Explanation: Laser beam machining is more versatile and can be used for metal as well as non metal. 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 The process utilizing mainly thermal energy for removing material is a. Ultrasonic Machining b. Electrochemical Machining c. Abrasive Jet It is easy to understand and help you to a) Decrease in power supply 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. ± 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. For example, laser drilling and laser cutting are often used interchangeably. View Answer, 4. To practice all areas of Manufacturing Engineering, here is complete set of 1000+ Multiple Choice Questions and Answers. Jan 02,2021 - Unconventional Machining Process - 1 | 10 Questions MCQ Test has questions of Mechanical Engineering preparation. admin In the Electron Beam Machining process, a high velocity focused beam of electrons are used to remove the metal from the workpiece. Laser Beam Machining (Ans:d) 20. Participate in the Sanfoundry Certification contest to get free Certificate of Merit. a. Ultrasonic Machining b. Electrochemical Machining c. Abrasive Jet Machining d. Laser Beam Machining (Ans:b) 21. For machining of plastic material which of the unconventional process can be used effectively? 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 d) Light amplification by stimulated emission of reaction c) Drilling 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. a) Electro chemical machining AWJM can also be used to perform drilling, pocket milling, turning and reaming. 4, pp. (6) The laser beam can be focused on a small area and can be soldered with small and spaced parts. b) Decrease in laser beam spot diameter in setting machine tools and transportation between sections of machines? This machining process works on basic property of laser. 4. 1. All Rights Reserved. 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. It is used to machine both metallic and non-metallic material. d) None of the mentioned We mainly focus each stream of every subject questions and answer papers to enhance skills and measure the, COEP (Competitive Online Exam Preparations). 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. d) None of the mentioned Laser drilling is just one of a number of processes that our Fiber Laser range is designed for. In laser beam machining process heat affected zone have smaller area in comparison with other unconventional machining LASER BEAM MACHINING(LBM)PROCESS 1. Traffic tools, such as cars, trains, planes, etc 3. c) Laser beam machining process Laser Beam Machining Application: The following application are: Laser Machining is used for making very small holes, Welding of non-conductive and refractory material. a) Conductors Water Jet Machining – Working Principle, Advantages and Dis… • Machining is the broad term used to describe removal of material from a workpiece • Includes Cutting, Abrasive Processes (grinding), Advanced Machining Processes (electrical, chemical, thermal, hydrodynamic, lasers) • Automation began when lathes were introduced in 1700s • Now have computer numerical control (CNC) machines Laser cutting is mainly a thermal process in which a focused laser beam is used to melt material in a localised area. c) Metals ; 2. Although lasers make poor choices for general-purpose illumination, they are ideal for concentrating light in space, time, or particular wavelengths. With Photosensitive glass, the laser alters the chemical structure of the glass allowing it to be selectively etched. 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. Answer: d Explanation: Laser beam machining is more versatile and can be used for the metal as well as non metal. Machining … d) None of the mentioned Household appliances: refrigerators, washing machines, air conditioners, etc. This set of Manufacturing Engineering Multiple Choice Questions & Answers (MCQs) focuses on “Laser Beam Machining”. It is a non-conventional machining process in which no tool is used. View Answer, 10. 2. Electron beam machining is same as laser beam machining process in which except laser, high speed electron beam impinges on work piece. View Answer, 6. b) Smaller d) None of the mentioned September 4, 2019 Laser surface treatment is mostly used to apply corrosion and wear resistant layers, but also for repair of engine and machine parts. Q10.Which of the following process has highest rate of metal removal? Which types of lasers are used in Laser beam machining? In order to cut harder materials like metals or granite, an abrasive material is mixed in the water. These electrons are traveling at half the velocity of light i.e., 1.6 x 10∧8 m / s. This process is b) Electron beam machining Q1. Laser machining process works on the basic principle of 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. It uses a laser beam, which is a narrow, monochromatic high intense light which can cut or machine any metal and non-metal. ultrashort lasers. c) Increase in cutting speed 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. b) Electron beam machining 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 High powered and focused laser beam machining repair of engine and laser beam machining process can be used for mcq.! And remove material from the w/p ) 20 and wear resistant layers, but for... 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