifugal force **16. Why aluminum alloy pistons need more clearance?**\ a) Free moment\ b) Good fixture\ **c) Thermal expansion**\ d) Cold start **17. Why cast iron was used in pistons earlier?**\ **a) Availability**\ b) Cost\ c) Luster property\ d) Design feature **18. Which is the electrolyte used in Li-ion battery?**\ a) Lead dioxide\ **b) Lithium-based gel**\ c) Sulfur dioxide\ d) Cobalt **19. Which of the following statement is true for the movement of electrons concerning the direction of current?**\ a) Same as the direction of current\ **b) Opposite direction of current**\ c) Does not depend on the direction of current\ d) No movement of electrons **20. Which is the material used to as anode in a lithium-ion battery?**\ a) Brass foil coated with graphite\ **b) Aluminum foil coated with graphite**\ c) Copper foil coated with graphite\ d) Stainless steel coated with graphite **21. Which of the following is formed at the graphite electrode during the charging process of a battery when the lithium-ion move through the separator?**\ a) Water\ b) Graphite\ c) Lithium hydroxide\ **d) Lithium carbide** **22. What is the maximum storage temperature in degree centigrade of a Li-ion battery?**\ a) 30\ b) 50\ **c) 60**\ d) 40 **23. Which of the following material is used as separator material in Lithium-ion battery?**\ a) Brass\ b) Metal sheet\ c) Paper\ **d) Plastic** **24. Which test is used to determine the evaporative emissions from an engine?**\ a) Canister test\ b) Cat aging test\ c) Vibration test\ **d) SHED test** **25. Which test is used to measure a coating's resistance to abrasions?**\ a) Coating and paint testing\ **b) Gravelometer testing**\ c) Emission bench testing\ d) Mechanical testing **26. Which gases cannot be measured in emissions bench testing?**\ a) Carbon monoxide\ b) Carbon dioxide\ c) Methane\ **d) Ethane** **27. An engine has a bore diameter of 160mm, what is the maximum number of studs in the engine?**\ a) 6\ b) 7\ **c) 8**\ d) 9 **28. Which of the following material is used in the manufacturing of studs?**\ a) Iron\ b) Nickel\ **c) Steel**\ d) Titanium **29. Which are the two forces experienced by the center crankshaft?**\ a) Tensile and compressive\ b) Tensile and Bending\ c) Compressive and torsional\ **d) Bending and torsional** **30. Which material is used for crankshaft?**\ a) Carbon steel\ b) Carbon fiber\ **c) Plain carbon steel**\ d) Bulged carbon steel **CHƯƠNG 7: FUTURE CAR** 1\. Which of the following statements is not correct with respect to alcohols as alternate fuel?\ **a) Anti-knock characteristics of alcohol are poor**\ b) Alcohol contains about half the heat energy of gasoline/liter\ c) Alcohol does not vaporize as easily as gasoline\ d) Alcohols are corrosive in nature 2\. Why a small amount of gasoline is added to alcohol?\ a) To reduce the emission\ b) To increase the power output\ c) To increase the power efficiency\ **d) To improve cold-weather starting** 3\. What is a dual fuel engine?\ **a) The engine which uses gaseous and liquid fuel**\ b) The engine which uses two liquid fuels\ c) The engine which uses two gaseous fuels\ d) The engine which uses one liquid and any other fuel 4\. Which of the following has the same combustion as HCCI (Homogeneous Charge Compression Ignition) engine?\ a) SI engine\ b) CI engine\ **c) Hybrid of both SI and CI engine**\ d) Wankel engine 5\. Which of the following is true for the HCCI engine?\ a) Emits high NO~x~ and soot\ b) Have a large power range\ c) Efficiency is comparatively less\ **d) Pre-catalyst hydrocarbon emissions are higher** 6\. For which of the following engine lean-burn concept is ideal?\ a) CI engine\ **b) SI engine**\ c) Free piston engine\ d) Wankel engine 7\. By which technique can the charge stratification be achieved?