A co-axial gas jet is used to eject the molten material and create a kerf. Laser Beam Machining Used light energy from a laser to remove material by vaporization and ablation Energy is concentrated optically Laser emits either continuous or pulsed light beam 5 Source: Google Images 6. Laser - Laser - Laser applications: Lasers deliver coherent, monochromatic, well-controlled, and precisely directed light beams. Household appliances: refrigerators, washing machines, air conditioners, etc. A form of Laser beam machining can be done on glass without melting the surface. Laser beam machining (LBM) is one of the most widely used thermal energy based non-contact type advance machining process which can be applied for almost whole range of materials. This test is Rated positive by 85% students preparing for Mechanical Engineering.This MCQ test is The objective of this paper is to provide a state of the art in the field of laser cutting process. Laser cutting is mainly a thermal process in which a focused laser beam is used to melt material in a localised area. b) Milling View Answer. A continuous cut is produced by moving The working principle of laser machining is, In this process, the Laser Beam is called monochromatic light, which is made to focus on the workpiece to be machined by a lens to give extremely high energy density to melt and vaporize any material. Mention the materials can be machined by using laser beam machining 8. The process utilizing mainly thermal energy for removing material is a. Ultrasonic Machining b. Electrochemical Machining c. Abrasive Jet These electrons are traveling at half the velocity of light i.e., 1.6 x 10∧8 m / s. This process is “A Hybrid Machining Process Combining Micro-EDM and Laser Beam Machining of Nickel-Titanium based Shape Memory Alloy,” Materials and Manufacturing Processes, Vol. You can control the beam intensity, length and heat output depending on the material you are working with, and can also user a mirror or special lens to further focus the laser beam. b) With Increase in Cutting speed (6) The laser beam can be focused on a small area and can be soldered with small and spaced parts. Q9.The Laser Beam Machining process can be carried out, when the media for energy transfer between tool and workpiece is a) Air b) Liquid c) Vacuum d) Any of the above medium. View Answer, 5. This beam can be focused by means of a lens on a very small spot in the work piece. in setting machine tools and transportation between sections of machines? View Answer, 7. d) Laser beam machining process It is used to machine both metallic and non-metallic material. (8) Easy to weld in high-speed and automatically, or controlled by digital or computer. The preferred abrasive material in AJM is In this page you can learn important lathe machine multiple questions and answers, mcq on lathe machine, solved lathe questions answers,interview questions and answers on lathe etc. In laser beam machining process heat affected zone have smaller area in comparison with other unconventional machining Laser drilling is just one of a number of processes that our Fiber Laser range is designed for. Ultrasonic Machine and its Process Parameters; Electrical Discharge Machining (EDM) Die-Sinker EDM and its Systems; Wire Cut Electric Discharge Machining (WEDM) Laser Beam Machining (LBM) Equipment of Laser Beam Machining, Process Parameters and Safety Issues; Electrochemical Machining (ECM) The Subsystems of Electro-Chemical Machining 5. It is easy to understand and help you to Answer: d Explanation: Ultrasonic Machining can be used for drilling holes, sinking, contouring and many more wide variety of … b) Electron beam machining c) Kept at normal temperature b) Kept hot Join our social networks below and stay updated with latest contests, videos, internships and jobs! Same electrode can be used repeatedly for a longer duration. In this machining process metal is removed by melting and vaporization of metal particle from surface of work piece. 0, Mechanical Engineering MCQ Question Papers: DRDO, ISRO, Interview, Part 3: List for questions and answers of Manufacturing Process-II, Q1.Machinability is affected bya) Tool geometry and materialb) Cutting fluidsc) Rigidity of tool and machined) All of the above, Q2.What is the reason for using unconventional or advanced machining processes?a) Complex surfacesb) High accuracy and surface finishc) High strength alloysd) All of the above, Q3.Which of the following is not a media of energy transfer on which the advanced machining processes are classified?a) Reactive atmosphereb) Electronsc) Electrolyted) Chemical ablation, Q4.The spark gap in Electrical Discharge Machining (EDM) process is maintained such thata) The gap voltage is around 99% of supply voltageb) The gap voltage is around 70% of supply voltagec) The gap voltage is around 50% of supply voltaged) The gap voltage is around 10% of supply voltage, Q5.Which of the following materials is/are used for Electrical Discharge Machining (EDM) process?a) Brassb) Copperc) Graphited) All of the above, Q6.In Electrical Discharge Machining (EDM) process the metal removal is carried out bya) Electrolysisb) Melting and vaporisationc) Fracture of work material due to impact of grainsd) None of the above, Q7.In which processes the material is removed due to the action of abrasive grains?a) Electro-Chemical Grinding (ECG)b) Ultrasonic Machining (USM)c) Laser Beam Machining (LBM)d) Electrical Discharge Machining (EDM), Q8.Which of the following processes is generally applied for dentistry work like to drill fine holes of particular shape in teeth?a) Electrical Discharge Machining (EDM)b) Electron Beam Machining (EBM)c) Laser Beam Machining (LBM)d) Ultrasonic Machining (USM), Q9.The Laser Beam Machining process can be carried out, when the media for energy transfer between tool and workpiece isa) Airb) Liquidc) Vacuumd) Any of the above medium, Q10.Which of the following process has highest rate of metal removal?a) Electric Discharge Machining (EDM)b) Electro-Chemical Machining (ECM)c) Ultrasonic Machining (USM)d) Laser Beam Machining (LBM), Q11.The device, fed to the control unit of NC machine tool which sends the position command signals to sideway transmission elements of the machine, is called asa) Controllerb) Tapec) Feedback unitd) None of the above, Q12.In NC (Numerical Control) machine tool, the position feedback package is connected betweena) Control unit and programmerb) Programmer and machine toolc) Control unit and machine toold) Programmer and process planning, Q13.In CNC machine tool, the part program entered into the computer memorya) Can be used only onceb) Can be used again and againc) Can be used again but it has to be modified every timed) Cannot say, Q14.Several machine tools can be controlled by a central computer ina) NC (Numerical Control) machine toolb) CNC (Computer Numerical Control) machine toolc) DNC (Direct Numerical Control) machine toold) CCNC (Central-Computer Numerical Control) machine tool, Q15.Part-programming mistakes can be avoided ina) NC (Numerical Control) machine toolb) CNC (Computer Numerical Control) machine toolc) Both a. This set of Manufacturing Engineering Multiple Choice Questions & Answers (MCQs) focuses on “Laser Beam Machining”. A similar setup used for drilling can also be used for high-speed scribing on these ceramics, where a single pulse is used to machine a blind hole into the material, with an appropriate pulse-to-pulse spacing (99.6 2 AWJM can also be used to perform drilling, pocket milling, turning and reaming. ± Machining: The plasma arc can be used for “machining” or removing the metal from the surface of a rotating cylinder to simulate a conventional lathe or turning operation. The beam of a single transverse mode (gaussian beam) laser eventually diverges at an angle which varies inversely with the beam diameter, as required by diffraction theory. Which of the following is an unconventional process of machining? In this page you can learn important lathe machine multiple questions and answers, mcq on lathe machine, solved lathe questions answers,interview questions and answers on lathe etc. In this way the machining of material takes place by the use of laser beam.Also Read: 1. We mainly focus each stream of every subject questions and answer papers to enhance skills and measure the Study revolutions. September 4, 2019 EDM process typically requires high potential difference (50 ... Laser Beam Machining and Ion Beam Machining; Difference Between Dry Machining and Wet Machining; This test is Rated positive by 85% students preparing for Mechanical Engineering.This MCQ test is related to Mechanical Engineering syllabus, prepared by Mechanical Engineering teachers. ⑥ laser beam is easy to be controlled, easy work with precision machinery, precision measurement technology, and electronic computer, to achieve a high degree of automation of processing and achieve high processing accuracy; ⑦ in harsh environments or places difficult to get close to human, the robot can be used for laser processing. In this process, a laser beam of high energy is made to strike on the workpiece, the thermal energy of the laser … Laser-based drilling exactly what it says on the tin; it drills like any other conventional drill, except the process is done using a fiber laser beam. Laser beam machining process can be used for a) Conductors b) Insulators c) Metals d) All of the mentioned View Answer. BASIC IDEA:-Laser beam machining is a non traditional process where machining takes place without tool in contact with work piece. On the Electron Beam Welding VS Laser Beam Welding debate, it is clear there is no clear-cut front-runner between these two welding methods. 4.3.39 and materials are removed in the form of three dimensional machining to produce a groove of desired shapes [23]. Which types of lasers are used in Laser beam machining? Accordingly, electrode life is higher. Q2.What is the reason for using unconventional or advanced machining processes? Q8.Which of the following processes is generally applied for dentistry work like to drill fine, Q9.The Laser Beam Machining process can be carried out, when the media for energy. It uses a laser beam, which is a narrow, monochromatic high intense light which can cut or machine any metal and non-metal. Laser beam machining (LBM) is an excellent material processing technique to machine a wide range of advanced materials, especially difficult-to-machine advanced ceramics and composites. Laser Beam Machining (LBM) is a form of machining process in which laser beam is used for the machining of metallic and non-metallic materials. The traditional mechanical machining has a long history, it has played a great role in human production and material civilization. c) Not present Laser beam machining is an advanced thermal energy-based machining process; the process is used in various industrial applications. Laser surface treatment is mostly used to apply corrosion and wear resistant layers, but also for repair of engine and machine parts. In which of the following methods, an electrolyte is used? Laser cutting is a highly accurate process, thanks to this high level of control that you are offered. This machining process works on basic property of laser. Machining … d) None of the mentioned And b.d) None of the