To practice all areas of Advanced Machining, here is complete set of 1000+ Multiple Choice Questions and Answers. In electro discharge machining, tool is made of. Increasing the capacitance causes the discharge to increase and increase both the peak current and discharge time. Answer: Option D . Manufacturing And Production Technology MCQ question is the important chapter for a Mechanical Engineering and GATE students. 1. List the desirable characteristics of a dielectric. Explain why tool shape in the EDM process should be complementary to the final form? SURVEY . View Answer, 2. Mechanical Engineering MCQ Question Papers: DRDO, ISRO, Interview. Due to the inertia of the surrounding fluid, the pressure within the spark becomes quite large and may possibly assist in “blasting” the molten material from the surface leaving a fairly flat and shallow crater. It may be considered as a vertical shaper. Why is a servo-controlled system required in EDM? If What you looking for is not here, you may send a request to modify articles, Notes, and Content modification, Feedback, Suggestions here (Team will reply as early as Possible ): Contact Form or Using Whatsapp, © 2021 Copyright Learn Mechanical Engineering, Electro Discharge Machining ( EDM ) | Interview question and Answers, spark conductor that must ionize under an applied voltage, deionize the spark gap after the discharge has occurred, carry the swarf particles away from the working gap (flushing medium). 19. Steel is used because it can match the parting planes of the moulds in which half the mould is used as the electrode and the other half is used as the workpiece. 1) High speed steel Also by properly configuring the tool design, tool wear can be minimized. What are the factors upon which the material removal rate and surface roughness depends? Electrical discharge machining process works on the basic principle of spark generation and metal removed by spark erosion. It is normally used for mass production and is used for working extremely hard materials or materials that are difficult to machine using conventional methods. Sanfoundry Global Education & Learning Series – Advanced Machining. The controlled pulsing of the direct current between the tool and the workpiece produces the spark discharge. EDM process involves a controlled erosion of electrically conductive materials by the initiation of rapid and repetitive spark discharges between the tool and workpiece separated by a small gap. Main limitations of EDM are longer machining times, high tool wear. View Answer, 8. a) Heat resistant alloys b) Super alloys c) Carbides d) All of the mentioned View Answer. (b) High Speed Steel. In advanced machining processes, what is the full form of EDM? It should have high flash point so as to avoid any fire hazards. b) 40 % c) 70 % a) 1940s Q13. The abrasive slurry used in ultra-sonic machining contains fine particles of. It does not melt rather vaporizes. What are the limitations of EDM process? 1. It should be economical and easily available. B. 1.In abrasive jet machining, as the distance between the nozzle tip and the work surface increases, the material removal rate. View Answer. Oil under pressure is moving in every hydraulic circuit. Brass. No tool wear. Jan 01,2021 - Unconventional Machining Process - 3 | 10 Questions MCQ Test has questions of Mechanical Engineering preparation. 29. Option (a) is correct. Q2. The Ecyclopædia Britannica gives a short explanation of EDM:“EDM involves the direction of high-frequency electrical spark discharges from a graphite or soft metal tool, which serves as an electrode, to disintegrate electrically conductive materials such as hardened steel or carbide.”To put it more simply, electrical discharge machining is a manufacturing process that precisely removes material from conductive materials using an electrode. How is the arc gap controlled in EDM? Electrical discharge machining (EDM) is a non-traditional machining process based on removing material from a part by means of a series of repeated electrical discharges between tools, called electrodes, and the part being machined in the presence of a dielectric fluid. As the potential difference is applied, electrons from the tool start to move towards the workpiece. View Answer, 6. Answer. Learn how your comment data is processed. This set of Advanced Machining Processes Multiple Choice Questions & Answers (MCQs) focuses on “Electro Discharge Machining-Introduction”. In electro-discharge machining, dielectric is used to (A) Help in the movement of the sparks (B) Control the spark discharges (C) Act as coolant (D) All of these. d) All of the mentioned 19. The principle and working of an WEDM is similar to the EDM but instead of using a solid electrode, a wire (about 0.05-0.30mm diameter) is used as an electrode in EDM. The metal removal takes place due to erosion ii. 3. c) 20 The evolution of wire EDM took place in which part of history? Required fields are marked *. Hydraulic seals - Definition, Types, Diagram , Function, Failure, Application. Optimum distance between the tool and the workpiece so that spark can run and cause useful erosion. 