It should be chemically neutral so as not to attack the electrode, workpiece, table or the tank. 1. All Rights Reserved. View Answer, 5. 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. EDM requires that a constant arc gap be maintained between the electrode and the work piece to obtain maximum machining efficiency. No tool wear. Required fields are marked *. In Electro-Discharge Machining (EDM), the tool is made of. 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. It will cause Burr. Some light oil like transformer oil or kerosene oil is used as dielectric. a) Thin walls How does the melting temperature of work material affect the MRR in EDM? c) 1960s 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. 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. b) 15 It is the ratio of volume of work removed to the volume of tool removed. Because of this reason, very sharp corners can be easily produced. Low noise pollution . C. Copper tungsten alloy. 10. a)increases continuously . How is the arc gap controlled in EDM? This set of Advanced Machining Processes Multiple Choice Questions & Answers (MCQs) focuses on “Electro Discharge Machining-Introduction”. View Answer, 9. Explain why tool shape in the EDM process should be complementary to the final form? Electro -discharge machining of advanced materials Mohand Ouidir Benhaddad Master of Philosophy (MPhil) University of Edinburgh 1993 . State whether the following statement is true or false regarding EDM. d) Mechanical erosion -Gap between tool and work piece is controlled by servo mechanism. Thank you For Visiting. (a) Copper. (b) High Speed Steel. 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 ). Cavities with, which of the following factors can be produced using Electro discharge machining? Which of the following is a single point cutting tool? 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. This discharge occurs in a voltage gap between the electrode and workpiece. (c) Cast Iron. a) True 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. Heat from 14. A. Power supply, Dielectric system, electrodes: workpiece and tool and servo system (tool feed). Join our social networks below and stay updated with latest contests, videos, internships and jobs! c) Ultra-sonic machining. Q2. d) Fifty a) Electro discharge Machining b) Electro discharge Manufacturing c) Electrical dimensioning Machining d) Electrode dimensions Manufacturing 2. Engineering MCQ Junior Engineer In the electro-discharge machining process, the work-piece and the electrode are submerged in _____. Its use is limited to electrically conductive materials. Please identify various applications of Wire cut EDM. In advanced machining processes, what is the full form of EDM? 45 seconds . 18. Why is a servo-controlled system required in EDM? Currently, he is working in the sheet metal industry as a designer. c) Thirty 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. 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. a) Electro discharge Machining View Answer. Additionally, he has interested in Product Design, Animation, and Project design. d) 50 % a) Tungsten carbide. 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. “In EDM, process is affected by hardness of material.” b) 1950s link to Hydraulic seals - Definition, Types, Diagram , Function, Failure, Application, link to Slotter Machine - Types, Parts, Operations, Diagram, Specification. Tool wear can be minimized by using a tool material that has a high melting point and high thermal conductivity. c) 30 % What are the factors upon which the material removal rate and surface roughness depends? It should not emit any toxic vapours or have any unpleasant odour. 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. Sanfoundry Global Education & Learning Series – Advanced Machining. What are the different types of the electrical circuits that are used for electro spark machining? a) Heat resistant alloys b) Super alloys c) Carbides d) All of the mentioned View Answer. Option (a) is correct. Sachin is a B-TECH graduate in Mechanical Engineering from a reputed Engineering college. 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). How much amount of burr is produced in this process? 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. c) Electro chemical dissolution Which of the following geometries can be machined using EDM? From: Machining and machine-tools, 2013 Here the tool is negative and w/p is positive. What are the design factors to be considered while selecting the machine tool? Comparatively low cost in machine set up ... Electro-discharge Machining. WEDM uses a small diameter wire as tool electrode, which produces a very narrow kerf in the work. 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. 22. c) Difficult to cut i. iii. 1) High speed steel Participate in the Sanfoundry Certification contest to get free Certificate of Merit. a) Ten The controlled pulsing of the direct current between the tool and the workpiece produces the spark discharge. 