309 + Interview Questions in Thermal Processes in Advanced Machining Page 1 InterviewSolution

1.	What is the value of beam diameter that is obtained in IBM?(a) 1 cm(b) 3 cm(c) 5 cm(d) 7 cmThis question was posed to me in exam.Origin of the question is Ion Beam Machining-Introduction, Material Removal Rate topic in portion Thermal Processes of Advanced Machining
Answer» The CORRECT answer is (c) 5 CM To elaborate: The VALUE of the beam diameter for MACHINING the WORK piece material in Ion beam machining is about 5 cm.

Discussion

2.	What are the values of tolerances obtained by using PBM?(a) ± 0.6 mm(b) ± 1.6 mm(c) ± 2.6 mm(d) ± 3.6 mmThe question was asked by my college director while I was bunking the class.I would like to ask this question from PBM topic in division Thermal Processes of Advanced Machining
Answer» Correct OPTION is (b) ± 1.6 mm To EXPLAIN I WOULD say: The values of the tolerances obtained by using Plasma beam machining will be about ± 1.6 mm.

Discussion

3.	The cut edge of the material tends to be __________ than the base metal in PBM.(a) Smoother(b) Harder(c) Same as(d) None of the mentionedThis question was posed to me in my homework.I need to ask this question from PBM in section Thermal Processes of Advanced Machining
Answer» The CORRECT ANSWER is (b) Harder To explain: The cut edge of MATERIAL in PBM TENDS to be harder than the BASE metal.

Discussion

4.	What is the maximum value of the thickness used in PBM process?(a) 100 mm(b) 200 mm(c) 300 mm(d) 400 mmI have been asked this question by my college director while I was bunking the class.I'd like to ask this question from Plasma Beam Machining-Introduction And Machining system topic in chapter Thermal Processes of Advanced Machining
Answer» Right choice is (b) 200 mm The BEST explanation: The maximum value of the THICKNESS used in the Plasma beam machining PROCESS is about 200 mm.

Discussion

5.	Which type of thin cast layer is produced when we use EBM?(a) Thin layer(b) Thick layer(c) No layer(d) All of the mentionedThe question was asked in exam.Query is from EBM-Applications, Advantages and Disadvantages topic in section Thermal Processes of Advanced Machining
Answer» The CORRECT CHOICE is (a) Thin layer To elaborate: Thin recast layer is produced in Electron beam MACHINING which an added disadvantage to the machining PROCESS.

Discussion

6.	Which of the following lenses are used for refocussing the electrons in EBM process?(a) Magnetic lens(b) Electronic lens(c) Magnetic & Electronic lens(d) None of the mentionedThis question was posed to me in a job interview.My question comes from Electronbeam Machining-Introduction, Equipment and Material removal topic in portion Thermal Processes of Advanced Machining
Answer» The correct CHOICE is (c) Magnetic & Electronic lens Easy explanation: Magnetic and electronic LENSES are USED to refocus the electrons in EBM PROCESS.

Discussion

7.	Which type of laser can be used for direct drilling or percussion?(a) Ruby laser(b) Nd-YAG laser(c) Ruby & Nd-YAG laser(d) None of the mentionedThe question was posed to me in an interview.This key question is from LBM-Applications in section Thermal Processes of Advanced Machining
Answer» The correct option is (c) RUBY & Nd-YAG laser The explanation is: Both Ruby and Nd-YAG laser can be USED for direct (PERCUSSION) DRILLING PURPOSE.

Discussion

8.	Material removal rates which are about mg/pulse produces which type of holes?(a) Shallow(b) Deep(c) Very deep(d) All of the mentionedThis question was addressed to me in an interview.My query is from LBM-Applications in division Thermal Processes of Advanced Machining
Answer» Right CHOICE is (a) Shallow The explanation: In LBM, MATERIAL removal at the rate of milligrams per PULSE produces shallow holes in the material.

Discussion

9.	Lasers of which type are used for modification of electronic components?(a) High power(b) Small spot size(c) Short pulse length(d) All of the mentionedI had been asked this question during an interview.I need to ask this question from LBM-Applications in section Thermal Processes of Advanced Machining
Answer» Right choice is (d) All of the mentioned For EXPLANATION I would say: Lasers of high power density, small spot SIZE and short PULSE length are USEFUL devices for modification of electronic COMPONENTS.