10. It should have sufficient and stable dielectric strength to serve as an insulation between the tool and work till the breakdown voltage is reached. Ethylene glycol and water miscible compounds. From: Machining and machine-tools, 2013 d) None of the mentioned It is the distance by which the machined hole in the work piece exceeds the electrode size and is determined by both the initiating voltage and the discharge energy. Why the Water-jet Machining is not suitable for very thick work piece? Part 3: List for questions and answers of Manufacturing Process-I. 5. More time in the fabrication of the electrodes. Electrical discharge machining (EDM), also known as spark machining, spark eroding, die sinking, wire burning or wire erosion, is a metal fabrication process whereby a desired shape is obtained by using electrical discharges (sparks). Correct Answer. All Rights Reserved. What are the principle components of EDM process? Electro -discharge machining of advanced materials Mohand Ouidir Benhaddad Master of Philosophy (MPhil) University of Edinburgh 1993 . View Answer, 5. -The size of impression on work piece is exactly the same as that on electrode (tool). a) Thin walls View Answer, 7. Explanation: Electro discharge machining is used to machine complex shapes to a high degree of accuracy. d) Mechanical erosion Since oil is a liquid it has the tendency to 'leak' through every gas/slot it finds during movement. a) True EDM requires that a constant arc gap be maintained between the electrode and the work piece to obtain maximum machining efficiency. a) 10 % In an orthogonal cutting, the depth of cut is halved and the feed rate is double. Power supply, Dielectric system, electrodes: workpiece and tool and servo system (tool feed). (d) Plain Carbon Steel. In advanced machining processes, what is the full form of EDM? “In EDM, process is affected by hardness of material.” (c) Cast Iron. c) Thirty answer choices . What are the various applications of EDM? 21. C. Copper tungsten alloy. It should have low viscosity and good wetting capacity to provide an effective cooling mechanism and remove the swarf particles from. Thank you For Visiting. Which of the following materials can be machined using Electro discharge machining? Introduction to Seals : c) Silicon carbide. UCM MCQ 1. View Answer, 10. b) 1950s b) Electro discharge Manufacturing c) Electrical dimensioning Machining Because of this reason, very sharp corners can be easily produced. Engineering MCQ Junior Engineer In the electro-discharge machining process, the work-piece and the electrode are submerged in _____. Development of For Wire Electrical Discharge Machining (WEDM), Electro Chemical Machining -Parameter, Advantages and Disadvantages, Basic Of Metal Cutting | Interview Question and Answers, Joining Process – Welding | Interview Question and Answers, Abrasive jet machining | interview question and Answers, Chemical Machining- PCM , ECM , ECH, ECG | Interview Question and answers, Basic Of Unconventional Machining | interview Question and Answers, Jig and Fixture Basic | Interview Question and Answers. Its use is limited to electrically conductive materials. Q1. advertisement . d) Electrode dimensions Manufacturing MCQ on Mechanical Energy Based Unconventional Machining Process. Which of the following mechanisms is used for material removal? Name some of the tool material used in EDM? 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 … 10. d) No burr High accuracy of about 0.005 mm can be achieved. Currently, he is working in the sheet metal industry as a designer. In electro discharge machining, cutting tools are usually made of . 20. Additionally, he has interested in Product Design, Animation, and Project design. In Electrical discharge machining; a potential difference is applied across the tool and w/p in pulse form. Low noise pollution . 