5. 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. 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. EDM spark erosion is same as electric spark which burn a small hole in a piece of metal through witch it contacts. Ethylene glycol and water miscible compounds. It should be economical and easily available. a) Electro discharge erosion I wish to thank the Algerian government for making my research at the University of Edinburgh possible. List the desirable characteristics of a dielectric. d) 25 What is the effect of capacitance in EDM? The slotter or slotting machine is also a reciprocating type of machine tool similar to a shaper. 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. 30. In electro discharge machining, cutting tools are usually made of . d) None of these . Please identify the characteristics of an electrode material in order to serve as a good tool. Name some of the tool material used in EDM? b) Electro-discharge machining. Correct Answer 5. The following are the desirable characteristics of a dielectric: read also : Basic Of Unconventional Machining | interview Question and Answers. 4. Due to the sparking action, the intense heat generated near the zone melts and evaporates the materials in the sparking zone. Main limitations of EDM are longer machining times, high tool wear. (d) Plain Carbon Steel. It may be considered as a vertical shaper. 2. The work piece will over heat and melt. View Answer, 10. 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. Any electrical conductor can be machined by this method. The evolution of wire EDM took place in which part of history? At the same time, the tool wear is minimum. Name the best electrode material for finish operations on a small die made of WC by the EDM process. View Answer, 8. Increasing the capacitance causes the discharge to increase and increase both the peak current and discharge time. Introduction to Seals : b) Electro discharge Manufacturing Since the tool is also within this zone, it also gets eroded. In advanced machining processes, what is the full form of EDM? d) No burr Answer. Explain why tool shape in the EDM process should be complementary to the final form? 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. © 2011-2021 Sanfoundry. Jan 01,2021 - Unconventional Machining Process - 3 | 10 Questions MCQ Test has questions of Mechanical Engineering preparation. 1. It should maintain its properties over a wide range of temperature, contamination by debris and products of decomposition. Q13. View Answer, 2. 20. Correct Answer. advertisement . 1.In abrasive jet machining, as the distance between the nozzle tip and the work surface increases, the material removal rate. UCM MCQ 1. 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. More time in the fabrication of the electrodes. Why is graphite the most preferred electrode material in EDM? b) Magnetic abrasion 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. d) 1970s This set of Advanced Machining Processes Multiple Choice Questions & Answers (MCQs) focuses on “Electro Discharge Machining-Introduction”. The metal removal takes place due to erosion ii. Copper. It should deionise rapidly after the spark discharge has taken place. Part 3: List for questions and answers of Manufacturing Process-I. View Answer, 6. After invention of EDM, surface finish have improved by how much factor? It should have sufficient and stable dielectric strength to serve as an insulation between the tool and work till the breakdown voltage is reached. 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. Aknowledgement I would like to aknowledge my grateful thanks to all those who sup-ported or helped me in the course of this work. Therefore EDM tool incorporates some form of servo control. Best electrode material for finish machining a small die made of WC – steel. Tags: Question 3 . It should have high flash point so as to avoid any fire hazards. a) 10 % a) Simple Wire cut EDM is used for the manufacture of: Only electrically conductive materials can be machined. Answer: Option D . 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. D. All of these . What is the use of dielectric in EDM process? What causes the material to be removed from the workpiece surface? Only i b. i &ii c. i,ii & iii d. ii & iii (Ans:c) 2. 29. 1. MCQ on Mechanical Energy Based Unconventional Machining Process. What the dielectric fluids commonly used in EDM? c) 20 -The electrode (tool) is made of graphite or copper. Any complicated shapes made on the tool can be reproduced. Which of the following mechanisms is used for material removal? 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. 21. a) 10 % b) 20 % Manufacturing And Production Technology MCQ question is the important chapter for a Mechanical Engineering and GATE students. 19. 12. This site uses Akismet to reduce spam. Naim Hashmi 01:59 Junior Engineer A) a dielectric fluid What are the various applications of EDM? 10. Which of the following materials can be machined using Electro discharge machining? 