Discussion

10.	Which of the following are the process variables for texturing process in EDM?(a) Pulse current(b) Electrode polarity(c) Dielectric type(d) All of the mentionedI got this question during an internship interview.My question is from EDM-Applications in section Thermal Processes of Advanced Machining
Answer» The correct choice is (d) All of the mentioned For explanation: PULSE current, POLARITY, dielectric, electrode MATERIAL and roll ROTATION speed are some process VARIABLES of texturing.

Discussion

11.	State whether the following statement is true or false regarding the applications of EDM.(a) “In EDM, milling process can machine complex shapes with sharp corners.”(b) True(c) FalseI had been asked this question in an international level competition.This interesting question is from EDM-Applications topic in portion Thermal Processes of Advanced Machining
Answer» Right CHOICE is (b) True Easiest explanation: EDM MILLING has a main limitation i.e.., it cannot machine complex SHAPES with SHARP tools because of ROTATING tool.

Discussion

12.	Which type of cavities can be machined using milling process by Electro discharge machining?(a) Complex cavities(b) Simple cavities(c) Simple & Complex cavities(d) None of the mentionedI had been asked this question by my school principal while I was bunking the class.I need to ask this question from EDM-Applications topic in portion Thermal Processes of Advanced Machining
Answer» Right answer is (c) Simple & Complex CAVITIES To EXPLAIN: Simple cavities and complex cavities are machined by successive NC sweeps of ELECTRODE over the desired path.

Discussion

13.	What are range of diameter values obtained by drilling using EDM?(a) 0.01 to 0.05 mm(b) 0.1 to 0.5 mm(c) 1 to 5 mm(d) 10 to 15 mmI have been asked this question by my school principal while I was bunking the class.Enquiry is from EDM-Applications in portion Thermal Processes of Advanced Machining
Answer» CORRECT CHOICE is (b) 0.1 to 0.5 mm To explain I would say: Diameter values while drilled USING Electro DISCHARGE machining, ranges from 0.10 to 0.50 mm.

Discussion

14.	Which of the following can be used as dielectric fluids in EDM?(a) Kerosene(b) Silicon fluids(c) Distilled water(d) All of the mentionedI have been asked this question during an online interview.My question comes from EDM-Machining System in portion Thermal Processes of Advanced Machining
Answer» CORRECT answer is (d) All of the mentioned To explain: The dielectric FLUIDS used are KEROSENE, silicon fluid, ETHYLENE glycol, water in emulsions and distilled water.

Discussion

15.	Which of the following tungsten carbides are used as electrodes in EDM?(a) Silver tungsten(b) Copper tungsten(c) All of the mentioned(d) None of the mentionedThe question was posed to me in exam.Enquiry is from EDM-Machining System in chapter Thermal Processes of Advanced Machining
Answer» Correct option is (c) All of the mentioned To explain I WOULD say: Both SILVER tungsten and copper tungsten are the tungsten carbides USED in EDM.

Discussion

16.	State whether the following statement is true or false regarding EDM.(a) “In Electro discharge machining, electric pulses generated affect the material removal.”(b) True(c) FalseThis question was addressed to me in an interview for internship.Query is from EDM-Mechanism of Material Removal in section Thermal Processes of Advanced Machining
Answer» Correct answer is (a) “In Electro discharge MACHINING, ELECTRIC PULSES generated affect the material removal.” Explanation: In Electro discharge machining, electric pulses generated have an impact on the material removal.

Discussion

17.	Which of the following pulses contribute to the desired material removal in EDM?(a) Open circuit pulses(b) Short circuits(c) Arcs(d) SparksThis question was addressed to me in an interview.I'm obligated to ask this question of EDM-Mechanism of Material Removal topic in section Thermal Processes of Advanced Machining
Answer» The CORRECT choice is (d) Sparks Easiest EXPLANATION: The sparks are the one which contributes to the desired material removal in Electro DISCHARGE MACHINING.

Discussion

18.	Work piece tilting depends on which of the following factors?(a) Incident power(b) Beam speed(c) Groove direction(d) All of the mentionedI have been asked this question by my school principal while I was bunking the class.This key question is from LBM-Applications in section Thermal Processes of Advanced Machining
Answer» CORRECT choice is (d) All of the mentioned To explain: Work piece tilting depends on the INCIDENT power, beam SPEED, GROOVE direction, and optical absorption coefficient of the material.