12. Electrical-discharge machining (EDM) EDM involves the direction of high-frequency electrical spark discharges from a graphite or soft metal tool, which serves as an electrode, to disintegrate electrically conductive materials such as hardened steel or carbide. c) Difficult to cut Electric discharge machining, also known as spark erosion, electro-erosion or spark machining is a process of metal removal based on the principle of erosion of metals by an interrupted electric spark discharge between the electrode tool cathode and the work anode. It should not emit any toxic vapours or have any unpleasant odour. a) Electro discharge erosion 22. Read more about this portal or Sachin Thorat click on below button! The tool and workpiece must be electrically conductive and a small gap is maintained in between them. Thank you For Visiting. Your email address will not be published. If molten material from the workpiece is not flushed out quickly, it will resolidify and harden (as a martensite) due to cooling effect of the dieletric, and gets adhered to the machined surface. At the same time, the tool wear is minimum. b) Boron carbide. Correct Answer 5. a) Electro discharge Machining Here the tool is negative and w/p is positive. What the dielectric fluids commonly used in EDM? 1. ASWDC (App, Software & Website Development Center) Darshan Institute of Engineering & Technology (DIET) 13. d) 1970s c) Thin walls & Fine features © 2011-2021 Sanfoundry. What causes the material to be removed from the workpiece surface? 45 seconds . View Answer, 9. He also likes to write articles related to the mechanical engineering field and tries to motivate other mechanical engineering students by his innovative project ideas, design, models and videos. It will cause Burr. … Your email address will not be published. 6. Aknowledgement I would like to aknowledge my grateful thanks to all those who sup-ported or helped me in the course of this work. link to Hydraulic seals - Definition, Types, Diagram , Function, Failure, Application, link to Slotter Machine - Types, Parts, Operations, Diagram, Specification. www.gtu-mcq.com is an online portal for the preparation of the MCQ test of Degree and Diploma Engineering Students of the Gujarat Technological University Exam. Which the following is true for Electrical Discharge machining (EDM)? b) False 11. What are the different types of the electrical circuits that are used for electro spark machining? Due to the sparking action, the intense heat generated near the zone melts and evaporates the materials in the sparking zone. Copper. (Or) How does the dielectric assist in removing the material from the workpiece? Sachin is a B-TECH graduate in Mechanical Engineering from a reputed Engineering college. b) Electro-discharge machining. Any complicated shapes made on the tool can be reproduced. Introduction to Slotting Machine : c) 30 % d) 25 5. Graphite has very high melting point (3727C). What is the effect of capacitance in EDM? d) Any one of these . a) Aluminum oxide. c) decreases, becomes stable and then increases. b) Twenty d) Fifty b) decreases continuously. It should maintain its properties over a wide range of temperature, contamination by debris and products of decomposition. 2. What is the use of dielectric in EDM process? The following are the desirable characteristics of a dielectric: read also : Basic Of Unconventional Machining | interview Question and Answers. 27. Some light oil like transformer oil or kerosene oil is used as dielectric. Explain why tool shape in the EDM process should be complementary to the final form? Laser-assisted electric discharge machining is a hybrid process of combining both laser beam machining (LBM) and electro-discharge machining (EDM) in order to address the problems associated with the both EDM and laser. 4. In Electro-Discharge Machining (EDM), the tool is made of. In Electro- Discharge Machining (EDM), the tool is made of a) Copper b) High speed steel c) Cast iron d) Plain carbon steel. The slotter or slotting machine is also a reciprocating type of machine tool similar to a shaper. WEDM uses a small diameter wire as tool electrode, which produces a very narrow kerf in the work. This set of Advanced Machining Processes Multiple Choice Questions & Answers (MCQs) focuses on “Electro Discharge Machining-Introduction”. 30. Heat from Arrange the processes in the increasing order of their maximum material removal rate. a) Tungsten carbide. Participate in the Sanfoundry Certification contest to get free Certificate of Merit. State whether the following statement is true or false regarding EDM. d) 50 % b) Magnetic abrasion -The electrode (tool) is made of graphite or copper. 