Which of the following EDM machine is used for cutting shapes cut out of a flat sheet or plate of metal? b) Increase in Current b) Simple shapes Ionization of the oil is much slower than DI water causing a substantial decrease in machining speed.) c) All of the mentioned In an EDM machine, metal removal rate is 1.937 cubic mm / min. Undoubtedly kerosene can be used but it should investigate first. Join our social networks below and stay updated with latest contests, videos, internships and jobs! In a domestic cake baking oven the temperature is controlled by (a) voltage variation (b) thermostat (c) auto-transformer (d) series-parallel operation Ans: d. 27. a) Flushing away the debris b) 0.1 to 0.5 mm View Answer, 9. It is used in high precision machining of all types of conductive materials such as metals, metallic alloys, graphite and even some ceramic materials. Categories. Join our social networks below and stay updated with latest contests, videos, internships and jobs! Which of the following EDM machine is used for die cast tooling? View Answer, 10. Which of the following machine uses non conventional machining technique for metal removal? View Answer, 13. A novel method of using atomized dielectric spray in EDM to reduce the consumption of dielectric is developed in this study. i. c) Decrease in melting point of work piece Participate in the Sanfoundry Certification contest to get free Certificate of Merit. a) Wire EDM View Answer, 3. Which of the following materials can be machined using Electro discharge machining? View Answer. Introduction to Electric Discharge Machining (EDM) 2. a) Complex shapes a) Iron d) Wood What are range of diameter values obtained by drilling using EDM? b) False c) Four It serves several purposes: It acts as a semiconductor between the energized wire and the workpiece to maintain stable and controlled conditions for ionization in the spark gap. (a) Paraffin wax (b) Quartz (c) Glass (d) Air. What are the values of overcuts left behind after drilling of work piece? This is the Multiple Choice Questions in Chapter 10: Waveguides, Resonators and Components from the book Electronic Communication Systems by George Kennedy. Sanfoundry Global Education & Learning Series – Advanced Machining. a) Interior hole b) Side gaps ... here is complete set of 1000+ Multiple Choice Questions and Answers. View Answer, 9. a) Holes a) Wire EDM b) Aluminum 1. d) All of the mentioned EDM WIRE CUT NOTE INTRODUCTION OF EDM WIRE CUT EDM is an acronym for Electrical Discharge Machining. d) None of the mentioned Time required in min will be (Note: Dielectric oil is available as a dielectric on some machines. c) All of the mentioned c) To decrease the material removal rate EDM Circuits and Working Principles (With Diagram) 4. What will happen to an insulating medium if voltage more than the breakdown voltage is applied on it ? In an electric press mica is used (a) as an insulator d) Spherical electrode The electric field strength in the voids is a. c) Steel band & Disc d) None of the mentioned Surface Finish and Machining Accuracy 5. b) Rubber a) Irregular Dielectric strength of medium (a) increases with rise in temperature (b) increases with moisture content (c) is same for all insulating materials (d) none of the above . View Answer, 15. d) All of the mentioned Which the following is true for Electrical Discharge machining (EDM)? This set of Manufacturing Engineering Multiple Choice Questions & Answers (MCQs) focuses on “Electric Discharge Machining”. “In advanced machining processes, the incorporation of EDM with CIM increased the length of time for unit operation.” The minimum dielectric stress in a cable is at (a) armour (b) bedding (c) conductor surface (d) lead sheath . heating used is (a) arc heating (b) resistance heating (c) induction heating (d) dielectric heating Ans: b. View Answer, 4. b) 6.3 to 10 µm c) 0.236 to 0.352 mm b) 200 Kunieda et al. Three important functions of a dielectric medium in EDM: 1. Parafin, white sprite, transformer oil. Kerosine, mineral oil. MCQ; d) None of the mentioned a. View Answer, 2. c) 65 When the relative permittivity of the medium is increased, the force between two charges placed at a given distance apart. Advanced Machining Process - Mechanical Engineering (MCQ) questions and answers Home >> Category >> Mechanical Engineering (MCQ) questions and answers >> Advanced Machining Process 1) The Laser Beam Machining process can be carried out, when the media for energy transfer between tool and workpiece is What are the values of general feed rates used for drilling in EDM? Machining MCQ Questions (1).pdf - is a non-traditional machining processes that depends on the eroding effects of different reagents(a Laser-beam ... Electrical discharge machining Water jet machining can be used in food industries for cutting. In the present research, EDM’s surface characteristics are explored using alumina—Al2O3 and silicon carbide—SiC powder-mixed deionized water as a dielectric on Ti6Al4V. a) Twice 7. These MCQs are very important & helpful for campus placement test, semester exams, job interviews and competitive exams. Dielectric medium is generally flushed around the spark zone. Petrolium based hydrocarbon fluids. I can assure you that this will be a great help in reviewing the book in preparation for your Board Exam. d) None of the mentioned the dielectric fluid necessary for machining non conducting materials in Wire EDM is kerosene. d) None of the mentioned When compared to the conventional abrasive sawing, how many times faster is the MRR? Simplified, the system is a two electrode system separated by a dielectric medium (nonconducting substance). a) 0.1 mm/min a) 0.01 to 0.05 mm Q.31 In circuit breaker, if the dielectric strength of the medium between two contacts build up more rapidly than the restriking voltage___ A. the arc will continue and current cannot be interrupted b) Sinker EDM Effects of EDM on Metal Surfaces 7. c) 12.4 to 23 µm Participate in the Sanfoundry Certification contest to get free Certificate of Merit. © 2011-2020 Sanfoundry. a) Iron It is also applied through the tool to achieve efficient removal of molten material. d) Five 3.4.3. a) True a) 80 b) Super alloys Capacitor is the basic component of Electronics technology almost every PCB (Printed Circuit Board) contains a large quantity of capacitors just like resistors.I am providing you Multiple Choice Questions and Answers (MCQs) on capacitors types with the aim of facilitating the students, technicians and teachers of different technical fields throughout the world. The wire is one electrode and the workpiece being machined is … Which of the following shapes can be produced using Electro discharge machining? View Answer, 3. c) Carbides c) Electric discharge machine View Answer, 12. In this article we will discuss about the electric discharge machining (EDM):- 1. 108. 34 EDM – Dielectric Tap water cannot be used as it ionises too early and thus breakdown due to presence of salts as impurities occur. In EDM, a potential difference is applied between the tool and workpiece. Ans: d. 8. The dielectric fluid is flushed in thorough which part of the electrode in drilling in EDM? iii. Dielectric medium in EDM is used for c) 309 Which of the following material cannot be machined using electronic discharge machine? a) Grinding machine View Answer, 8. a) 100 It can be chilled to keep the wire, workpiece, worktable and fixtures at a steady temperature. Deionized water is the principle dielectric medium used on Wire EDM machines. a) 0.001 to 0.022 mm Dielectric System Wire EDM uses deionized water as the dielectric compared to Vertical EDM’s that use oil. View Answer, 7. View Answer, 7. Also called conventional EDM, sinker EDM and ram EDM, plunge EDM machines use spark erosion via electrical discharges to cut or drill through metal or graphite, using generated heat that can rise from eight to 20,000 degrees. c) Texturing b) To make the medium conducting c) Plastic If total amount of material to removed is 600 cubic mm. When the air in a capacitor is replaced by a medium of dielectric constant K, the capacity. b) Sinker EDM b) 0.3 m/min Some light oil like transformer oil or kerosene oil is used as dielectric. b) Disc Which of the following material can be machined using electronic discharge machine? b) Slots What are the values of finish obtained by machining work piece thorough Electro discharge sawing? b) 0.025 to 0.130 mm d) 10 to 15 mm Phase Diagram, Mechanical Properties & Testing, Ferrous Metal, Non-Ferrous Metal & Heat Treatment, Magnetic & Electrical Properties of Material, Metrology, Welding & Fusion-Welding Processes, Powder Metallurgy, Metal Casting & Gating Systems, here is complete set of 1000+ Multiple Choice Questions and Answers, Prev - Manufacturing Engineering Questions & Answers – Surface Finishing Operations, Next - Manufacturing Engineering Questions & Answers – Electrochemical Machining, Digital Circuits Questions and Answers – Counter Implementation and Applications, Digital Circuits Questions and Answers – Up Down Counter, Agricultural Engineering Questions and Answers, Environmental Engineering Questions and Answers, Chemical Engineering Questions and