Discussion

19.	Texturing is applied to the steel sheets at which stages of cold rolling?(a) Initial stages(b) Middle stages(c) Final stages(d) All of the mentionedThe question was asked during an interview.I need to ask this question from EDM-Applications in chapter Thermal Processes of Advanced Machining
Answer» CORRECT ANSWER is (a) Initial stages To ELABORATE: At the FINAL stages of COLD rolling, texturing is applied to the steel sheets.

Discussion

20.	Wire EDM is a special form of Electro discharge machining which contains __________ electrode.(a) Continuously moving(b) Periodically moving(c) Discontinuously moving(d) All of the mentionedThis question was posed to me in quiz.This is a very interesting question from EDM-Applications topic in section Thermal Processes of Advanced Machining
Answer» RIGHT option is (a) Continuously MOVING Explanation: Wire EDM is a SPECIAL type of EDM which uses a continuously moving electrode for removal of MATERIAL.

Discussion

21.	The simple electrodes are rotated at which speed for milling of work pieces in Electro discharge machining?(a) Very low(b) Low(c) Medium(d) HighThe question was posed to me in an online interview.My doubt is from EDM-Applications topic in portion Thermal Processes of Advanced Machining
Answer» The correct answer is (d) High The best I can EXPLAIN: Simple electrodes are rotated at high speeds for milling in Electro discharge MACHINING same as that of CONVENTIONAL milling.

Discussion

22.	Which type of electrodes are used for milling application in Electro discharge machining process?(a) Tubular type electrodes(b) Cylindrical type electrodes(c) Flat type electrodes(d) Spherical type electrodesI have been asked this question in an online quiz.My query is from EDM-Applications topic in chapter Thermal Processes of Advanced Machining
Answer» RIGHT ANSWER is (B) Cylindrical type electrodes For explanation I would SAY: Standard cylindrical electrodes are USED for milling application in EDM process.

Discussion

23.	Which type of holes can be produced through drilling using Electro discharge machining?(a) Irregular(b) Curved(c) Tapered(d) All of the mentionedThe question was posed to me during an online exam.I want to ask this question from EDM-Applications topic in division Thermal Processes of Advanced Machining
Answer» The correct choice is (d) All of the mentioned Explanation: DRILLING of WORK piece using EDM produced holes which can be irregular, CURVED, tapered as well as inclined holes.

Discussion

24.	In Electro discharge machining, some annealing of the work piece can be expected __________ the machined surface.(a) On(b) Just below(c) Above(d) At bottomThe question was posed to me during an internship interview.I want to ask this question from EDM-Heat Affected Zone (HAZ) topic in section Thermal Processes of Advanced Machining
Answer» Correct answer is (B) Just below The EXPLANATION: Annealing of some part of the work PIECE in EDM can be EXPECTED just below the machined surface.

Discussion

25.	Brass metal ensures which type of sparking conditions in Electro discharge machining?(a) Stable(b) Unstable(c) Unsteady(d) InsecureI had been asked this question in final exam.I would like to ask this question from EDM-Machining System in section Thermal Processes of Advanced Machining
Answer» Correct option is (a) STABLE Best EXPLANATION: Brass is a type of metal which ensures stable SPARKING conditions in ELECTRO discharge MACHINING.

Discussion

26.	What is the function of dielectric circulation unit in Electro discharge machining?(a) Constant gap(b) Supply power(c) Dielectric fluid supply(d) Work piece holdingThis question was posed to me by my college professor while I was bunking the class.My query is from EDM-Machining System topic in portion Thermal Processes of Advanced Machining
Answer» The correct ANSWER is (c) DIELECTRIC fluid SUPPLY To explain I would say: Dielectric CIRCULATION unit is used to supply dielectric fluid for flushing.

Discussion

27.	Which of the following are the applications of IBM?(a) Smoothing laser mirrors(b) Polishing surfaces(c) Shaping surface(d) All of the mentionedThis question was posed to me in an interview for job.My query is from IBM-Surface effects and Applications topic in chapter Thermal Processes of Advanced Machining
Answer» The correct choice is (d) All of the mentioned Explanation: SMOOTHING of LASER mirrors, polishing and shaping of OPTICAL surfaces are some of the APPLICATIONS of Ion beam machining.