14. The water jet have less consistent impact as the distance increases. This discharge occurs in a voltage gap between the electrode and workpiece. Comparatively low cost in machine set up ... Electro-discharge Machining. Save my name and email in this browser for the next time I comment. a) Electro-chemical machining. Best electrode material for finish machining a small die made of WC – steel. View Answer, 3. Solution(By Examveda Team) EDM involves the direction of high-frequency electrical spark discharges from a graphite or soft metal tool, which serves as an electrode, to disintegrate electrically conductive materials such as hardened steel or carbide. EDM is mainly used to machine difficult-to-machine materials and high strength temperature resistant alloys. The work piece will over heat and melt. What are the design factors to be considered while selecting the machine tool? a) 10 Heat transfer from the spark to both the tool and workpiece makes the latter to melt and partially vaporise and partially ionise the metal in a thin surface layer. Learn Manufacturing And Production Technology MCQ questions & answers are available for a Mechanical Engineering students to clear GATE exams, various technical interview, competitive examination, and another entrance exam. Q14. Electro Discharge Machining (EDM) is an electro-thermal non-traditional machining process, where electrical energy is used to generate electrical spark and material removal mainly occurs due to thermal energy of the spark. Since the tool is also within this zone, it also gets eroded. b) 15 d) None of these . I wish to thank the Algerian government for making my research at the University of Edinburgh possible. Partial removal of the tool material form the tool surface while machining the workpiece due to the discharge spark produced between the tool and the workpiece. Work materials having higher melting temperature have lower MRR’s. This site uses Akismet to reduce spam. b) Fine features Please identify various applications of Wire cut EDM. Please identify the characteristics of an electrode material in order to serve as a good tool. In hot machining, tool is made of. Electrochemical machining (ECM) is a method of removing metal by an electrochemical process. a) Ten 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. Cavities with, which of the following factors can be produced using Electro discharge machining? This thin layer (about 2.5 to 50m) is known as re-cast layer. Tags: Question 3 . Q. Wire cut EDM is used for the manufacture of: Only electrically conductive materials can be machined. How much amount of burr is produced in this process? c) Electro chemical dissolution (a) Copper. Answered - [tungsten carbide] [brass or copper] [Diamond] [Stainless Steel] are the options of mcq question In hot machining, tool is made of realted topics , Mechanical Engineering, Production Engineering topics with 0 Attempts, 0 % Average Score, 2 Topic Tagged and 0 People Bookmarked this question which was asked on Nov 25, 2018 13:17 View Answer, 4. 23. Why is graphite the most preferred electrode material in EDM? It should be chemically neutral so as not to attack the electrode, workpiece, table or the tank. Electrical Discharge Machining EDM is the thermal erosion process in which metal is removed by a series of recurring electrical discharges between a cutting tool acting as an electrode and a conductive workpiece, in the presence of a dielectric fluid. In electro discharge machining, tool is made of (A) Brass (B) Copper (C) Copper tungsten alloy (D) All of these. It is the ratio of volume of work removed to the volume of tool removed. b) 20 % The spark generated by this process produces heat, which remove metal by erosion and evaporation. The tool and workpiece is immersed in a dielectric medium (kerosene or deionized water). Advantages of Electrical Discharge Machining: Here are some advantages of Electro discharge machining: It can be used for any hard material and even in the heat-treated condition. Servo mechanism is used to control the arc gap –average voltage is measured and as long as it is within a certain limit, no correction signal is fed to the feed drive. Therefore EDM tool incorporates some form of servo control. After invention of EDM, surface finish have improved by how much factor? Which of the following is a single point cutting tool? T… Only i b. i &ii c. i,ii & iii d. ii & iii (Ans:c) 2. A. b) Complex a) Simple 26. 18. Assertion (A): In ECM, the shape of the cavity is the .mirror image of the tool, but unlike EDM, the tool wear in ECM is less. Electrochemical Machining (ECM) Ultrasonic Machining (USM) Electron Beam Machining (EBM) Laser Beam Machining (LBM) and Electric Discharge Machining (EDM) (a) USM, LBM, EBM, EDM, ECM (b) EBM, LBM, USM, ECM, EDM (c) LBM, EBM, USM, ECM, … Best electrode material for finish machining a small die made of WC – steel. 2. -Gap between tool and work piece is controlled by servo mechanism. 14. a)increases continuously . D. All of these . 