\ a) Injection\ b) Carburetion\ c) Lean burn technology\ **d) Injection as well as carburation** 8\. Which of the following is true for stratified charge engine?\ a) More prone for knock\ **b) Multi-fuel capabilities**\ c) More throttling losses\ d) Overall rich mixture 9\. What is true about the Wankel engine?\ a) It is a rotary external combustion engine\ b) It is more expensive\ **c) It has a longer operating cycle**\ d) It has less time to complete the combustion 10\. Where is the variable compression ratio used?\ **a) SI engine**\ b) CI engine\ c) Wankel engine\ d) HCCI engine 11\. Which of the following is true for stratified charge engine? a\) More prone for knock\ b) It uses an overall rich mixture\ c) It has a lot of throttling losses\ **d) It has multi-fuel capabilities** 12\. Which of the following is true about the Stirling engine?\ a) High efficiency\ b) Quiet operation\ c) Compatible with alternative and renewable energy\ **d) High efficiency, quiet operation and compatible with renewable energy** 13\. Which of the following is one of the major exhaust emissions from CI engines compared to SI engines?\ a) Oxides of nitrogen\ **b) Particulates**\ c) CO and CO~2~\ d) Unburnt hydrocarbon 14\. Which of the following causes the photochemical smog?\ a) Excess O~2~\ b) CO and CO~2~\ c) Soot and particulate matter\ **d) NO~x~ and HC** 15\. What does the blue smoke in diesel engine indicate?\ **a) Unburnt oil**\ b) HC\ c) NO~x~\ d) CO 16\. During which condition of the vehicle does NO~x~ emission in SI engine will be lowest?\ a) Cruising\ **b) Idling**\ c) Accelerating\ d) Decelerating 17\. For what purpose is the Rhodium used?\ a) To reduce CO and HC\ **b) To reduce NO~x~**\ c) To reduce CO\ d) To reduce HC 18\. Why is the fumigation technique used?\ a) To control HC\ b) To control NO~x~\ c) To control CO\ **d) To control smoke** 19\. Why are lead compounds added in petrol?\ a) Reduce knocking\ **b) Reduce HC emission**\ c) Reduce exhaust temperature\ d) Increase power output 20\. Which of the following cannot be reduced by thermal converters?\ a) CO\ b) HC\ c) Soot\ **d) NO~x~** 21\. What can be reduced by using exhaust gas recirculation (EGR) effectively?\ a) CO\ **b) NO~x~**\ c) HC\ d) CO and HC 22\. Three-way catalytic converters reduce the emission of CO, HC, and soot.\ a) True\ **b) False** 23\. On which of the following does brake mean effective pressure (BMEP) in an engine depend upon?\ a) Speed and torque\ **b) Speed and power**\ c) Torque\ d) Speed 24\. What is gasohol?\ a) 90% ethanol + 10% gasoline\ **b) 10% ethanol + 90% gasoline**\ c) 40% ethanol + 60% gasoline\ d) 50% ethanol + 50% gasoline 25\. Which of the following is a disadvantage of hydrogen as a fuel in IC engine?\ a) Storage is easy\ b) Low NO~x~ emissions\ **c) Detonating tendency**\ d) Easy handling 26\. Which of the following is the advantage of the hydrogen as a fuel?\ a) High volumetric efficiency\ b) Low fuel cost\ **c) No HC and CO emissions**\ d) Relatively safe 27\. What is the major disadvantage of LPG as a fuel in the automobile?\ a) Reduction in the life of the engine\ b) Less power compared to gasoline\ **c) Reduction in the life of the engine and less power compared to gasoline**\ d) Knocking tendency 28\. Why alcohols cannot be used in CI engines?\ a) Alcohols have a high self-ignition temperature\ b) The latent heat of vaporization is low\ **c) Alcohols have high self-ignition temperature and low latent heat of vaporization\ **d) High efficiency 29\. Which of the following is the major constituent of natural gas?\ **a) Methane**\ b) Ethane\ c) Butane\ d) Propane 30\. What is octane number of natural gas?\ a) 60-80\ **b) 80-100**\ c) \>100\ d) \