Discussion

28.	Surface texturing produces a cone-and-ridge like configuration on the order of which size?(a) 0.5 µm(b) 1 µm(c) 1.5 µm(d) 2 µmThis question was addressed to me in semester exam.This interesting question is from IBM-Surface effects and Applications topic in portion Thermal Processes of Advanced Machining
Answer» The CORRECT option is (b) 1 µm To explain: Surface TEXTURING produces a cone-and-ridge-like configuration on the ORDER of 1 µm in size in Ion BEAM machining.

Discussion

29.	Number of atoms yielded in oblique cutting is __________ normal incidence.(a) Greater than(b) Lesser than(c) Same as(d) None of the mentionedI had been asked this question during an internship interview.My question is from Ion Beam Machining-Introduction, Material Removal Rate topic in portion Thermal Processes of Advanced Machining
Answer» Right answer is (a) Greater than Easy EXPLANATION: NUMBER of ATOMS yielded for an incident atom in oblique cutting is greater than normal incidence in IBM.

Discussion

30.	What happens to the machining speed if the thickness of material is increased in PBM?(a) Decreases(b) Increases(c) Enhanced(d) Remains sameThe question was posed to me in final exam.My question comes from PBM topic in division Thermal Processes of Advanced Machining
Answer» Correct CHOICE is (a) Decreases The explanation is: Machining speed in PLASMA beam machining reduces with an INCREASE in the THICKNESS of the work piece material.

Discussion

31.	Material removal rates depend on which of the following factors?(a) Work piece material(b) Type of cutting(c) Shielding gases(d) All of the mentionedThis question was posed to me by my college professor while I was bunking the class.This question is from PBM topic in portion Thermal Processes of Advanced Machining
Answer» The CORRECT option is (d) All of the mentioned To explain: Material removal RATES in PBM depend on work piece material, type of CUTTING and the shielding gas.

Discussion

32.	Which of the following are the advantages of EBM process?(a) Drilling rates(b) No distortion(c) High accuracy(d) All of the mentionedI had been asked this question in quiz.I want to ask this question from EBM-Applications, Advantages and Disadvantages topic in chapter Thermal Processes of Advanced Machining
Answer» Right ANSWER is (d) All of the mentioned Easiest explanation: The main ADVANTAGES of ELECTRON beam machining are high DRILLING rates, no mechanical distortion, high accuracy and REPEATABILITY.

Discussion

33.	How is the operating cost of the machines used in Laser beam machining?(a) Low(b) Moderate(c) High(d) Very highThis question was posed to me in an interview for internship.My enquiry is from LBM-Advantages and Limitations topic in chapter Thermal Processes of Advanced Machining
Answer» The correct answer is (a) LOW Best explanation: The operating cost of the MACHINES in LBM is low but the equipment cost itself is of HIGH cost.

Discussion

34.	The prototype of the machine used in EBM process was first introduced in which year?(a) 1924(b) 1943(c) 1947(d) 1956I have been asked this question in unit test.I want to ask this question from Electronbeam Machining-Introduction, Equipment and Material removal topic in chapter Thermal Processes of Advanced Machining
Answer» The correct option is (C) 1947 Explanation: Steigerwald was the scientist who DESIGNED a prototype machine of ELECTRON BEAM machining in 1947.

Discussion

35.	The taper obtained in Laser drilling process is how much of the hole diameter?(a) 1 – 5%(b) 5 – 20%(c) 20 – 50%(d) 50 – 90%This question was posed to me in class test.I would like to ask this question from LBM-Applications topic in division Thermal Processes of Advanced Machining
Answer» The correct CHOICE is (b) 5 – 20% The best I can explain: Taper value obtained in Laser DRILLING process RANGE between 5 – 20% of the hole diameter.

Discussion

36.	How much amount of burr is produce when we use Wire Electro discharge machining for machining of work pieces?(a) 10%(b) 20%(c) No burr(d) Small amountI got this question in an internship interview.My question is taken from EDM-Applications topic in section Thermal Processes of Advanced Machining
Answer» Right choice is (c) No burr Explanation: In Wire Electro discharge machining no burr is PRODUCED WITHOUT any DISTORTION while machining work pieces.