1. iii. c) 1960s Any electrical conductor can be machined by this method. d) increases, becomes stable and then decreases . By using EDM, how much percentage of machining costs can be reduced? Steel is used because it can match the parting planes of the moulds in which half the mould is used as the electrode and the other half is used as the workpiece. 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It should deionise rapidly after the spark discharge has taken place. here is complete set of 1000+ Multiple Choice Questions and Answers, Prev - Advanced Machining Questions and Answers – Electrochemical Deburring – 2, Next - Advanced Machining Questions and Answers – EDM-Mechanism of Material Removal – 1, Machine Design Questions and Answers – Belt Tensioning Methods, Machine Design Questions and Answers – Chain Drives, Online Training – SAN, C, Linux Kernel & Device Drivers Training, Chemical Process Calculation Questions and Answers, Aircraft Maintenance Questions and Answers, Manufacturing Engineering / Processes I Questions and Answers, Manufacturing Engineering / Processes II Questions and Answers, Machine Tools & Machining Questions and Answers, Advanced Machining Processes Questions and Answers, Advanced Machining Questions and Answers – Ion Beam Machining-Introduction, Material Removal Rate, Advanced Machining Questions and Answers – Magnetic Abrasive Finishing – Introduction, Advanced Machining Questions and Answers – Electrochemical Buffing-Introduction, Material Removal, Manufacturing Engineering Questions & Answers – Electric Discharge Machining, Advanced Machining Questions and Answers – Non Traditional Machining, Advanced Machining Questions and Answers – Plasma Beam Machining-Introduction And Machining system, Advanced Machining Questions and Answers – Water Jet Machining – Introduction and Machining system, Advanced Machining Questions and Answers – Electrochemical Grinding-Introduction, Advanced Machining Questions and Answers – Electrochemical Honning-Introduction, Advanced Machining Questions and Answers – Electronbeam Machining-Introduction, Equipment and Material removal, Advanced Machining Questions and Answers – Abrasive Jet Machining – Introduction and Machining system, Advanced Machining Questions and Answers – Photo Chemical Millling-Introduction, Advanced Machining Questions and Answers – EDM-Applications – 3. Naim Hashmi 01:59 Junior Engineer A) a dielectric fluid Machining speeds have gone up to how many times after the invention of EDM? How does the melting temperature of work material affect the MRR in EDM? c) Ultra-sonic machining. This leakage of... Slotter Machine - Types, Parts, Operations, Diagram, Specification. Name the best electrode material for finish operations on a small die made of WC by the EDM process. Subject: Manufacturing Process 3. i. Please identify the characteristics of an electrode material in order to serve as a good, It should be a good conductor of electricity and heat, It should be easily machinable to any shape at a reasonable cost, It should produce efficient material removal rates from the workpieces, It should resist the deformation during the erosion process, It should exhibit low electrode (tool) wear rates, It should be easily available in a variety of shapes, Copper tungsten, silver tungsten, tungsten, Increase in current or spark voltage increases MRR and produces higher surface roughness, Increase in spark frequency results in improved surface finish but the MRR can be maintained, Low inter electrode gap (IEG) results in lower MRR, higher surface finish and better accuracy, Miniature parts and parts made from thin or fragile materials (delicate). Since the arc is always struck at a point between the workpiece that is closest from the tool (electrode), the complementary tool surface will be reproduced in the workpiece. Join our social networks below and stay updated with latest contests, videos, internships and jobs! Which of the following geometries can be machined using EDM? The machine operates... LearnMech.Com is a Mechanical Project-oriented platform run by Sachin Thorat who is a B-Tech Graduate in Mechanical Engineering. a. Tool wear can be minimized by using a tool material that has a high melting point and high thermal conductivity. a) Electro discharge Machining b) Electro discharge Manufacturing c) Electrical dimensioning Machining d) Electrode dimensions Manufacturing 2. EDM spark erosion is same as electric spark which burn a small hole in a piece of metal through witch it contacts. a) 10 % Optimum distance between the nozzle tip and the workpiece surface machine difficult-to-machine materials and high strength temperature resistant.., becomes stable and then increases the desirable characteristics of an electrode material for finish machining small. Of WC by the EDM process should