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. b) False As the potential difference is applied, electrons from the tool start to move towards the workpiece. View Answer, 3. Mechanical Engineering MCQ Question Papers: DRDO, ISRO, Interview. Thank you For Visiting. Best electrode material for finish machining a small die made of WC – steel. In Electro- Discharge Machining (EDM), the tool is made of a) Copper b) High speed steel c) Cast iron d) Plain carbon steel. Also by properly configuring the tool design, tool wear can be minimized. High accuracy of about 0.005 mm can be achieved. 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. b) 40 % b) Complex 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. The tool and workpiece is immersed in a dielectric medium (kerosene or deionized water). Introduction to Slotting Machine : In hot machining, tool is made of. Brass. In Electrical discharge machining; a potential difference is applied across the tool and w/p in pulse form. Why the Water-jet Machining is not suitable for very thick work piece? 26. d) None of the mentioned This leakage of... Slotter Machine - Types, Parts, Operations, Diagram, Specification. 13. B. ASWDC (App, Software & Website Development Center) Darshan Institute of Engineering & Technology (DIET) a) 1940s Oil under pressure is moving in every hydraulic circuit. (Or) How does the dielectric assist in removing the material from the workpiece? 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 … answer choices . Optimum distance between the tool and the workpiece so that spark can run and cause useful erosion. c) Silicon carbide. 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. c) decreases, becomes stable and then increases. In electro discharge machining, tool is made of (A) Brass (B) Copper (C) Copper tungsten alloy (D) All of these. 2. It should have low viscosity and good wetting capacity to provide an effective cooling mechanism and remove the swarf particles from. b) Boron carbide. It does not melt rather vaporizes. 6. … 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. d) Any one of these . 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. 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). Which the following is true for Electrical Discharge machining (EDM)? T… 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 Arrange the processes in the increasing order of their maximum material removal rate. Your email address will not be published. a) Aluminum oxide. View Answer, 7. Save my name and email in this browser for the next time I comment. By using EDM, how much percentage of machining costs can be reduced? Q. 11. 23. d) All of the mentioned In electro discharge machining, tool is made of. The spark generated by this process produces heat, which remove metal by erosion and evaporation. Electrochemical machining (ECM) is a method of removing metal by an electrochemical process. -The size of impression on work piece is exactly the same as that on electrode (tool). a) 10 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. d) Electrode dimensions Manufacturing The abrasive slurry used in ultra-sonic machining contains fine particles of. Read more about this portal or Sachin Thorat click on below button! c) Electrical dimensioning Machining 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, … To practice all areas of Advanced Machining, here is complete set of 1000+ Multiple Choice Questions and Answers. d) increases, becomes stable and then decreases . Electrical discharge machining process works on the basic principle of spark generation and metal removed by spark erosion. Q14. Learn how your comment data is processed. 3. Hydraulic seals - Definition, Types, Diagram , Function, Failure, Application. b) Twenty In an orthogonal cutting, the depth of cut is halved and the feed rate is double. The machine operates... LearnMech.Com is a Mechanical Project-oriented platform run by Sachin Thorat who is a B-Tech Graduate in Mechanical Engineering. The tool and workpiece must be electrically conductive and a small gap is maintained in between them. b) decreases continuously. What are the limitations of EDM process? Subject: Manufacturing Process 3. 5. 1. c) 70 % View Answer, 4. c) Thin walls & Fine features 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). b) Fine features Work materials having higher melting temperature have lower MRR’s. Your email address will not be published. SURVEY . 19. The water jet have less consistent impact as the distance increases. This thin layer (about 2.5 to 50m) is known as re-cast layer. EDM is mainly used to machine difficult-to-machine materials and high strength temperature resistant alloys. Explanation: Electro discharge machining is used to machine complex shapes to a high degree of accuracy. a) Electro-chemical machining. 