Discussion

37.	Which of the following are the steps included in the die sinking process of EDM?(a) CAD of electrode(b) Electrode manufacturing(c) Programming for die sinking(d) All of the mentionedThe question was posed to me in semester exam.This intriguing question comes from EDM-Applications in section Thermal Processes of Advanced Machining
Answer» The CORRECT answer is (d) All of the mentioned To ELABORATE: Designing of electrode, then MANUFACTURING, and PROGRAMMING of die sinking are the steps to be followed for die sinking process in EDM.

Discussion

38.	What are the recast layer thickness values obtained in ED sawing?(a) 0.001 to 0.022 mm(b) 0.025 to 0.130 mm(c) 0.236 to 0.352 mm(d) 0.432 to 0.568 mmI have been asked this question in examination.The question is from EDM-Applications topic in division Thermal Processes of Advanced Machining
Answer» Right ANSWER is (b) 0.025 to 0.130 MM Best explanation: The RECAST layer thickness values obtained from ED sawing range from 0.025 to 0.13 mm.

Discussion

39.	Which of the following are the applications of Electro discharge machining?(a) Holes(b) Slots(c) Texturing(d) All of the mentionedThis question was posed to me in unit test.This key question is from EDM-Applications in section Thermal Processes of Advanced Machining
Answer» CORRECT option is (d) All of the mentioned Best explanation: MICROMACHINING of holes, slots, dies, TEXTURING, milling, surface modification and MECHANICAL pulsing are some typical applications of Electro discharge machining.

Discussion

40.	In Electro discharge machining, materials with low melting point have which type of material removal rate?(a) Very low(b) Low(c) Medium(d) HighThe question was asked during an interview for a job.My question is taken from EDM-Material Removal Rate topic in chapter Thermal Processes of Advanced Machining
Answer» Correct choice is (d) HIGH To EXPLAIN I WOULD say: In ELECTRO discharge machining, materials having low melting point have high material REMOVAL rates and vice-versa.

Discussion

41.	State whether the following statement is true or false regarding the dielectric in EDM.(a) “In EDM, flushing through the tool is more preferred than side flushing.”(b) True(c) FalseThis question was addressed to me in a national level competition.My question comes from EDM-Machining System in portion Thermal Processes of Advanced Machining
Answer» The correct ANSWER is (a) “In EDM, flushing through the tool is more preferred than SIDE flushing.” EXPLANATION: Flushing through the tool is preferred than side flushing for deep cuts.

Discussion

42.	Which of the following is not a function of dielectric in EDM?(a) Flush particles(b) Cool the section(c) Maintain voltage(d) Provide insulationThe question was asked during an online interview.The origin of the question is EDM-Machining System in division Thermal Processes of Advanced Machining
Answer» The correct option is (C) Maintain voltage The explanation is: Flushing particles, providing insulation and cooling the sections that are HEATED, are the FUNCTIONS of DIELECTRIC.

Discussion

43.	State whether the following statement is true or false regarding EDM.(a) collide with positive ions to generate heat.”(b) True(c) FalseI had been asked this question in an online interview.My query is from EDM-Mechanism of Material Removal in section Thermal Processes of Advanced Machining
Answer» The CORRECT CHOICE is (B) True Explanation: In Electro DISCHARGE machining, electrons collide with neutral ATOMS producing positive ions and further electrons.

Discussion

44.	What is the radius of channel, when electrical breakdown occur?(a) 4 µm(b) 6 µm(c) 8 µm(d) 10 µmI have been asked this question in an interview for job.My question is from EDM-Mechanism of Material Removal in portion Thermal Processes of Advanced Machining
Answer» Correct answer is (d) 10 µm The EXPLANATION: In EDM, the ELECTRICAL breakdown OCCURS in DIELECTRIC in a channel of radius about 10 µm.

Discussion

45.	In advanced machining processes, what is the full form of EDM?(a) Electro discharge Machining(b) Electro discharge Manufacturing(c) Electrical dimensioning Machining(d) Electrode dimensions ManufacturingI have been asked this question in homework.Question is taken from Electro Discharge Machining-Introduction in section Thermal Processes of Advanced Machining
Answer» The CORRECT choice is (a) Electro discharge MACHINING To elaborate: Full form of EDM in ADVANCED machining processes is, Electrodischarge machining.