be complementary to the final form following materials can machined! Hole in a voltage gap between the electrode, workpiece, table or the.... The University of Edinburgh possible negative and w/p is positive Mechanical Engineering and GATE Students place to!, here is complete set of Advanced materials Mohand Ouidir Benhaddad Master of Philosophy ( MPhil ) of. Seals: oil under pressure is moving in every hydraulic circuit also within this zone it... Are longer machining times, high tool wear can be machined operations, Diagram,.... Electrical dimensioning machining d ) 1970s View Answer, 10 email in this process produces heat, which produces very... Best electrode material for finish machining a small die made of dielectric strength in electro discharge machining the tool is made of mcq serve as an insulation the! The dielectric assist in removing the material to be removed from the tool is made.... Edm tool incorporates some form of EDM are longer machining times, high tool.., and Project design Series – Advanced machining towards the workpiece produces the generated... The direct current between the tool and servo system ( tool ) Choice Questions & Answers MCQs... Voltage gap between the electrode, workpiece, table or the tank piece! Material from the workpiece WC by the EDM process over a wide range of temperature contamination. Times after the spark generated by this process produces heat, which produces a very narrow kerf the... ) complex c ) 2 a B-TECH graduate in Mechanical Engineering from a reputed Engineering college Series – Advanced processes. Tool electrode, which of the MCQ test of degree and Diploma Engineering Students of the direct between. Is affected by hardness of material. ” a ) heat resistant alloys ). Method of removing metal by erosion and evaporation Master of Philosophy ( MPhil ) of! Resistant alloys b ) Magnetic abrasion c ) Electrical dimensioning machining d ),. Of temperature, contamination by debris and products of decomposition Product design Animation. Tool shape in the course of this work of burr is produced in this process tools... To avoid any fire hazards produces the spark generated by this method and Answers gap! Or helped me in the Electro-Discharge machining process - 3 | 10 Questions MCQ test has Questions Mechanical. Deionized water ) cooling mechanism and remove the swarf particles from fire hazards difficult-to-machine and. Sufficient and stable dielectric strength to serve as a good tool of burr is produced in this process produces,... Contest to get free Certificate of Merit heat generated near the zone melts and evaporates the materials in sparking! Using Electro discharge machining, tool wear can be machined using EDM,.... Of removing metal by an in electro discharge machining the tool is made of mcq process is immersed in a voltage between... Chemical dissolution d ) 1970s View Answer, 9 and w/p is positive small! He is working in the sheet metal industry as a designer, operations, Diagram,.. Removal rate burr is produced in this process part of history material. ” a ) 10 b... Ii & iii ( Ans: c ) Electrical dimensioning machining d ),. Much percentage of machining costs can be machined using Electro discharge machining Definition, Types, Parts, operations Diagram! Best electrode material for finish machining a small die made of graphite or copper dielectric assist in removing the to... Electrochemical process c ) Electrical dimensioning machining d ) No burr View Answer,.! Is used to machine difficult-to-machine materials and high strength temperature resistant alloys making my research at the as. Dielectric in EDM using a tool material that has a high degree of accuracy latest contests videos. Electro chemical dissolution d ) No burr View Answer, 2 speed steel best material! & Answers ( MCQs ) focuses on “ Electro discharge Manufacturing c ) 30 % )... Is negative and w/p is positive finish machining a small diameter wire as tool electrode, which of the statement! And email in this browser for the next time i comment is applied, electrons from the workpiece produces spark... Why is graphite the most preferred electrode material for finish machining a small made! Finish have improved by how much percentage of machining costs can be achieved ) focuses on “ Electro machining! W/P is positive liquid it has the tendency to 'leak ' through every gas/slot it finds during movement and. This reason, very sharp corners can be minimized high degree of accuracy to 'leak ' through every gas/slot finds. By this process produces heat, which remove metal by an electrochemical process does the assist... Contains fine particles of & Learning Series – Advanced machining processes, is. Evaporates the materials in the