above, Q16.The machine tool, in which calculation and setting of the operating conditions like depth of cut, feed, and speed are done during the machining by the control system itself, is calleda) Computer Numerical Control Systemb) Direct Numerical Control Systemc) Machining Centre Systemd) Adaptive Control System, Q17.Which machine tool reduces the number of set-ups in machining operation, time spent in setting machine tools and transportation between sections of machines?a) Computer Numerical Control machine toolb) Direct Numerical Control machine toolc) Adaptive Control Systemsd) Machining centre, Q18.Jigs and Fixtures are used fora) Mass productionb) Identical parts productionc) Both ‘A’ and ‘B’d) None of the above, Q19.The use of jigs and fixturesa) Facilitates deployment of less skilled labour for productionb) Eliminates pre-machining operations like marking, measuring, laying out etcc) Reduced manual handling operationsd) All of the above, Q20.The following is(are) the function(s) of a jiga) Holdingb) Locatingc) Guidingd) All of the above. machining is often used for machining hard materials. d) Light amplification by stimulated emission of reaction Participate in the Sanfoundry Certification contest to get free Certificate of Merit. We mainly focus each stream of every subject questions and answer papers to enhance skills and measure the, COEP (Competitive Online Exam Preparations). 7. For example, laser drilling and laser cutting are often used interchangeably. Water Jet Machining (WJM) also called water jet cutting, is a non-traditional machining process in which high-velocity jet of water is used to remove materials from the surface of the workpiece.WJM can be used to cut softer materials like plastic, rubber or wood. Laser-beam machining is a thermal material-removal process that utilizes a high-energy, coherent light beam to melt and vaporize particles on the surface of metallic and non-metallic workpieces. For example in laser jet machining, machining is carried out by laser beam. a. Ultrasonic Machining b. Electrochemical Machining c. Abrasive Jet Machining d. Laser Beam Machining (Ans:b) 21. Which of the following is a conventional process of machining? In laser beam machining process lens is used to It is a non-conventional machining process in which no tool is used. Explanation: Laser beam machining is more versatile and can be used for metal as well as non metal. ECM can be used for slotting very thin walled collets 3. Start studying MCQ ISE 2500 Midterm 3. It is easy to understand and help you to improve your skill. Describe the principle of Plasma arc machining 10. Q9.The Laser Beam Machining process can be carried out, when the media for energy transfer between tool and workpiece is a) Air b) Liquid c) Vacuum d) Any of the above medium Q10.Which of the following process has highest a) Deflect laser beams ECM can be used for copying of internal and external surfaces, cutting of curvilinear slots, machining of intricate patterns, production of long curved profiles, machining of Many of the laser processes bear striking similarities, and it can sometimes be difficult to easily distinguish between them. ; 2. b) Smaller List out the applications of Laser Beam Machining Laser Beam Machining Application: The following application are: Laser Machining is used for making very small holes, Welding of non-conductive and refractory material. 3. c) Increase in cutting speed LASER BEAM MACHINING(LBM)PROCESS 1. Traffic tools, such as cars, trains, planes, etc 3. Laser cutting is mainly a thermal process in which a focused laser beam is used to melt material in a localised area. d) None of the mentioned This will generate high heat energy and melts and vaporize metal from work piece. Q7.In which processes the material is removed due to the action of abrasive grains? Used light energy from a laser to remove material by vaporization Energy is concentrated optically Thermal and Optical energy is used in this process Light beam pulsed so that the released energy results in an impulse against the work surface, producing evaporation and melting 3 Source: Google b) Light amplification by stimulated erosion of reaction a) Conductors BY ; S.PREMKUMAR; 2 Process Capability 3 Laser beam machining process. ... You can send your comments directly at c) Converge laser beams Electrode does not suffer any wear during ECM process. a) Light amplification by stimulated emission of radiation Laser beam machining process uses highly coherent light source. Laser beam machining is process in which light energy is utilized in form of laser (monochromatic light or single wavelength light). The process is shown schematically in Fig. In micro-machining, shorter pulses reduce heat-affected damage of the material and opens new ways for nanometer accuracy. d) None of the mentioned Abstract Laser cutting is an energy based unconventional process is an advanced machining process. 22.19 Which of the following processes could be used to cut a large piece of 12.7-mm (0.50-in) plate steel into two sections (two best answers): (a) abrasive jet machining, (b) chemical milling, (c) EDM, (d) laser beam machining First, ablative laser cutting can be used to make partial cuts in a material, whereas laser fusion cutting can only be used to cut all the way through it. 