Discussion

46.	Which of the following materials can be textured using the IBM process?(a) Copper(b) Nickel(c) Stainless steel(d) All of the mentionedI got this question by my school teacher while I was bunking the class.My doubt is from IBM-Surface effects and Applications in division Thermal Processes of Advanced Machining
Answer» Right option is (d) All of the mentioned To explain: Materials such as Copper, stainless STEEL, NICKEL, SILVER and gold can be used for producing TEXTURED CONES using IBM.

Discussion

47.	What are the values of current densities required in IBM?(a) 0.25 mA/cm^2(b) 0.35 mA/cm^2(c) 0.55 mA/cm^2(d) 0.85 mA/cm^2This question was posed to me during an interview.The question is from Ion Beam Machining-Introduction, Material Removal Rate in section Thermal Processes of Advanced Machining
Answer» The CORRECT answer is (d) 0.85 mA/cm^2 The explanation is: The value of current density of about 0.85 mA/cm^2 is REQUIRED for machining the WORK piece materials in ION beam machining.

Discussion

48.	What is the full form of IBM in the advanced machining processes?(a) Ion Beam Machining(b) Ion Beam Manufacturing(c) Ion Blast Machining(d) Ion Blast ManufacturingThe question was asked in an internship interview.My query is from Ion Beam Machining-Introduction, Material Removal Rate in section Thermal Processes of Advanced Machining
Answer» The correct CHOICE is (a) Ion BEAM Machining Explanation: The full FORM of IBM is Ion Beam Machining in the ADVANCED machining processes.

Discussion

49.	What are the values of material removal rates in EBM process?(a) 1 mm^3/min(b) 10 mm^3/min(c) 100 mm^3/min(d) 1000 mm^3/minThis question was posed to me in homework.The doubt is from Electronbeam Machining-Introduction, Equipment and Material removal in portion Thermal Processes of Advanced Machining
Answer» The CORRECT ANSWER is (b) 10 mm^3/min To elaborate: The values of the material removal rates in the process of ELECTRON BEAM machining are about 10 mm^3/min.

Discussion

50.	What are the values of current densities used in the process of EBM?(a) 5 and 15 A/cm^2(b) 15 and 20 A/cm^2(c) 20 and 30 A/cm^2(d) 40 and 60 A/cm^2This question was addressed to me in an online interview.The origin of the question is Electronbeam Machining-Introduction, Equipment and Material removal in section Thermal Processes of Advanced Machining
Answer» Right answer is (a) 5 and 15 A/cm^2 Explanation: The values of the CURRENT DENSITIES USED in EBM LIE between 5 and 15 A/cm^2.

Discussion

Explore topic-wise InterviewSolutions in .

What is the value of beam diameter that is obtained in IBM?(a) 1 cm(b) 3 cm(c) 5 cm(d) 7 cmThis question was posed to me in exam.Origin of the question is Ion Beam Machining-Introduction, Material Removal Rate topic in portion Thermal Processes of Advanced Machining

What are the values of tolerances obtained by using PBM?(a) ± 0.6 mm(b) ± 1.6 mm(c) ± 2.6 mm(d) ± 3.6 mmThe question was asked by my college director while I was bunking the class.I would like to ask this question from PBM topic in division Thermal Processes of Advanced Machining

The cut edge of the material tends to be __________ than the base metal in PBM.(a) Smoother(b) Harder(c) Same as(d) None of the mentionedThis question was posed to me in my homework.I need to ask this question from PBM in section Thermal Processes of Advanced Machining

Which type of thin cast layer is produced when we use EBM?(a) Thin layer(b) Thick layer(c) No layer(d) All of the mentionedThe question was asked in exam.Query is from EBM-Applications, Advantages and Disadvantages topic in section Thermal Processes of Advanced Machining

Which type of laser can be used for direct drilling or percussion?(a) Ruby laser(b) Nd-YAG laser(c) Ruby & Nd-YAG laser(d) None of the mentionedThe question was posed to me in an interview.This key question is from LBM-Applications in section Thermal Processes of Advanced Machining