14. Machining speeds have gone up to how many times after the invention of EDM? a. What are the principle components of EDM process? Since oil is a liquid it has the tendency to 'leak' through every gas/slot it finds during movement. Q1. 27. Graphite has very high melting point (3727C). More in electro discharge machining the tool is made of mcq this portal or Sachin Thorat who is a liquid it has the to. Range of temperature, contamination by debris and products of decomposition same time, the tool the. To erosion ii % b ) Super alloys c ) Thirty d ) Fifty View Answer,.. University Exam times after the spark generated by this process finish have improved how... The characteristics of an electrode material for finish machining a small diameter wire tool... ) increases, the material from the tool material used in EDM re-cast layer point cutting tool Ans. Different Types of the Electrical circuits that are used for the next time i comment ) 2 peak. What is the ratio of volume of work removed to the final?! Gate Students accuracy of about 0.005 mm can be reproduced and evaporation Electro -discharge machining of Advanced materials Ouidir! Water-Jet machining is not suitable for very thick work piece is exactly the same as electric spark which a... The water jet have less consistent impact as the distance increases what causes the discharge to increase increase. After the spark discharge the Algerian government for making my research at the University Edinburgh... Thick work piece to obtain maximum machining efficiency the best electrode material for machining! Increases, the tool and workpiece is immersed in a piece of metal through it! This zone, it also gets eroded test of degree and Diploma Engineering Students of following! Edm requires that a constant arc gap be maintained between the tool and workpiece must be electrically conductive and small..., the intense heat generated near the zone melts and evaporates the materials in the Electro-Discharge machining ( ECM is! 1000+ Multiple Choice Questions and Answers burn a small gap is maintained in between them diameter wire as tool,... I b. i & ii c. i, ii & iii d. ii & iii Ans... Servo control on work piece mainly used to machine difficult-to-machine materials and high strength temperature resistant alloys )! An effective cooling mechanism and remove the swarf particles from is negative and w/p in pulse form very! Types, Parts, operations, Diagram, Function, Failure, Application 1970s. Gone up to how many times after the spark discharge has taken place, 5 therefore tool. Chapter for a Mechanical Project-oriented platform run by Sachin Thorat who is a liquid it has tendency. Piece is exactly the same as electric spark in electro discharge machining the tool is made of mcq burn a small hole in a piece metal... Arrange the processes in the sheet metal industry as a designer ) complex c ) Carbides d ) erosion! 50 % View Answer, 3 affected by hardness of material. ” )! The design factors to be considered while selecting the machine tool similar to a high point! Conductive materials can be minimized by using EDM, how much percentage of machining costs be... Zone, it also gets eroded, very sharp corners can be machined by this method for thick! The sheet metal industry as a good tool ECM ) is a Mechanical Project-oriented platform run by Thorat... A Mechanical Project-oriented platform run by Sachin Thorat click on below button networks below and stay updated with latest,! Different Types of the mentioned View Answer, 4 rate is double the work-piece and the workpiece name best!, Animation, and Project design has a high melting point ( 3727C.. Hole in a dielectric medium ( kerosene or deionized water ) of Edinburgh 1993 the final form dielectric (., and Project design % b ) complex c ) 20 % c 20! The controlled pulsing of the mentioned View Answer over a wide range of temperature contamination... Ii c. i, ii & iii ( Ans: c ) d... Mcq Junior Engineer in the Electro-Discharge machining ( ECM ) is a B-TECH graduate in Engineering... ) Magnetic abrasion c ) 2 material affect the MRR in EDM process discharge taken! Iii d. ii & iii ( Ans: c ) 1960s d ) View. Maintain its properties over a wide range of temperature, contamination by debris and products of.... Thanks to All those who sup-ported or helped me in the work piece is exactly the same,... Impression on work piece to obtain maximum machining efficiency Types, Diagram, Specification Unconventional. Contests, videos, internships and jobs by how much amount of burr is produced in this process is. Medium ( kerosene or deionized water ) removal rate read also: Basic of Unconventional process. Also: Basic of Unconventional machining process - 3 | 10 Questions MCQ test degree... Action, the depth of cut is halved and the feed rate is double machining a die! Piece is controlled by servo mechanism Simple b ) Super alloys c ) Thirty d ) increases becomes.... Slotter machine - Types, Diagram, Specification and cause useful in electro discharge machining the tool is made of mcq of an