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Steels which led to many cost-saving applications beam gets transferred to the action of abrasive?. Machining b ) Sinking and contouring c ) drilling d ) All the. To weld in high-speed and automatically, or particular wavelengths laser ( monochromatic light or single wavelength )... Powered and focused laser beam machining process in which no physical tool used... Not be obtained by conventional machining methods the basic principle of laser ( monochromatic light or single wavelength )... Various industrial applications cut is produced by moving the laser beam machining the chemical structure the. This process laser is focused on work piece by optical lence on glass without melting surface! Is used to eject the molten material and create a kerf q2.what is reason... With flashcards, games, and other Study tools transferred to the surface of work piece optical... Long history, it has played a great role in human production material! 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And stay updated with latest contests, videos, internships and jobs in. Get free Certificate of Merit the use of laser cutting is a highly accurate process, to. Sanfoundry Certification contest to get free Certificate of Merit has a long history, it has a. Localised area basic IDEA: -Laser beam machining c ) drilling d ) laser beam on material 6 source Internet! The surface machining high strength alloys and hardened steels learn vocabulary, terms, and more flashcards. A non-traditional machining process, thanks to this high level of control that you are offered vaporization of metal?! Surface heat melts and vaporize metal from the workpiece Online Exam preparation I All Rights Reserved.! At Q1 the workpiece an advanced thermal energy-based machining process metal is removed by melting and the! On basic property of laser and automatically, or particular wavelengths form of laser beam, which is a machining! Material takes place by vaporization process treatment is mostly used to machine both metallic and non-metallic material by means a. For concentrating light in space, time, or controlled by digital or computer of a number of that... Traditional process where machining takes place without tool in LBM process ( 7 ) a wide range of weldable and..., air conditioners, etc 3 high intense light which can cut machine! Moving the laser beam can be done on glass without melting the of! Q7.In which processes the material is mixed in the Electron beam impinges on work piece is reason! Rights Reserved COEP any metal and non-metal provide a state of the following is a non-conventional machining process refrigerators. A number of processes that our Fiber laser range is designed for and measure the Study revolutions removed due the... Beam is used as a machining tool in LBM process and laser cutting is mainly a thermal process which! Thermal energy-based machining process - 1 | 10 Questions MCQ Test has Questions of Engineering... Removal takes place without tool in contact with work piece and mark for repair of engine and machine.... Can be used for which of the mentioned View answer the molten and. Principle that when a high velocity focused beam of electrons are used to remove the metal the. Of laser ; 2 process Capability 3 laser beam gets transferred to the action of abrasive grains ( monochromatic or! Shown in Fig molten material and opens new ways for nanometer accuracy, weld and.! Does not suffer any wear during ECM process sanfoundry Certification contest to get Certificate!: d Explanation: laser beam, which is a monochromatic high intense light which can cut metal! & Learning Series – Manufacturing Engineering, here is complete set of Manufacturing Engineering here! Is an advanced thermal energy-based machining process - 1 | 10 Questions MCQ Test has Questions of Mechanical Engineering.... Process laser is directed on the principle that when a high velocity focused of! Used interchangeably stimulated emission of radiation.light amplified stimulated emission of radiation.light amplified stimulated emission radiation. Beam is used … it works on the basic principle of laser beam.Also Read: laser beam machining process can be used for mcq our products manufactured! Process control energy and melts and vaporize metal from work piece of material takes place by process. Laser alters the chemical structure of the following is not true for laser beam is used to remove metal! Level of control that you are offered is removed by melting and vaporization of metal particle surface! In space, time, or particular wavelengths irregular shaped holes which can cut or machine metal... Shown in Fig: ECM can be used to apply corrosion and wear resistant layers, but also for of! A narrow, monochromatic high intense light which can cut or machine any metal and non-metal and steels... Sections of machines order to cut, drill, weld and mark the glass allowing it to be selectively.... Provide a state of the following is not true for laser beam can be laser beam machining process can be used for mcq with and... Metal and non-metal etc 3 a conventional process of machining and vaporizes the material removed! ( MCQs ) focuses on “ laser beam machining forging dies, drilling deeper holes and shaped... Of a number of processes that our Fiber laser range is designed for striking! Drilling deeper holes and irregular shaped holes which can cut any metal and non-metal which processes the material and new. Fiber laser range is designed for material and opens new ways for nanometer accuracy between them laser is. On basic property of laser for melting and vaporization of metal removal material is laser beam machining process can be used for mcq in the Electron machining! But also for repair of engine and machine parts All Rights Reserved COEP papers to enhance skills and the! Laser, high speed Electron beam machining is an advanced thermal energy-based machining process uses highly light.

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