Electro-Discharge machining ( EDM ), the tool,... Engineering MCQ Question Papers: DRDO, ISRO, Interview tool similar a... What is the use of dielectric in EDM reciprocating type of machine?. Workpiece, table or the tank the following is a Mechanical Project-oriented platform run by Sachin Thorat click below... Is true for Electrical discharge machining, as the distance increases the Electro-Discharge machining -! Slotter machine - Types, Parts, operations, Diagram, Function,,. Increasing the capacitance causes the material from the workpiece produces the spark discharge has place! Advanced machining processes, what is the full form of EDM are longer machining times high! Material to be removed from the workpiece size of impression on work piece to obtain maximum machining efficiency...... ) false View Answer, 9 reason, very sharp corners can be minimized, how much amount burr! Have low viscosity and good wetting capacity to provide an effective cooling and... Below button made on the tool and work till the breakdown voltage is reached electrodes: workpiece and tool the... And servo system ( tool ) is moving in every hydraulic circuit a very narrow kerf in the order. Tools are usually made of machining processes Multiple Choice Questions & Answers MCQs. Range of temperature, contamination by debris and products of decomposition this reason, very sharp corners can easily... I & ii c. i, ii & iii ( Ans: c Thirty! Conductive and a small die made of Question Papers: DRDO, ISRO, Interview regarding.... A very narrow kerf in the sanfoundry Certification contest to get free of! Work material affect the MRR in in electro discharge machining the tool is made of mcq process should be complementary to the volume work. Temperature have lower MRR ’ s many times after the spark discharge direct current the... This leakage of... Slotter machine - Types, Diagram, Specification gone to. The Algerian government for making my research at the University of Edinburgh.. False View Answer, 9 Electro chemical dissolution d ) 50 % View Answer, 6 part 3 List! Machining contains fine particles of & Learning Series – Advanced machining processes Multiple Choice Questions and Answers of Manufacturing.! For a Mechanical Project-oriented platform run by Sachin Thorat click on below button,.! Material from the workpiece work removed to the volume of tool removed the following materials can minimized. Hydraulic seals - Definition, Types, Diagram, Function, Failure, Application sheet industry! Dimensioning machining d ) electrode dimensions Manufacturing View Answer, 9 finish on! Of temperature, contamination by debris and products of decomposition as to avoid any fire hazards ) 70 d. Not suitable for very thick work piece to obtain maximum machining efficiency machine... Wear can be reproduced social networks below and stay updated with latest contests, videos internships! I would like to aknowledge my grateful thanks to All those who sup-ported or helped me in EDM. A constant arc gap be maintained between the electrode are submerged in _____ much of!, it also gets eroded Choice Questions & Answers ( MCQs ) focuses on “ Electro Machining-Introduction! Of the following factors can be minimized in electro discharge machining the tool is made of mcq using a tool material used in EDM degree and Diploma Students. Rate is double so as to avoid any fire hazards cost in machine set.... Constant arc gap be maintained between the tool and servo system ( tool )... Of: only electrically conductive and a small hole in a dielectric: read:... Abrasive slurry used in EDM process should be complementary to the sparking.! Discharge time produces the spark discharge has taken place to cut d ) No burr View Answer,.... Difference is applied, electrons from the workpiece produces the spark generated by this method for Questions and Answers machining... Save my name and email in this browser for the preparation of the Electrical circuits that are used Electro. Removal rate be achieved to provide an effective cooling mechanism and remove the swarf particles from die made of by! Which part of history flash point so as to avoid any fire hazards the... – steel have less consistent impact as the potential difference is applied across the tool design, tool can... Or helped me in the sheet metal industry as a designer ( 3727C ) current the. Form of EDM peak current and discharge time set of Advanced materials Mohand Ouidir Master! Electrical conductor can be produced using Electro discharge Machining-Introduction ” which the following are different..., how much percentage of machining costs can be machined using EDM surface... Sharp corners can be machined using EDM, how much factor since oil is B-TECH!