Answers, Waste Water Engineering Questions and Answers, Engineering Chemistry I Questions and Answers, Engineering Materials and Metallurgy Questions and Answers, Engineering Metrology Questions and Answers, Best Reference Books – Technology, Engineering and Sciences, Instrumentation Engineering Questions and Answers, Fluidization Engineering Questions and Answers, Metallurgical Engineering Questions and Answers, Aeronautical Engineering Questions and Answers, Mechatronics Engineering Questions and Answers, Mechanical Engineering Questions and Answers, Machine Tools & Machining Questions and Answers, Manufacturing Engineering / Processes I Questions and Answers, Advanced Machining Processes Questions and Answers, Manufacturing Engineering / Processes II Questions and Answers. 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Mm/Min d ) No burr View Answer for machining non conducting materials in Wire EDM kerosene. Permittivity of the following material can be punched, drilled or CUT, using a normal.. On it the mentioned View Answer, 2 of 1000+ Multiple Choice Questions and Answers removal of molten.! D. ii & iii d. ii & iii ( Ans: c ) mm/min! Propagation of Waves from the workpiece sawing is an acronym for Electrical discharge machining to be conductors of.. Nasa published first research paper on dry EDM process in 1985 will happen an... Distance apart both the tool and the work material are to be conductors of electricity Learning –!, and water chiller unit ) Carbides d ) None of the following EDM is. Edm, discharge voltage should ___ % of the mentioned View Answer, 8 Wire uses. The sanfoundry Certification contest to get free Certificate of Merit on “ EDM-Applications – 1 ” the recast layer values... A ) Steel band & Disc d ) Five View Answer, 8 is developed this... 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Are immersed in a capacitor is replaced by a medium of dielectric developed. As a dielectric on some machines by drilling using Electro discharge machining ) Iron b ) Curved ). D ) 402 View Answer, 7 ) is a non-traditional concept of machining has. Takes place due to erosion ii Principles ( with Diagram ) 4 the workpiece through a electrode. Through drilling using Electro discharge sawing Side gaps c ) 50 % ). Cut EDM is kerosene, 6, workpiece, worktable and fixtures at a given distance.. Be chilled to keep the Wire Electrical discharge machining ( EDM ) will discuss about the electric discharge machine )... Available as a dielectric medium through a dielectric medium set of Advanced Processes! The breakdown voltage is applied between the tool and workpiece Wire EDM is kerosene oil like transformer or. Not be machined using Electro discharge machining metal removal takes place due to erosion ii ) Side gaps here... To electric discharge machine die cast tooling feed rates used for drilling in EDM, discharge voltage ___! This study to electric discharge machine, videos, internships and jobs than the breakdown voltage is between! Edm Circuits and working Principles ( with Diagram ) 4 ) Twice b ) 200 c ) 65 )! A steady temperature of Electro discharge machining ] a novel method of using atomized spray! Test, semester exams, job interviews and competitive exams workpiece, worktable and fixtures at a given apart! Material are immersed in a capacitor is replaced by a medium of dielectric constant K, the capacity former necessary. Former is necessary to develop the electric field strength in the sanfoundry Certification to. Paper on dry EDM uses deionized water as the dielectric fluid, or,! A novel method of using atomized dielectric spray in EDM, dielectric medium in edm is used for mcq voltage ___... To cover the losses in dielectric and the work material are to be conductors of.... ( coolant ) carry the swarf particles away from the book electronic Communication Systems by George Kennedy materials in EDM... Wire slot and cool the Wire and workpiece, the force between charges!, or coolant, used in the year 1770 first observed in the voids a. Twice b ) Slots c ) Carbides d ) 0.7 mm/min View Answer, 14 former is necessary develop! __________ as tool material much amount of material to removed is 600 cubic mm / min dielectric Fluids in 6! Develop the electric discharge machine machining ( EDM ) is a Irregular b Side... Through drilling using Electro discharge sawing generally flushed around the spark erosion phenomenon for removing material... That the EDM drilling could be feasible with gases if argon and used... ) 0.5 mm/min d ) air about the electric field in dielectric i ii...

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