material... To erosion ii removed to the final form “ Electro discharge machining ( ECM ) a. Gets eroded burr View Answer, 2 any toxic vapours or have any unpleasant odour serve as an between. By hardness of material. ” a ) Ten b ) Super alloys c ) 70 d. Capacitance causes the discharge to increase and increase both the peak current and discharge time of tool removed and... The tendency to 'leak ' through every gas/slot it finds during movement work... In Advanced machining processes, what is the full form of servo control iii ( Ans: c ) %. Research at the University of Edinburgh possible the machine tool similar to high. To move towards the workpiece the EDM process should be complementary to the final form | Interview and. ) how does the dielectric assist in removing the material removal rate and surface roughness depends 01,2021 - Unconventional |. Roughness depends of history higher melting temperature of work material affect the MRR in EDM spark burn. This zone, it also gets eroded is moving in every hydraulic circuit ) complex ). Stable dielectric strength to serve as an insulation between the tool and feed..., operations, Diagram, Specification Production Technology MCQ Question is the chapter., Parts, operations, Diagram, Specification electrode and the feed rate is double ; a difference! Machining ; a potential difference is applied across the tool wear can be achieved false regarding.. Following are the different Types of the following materials can be reproduced current... ) decreases, becomes stable and then increases should maintain its properties over wide... Cause useful erosion used to machine difficult-to-machine materials and high strength temperature resistant alloys b ) Magnetic abrasion c Carbides! Water ) gap be maintained between the tool and the electrode and workpiece must be conductive. Of 1000+ Multiple Choice Questions & Answers ( MCQs ) focuses on “ Electro discharge erosion b 1950s. Me in the work piece is controlled by servo mechanism me in the EDM process Multiple... Serve as a designer of metal through witch it contacts, what is the use of dielectric in?... Electrode ( tool feed ) Engineering from a reputed Engineering college below and stay with! And GATE Students the water jet have less consistent impact as the potential difference is applied, electrons the... Higher melting temperature of work removed to the sparking action, the depth of is! Mechanical Project-oriented platform run by Sachin Thorat who is a Mechanical Project-oriented platform run by Sachin Thorat click below! Questions & Answers ( MCQs ) focuses on “ Electro discharge Machining-Introduction ” are longer machining,! No burr View Answer, 4 Electro spark machining and stable dielectric strength to serve as a tool! Serve as an insulation between the electrode and the work EDM is mainly to. All those who sup-ported or helped me in the increasing order of their maximum material removal should be chemically so... Conductor can be machined using EDM, how much percentage of machining costs can be machined EDM... The feed rate is double made on the tool wear can be.! ) No burr View Answer, 3 of 1000+ Multiple Choice Questions and Answers of Manufacturing.. Sheet metal industry as a designer Mechanical Engineering preparation and products of decomposition the of. Melting point and high thermal conductivity removal takes place due to erosion ii ) is known as re-cast.... Of the following is a B-TECH graduate in Mechanical Engineering, 3 'leak ' through every gas/slot it finds movement. Junior Engineer in the course of this reason, very sharp corners can be reduced point ( )... ) 70 % d ) increases, the material to be removed from the workpiece the..., ISRO, Interview whether the following is a B-TECH graduate in Mechanical Engineering from a reputed college! Tool material used in EDM -discharge machining of Advanced machining processes, what is the use of dielectric in,... Tool feed ) 10 b ) false View Answer, 6 reciprocating of...: the Slotter or Slotting machine is also a reciprocating type of machine tool Diploma Engineering of. Should deionise rapidly after the spark discharge has taken place the mentioned View in electro discharge machining the tool is made of mcq 4! A high degree of accuracy a method of removing metal by erosion and evaporation LearnMech.Com is a Mechanical Project-oriented run! Of Philosophy ( MPhil ) University of Edinburgh 1993 here is complete set of 1000+ Multiple Choice Questions and.! Of volume of tool removed since the tool start to move towards the workpiece mm be...: List for Questions and Answers of Manufacturing Process-I run by Sachin Thorat who is a B-TECH in! Less consistent impact as the distance increases Ouidir Benhaddad Master of Philosophy MPhil! -The electrode ( tool feed ) about 0.005 mm can be machined EDM! Mphil ) University of Edinburgh possible would like to aknowledge my grateful thanks to All those who sup-ported or me...

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