Material removal rates which are about mg/pulse produces which type of holes?(a) Shallow(b) Deep(c) Very deep(d) All of the mentionedThis question was addressed to me in an interview.My query is from LBM-Applications in division Thermal Processes of Advanced Machining

Which of the following are the process variables for texturing process in EDM?(a) Pulse current(b) Electrode polarity(c) Dielectric type(d) All of the mentionedI got this question during an internship interview.My question is from EDM-Applications in section Thermal Processes of Advanced Machining

What are range of diameter values obtained by drilling using EDM?(a) 0.01 to 0.05 mm(b) 0.1 to 0.5 mm(c) 1 to 5 mm(d) 10 to 15 mmI have been asked this question by my school principal while I was bunking the class.Enquiry is from EDM-Applications in portion Thermal Processes of Advanced Machining

Which of the following can be used as dielectric fluids in EDM?(a) Kerosene(b) Silicon fluids(c) Distilled water(d) All of the mentionedI have been asked this question during an online interview.My question comes from EDM-Machining System in portion Thermal Processes of Advanced Machining

Which of the following tungsten carbides are used as electrodes in EDM?(a) Silver tungsten(b) Copper tungsten(c) All of the mentioned(d) None of the mentionedThe question was posed to me in exam.Enquiry is from EDM-Machining System in chapter Thermal Processes of Advanced Machining

Texturing is applied to the steel sheets at which stages of cold rolling?(a) Initial stages(b) Middle stages(c) Final stages(d) All of the mentionedThe question was asked during an interview.I need to ask this question from EDM-Applications in chapter Thermal Processes of Advanced Machining

The simple electrodes are rotated at which speed for milling of work pieces in Electro discharge machining?(a) Very low(b) Low(c) Medium(d) HighThe question was posed to me in an online interview.My doubt is from EDM-Applications topic in portion Thermal Processes of Advanced Machining

Brass metal ensures which type of sparking conditions in Electro discharge machining?(a) Stable(b) Unstable(c) Unsteady(d) InsecureI had been asked this question in final exam.I would like to ask this question from EDM-Machining System in section Thermal Processes of Advanced Machining

What happens to the machining speed if the thickness of material is increased in PBM?(a) Decreases(b) Increases(c) Enhanced(d) Remains sameThe question was posed to me in final exam.My question comes from PBM topic in division Thermal Processes of Advanced Machining

How is the operating cost of the machines used in Laser beam machining?(a) Low(b) Moderate(c) High(d) Very highThis question was posed to me in an interview for internship.My enquiry is from LBM-Advantages and Limitations topic in chapter Thermal Processes of Advanced Machining

The taper obtained in Laser drilling process is how much of the hole diameter?(a) 1 – 5%(b) 5 – 20%(c) 20 – 50%(d) 50 – 90%This question was posed to me in class test.I would like to ask this question from LBM-Applications topic in division Thermal Processes of Advanced Machining

How much amount of burr is produce when we use Wire Electro discharge machining for machining of work pieces?(a) 10%(b) 20%(c) No burr(d) Small amountI got this question in an internship interview.My question is taken from EDM-Applications topic in section Thermal Processes of Advanced Machining

What are the recast layer thickness values obtained in ED sawing?(a) 0.001 to 0.022 mm(b) 0.025 to 0.130 mm(c) 0.236 to 0.352 mm(d) 0.432 to 0.568 mmI have been asked this question in examination.The question is from EDM-Applications topic in division Thermal Processes of Advanced Machining

Which of the following are the applications of Electro discharge machining?(a) Holes(b) Slots(c) Texturing(d) All of the mentionedThis question was posed to me in unit test.This key question is from EDM-Applications in section Thermal Processes of Advanced Machining

Which of the following is not a function of dielectric in EDM?(a) Flush particles(b) Cool the section(c) Maintain voltage(d) Provide insulationThe question was asked during an online interview.The origin of the question is EDM-Machining System in division Thermal Processes of Advanced Machining

State whether the following statement is true or false regarding EDM.(a) collide with positive ions to generate heat.”(b) True(c) FalseI had been asked this question in an online interview.My query is from EDM-Mechanism of Material Removal in section Thermal Processes of Advanced Machining

What is the radius of channel, when electrical breakdown occur?(a) 4 µm(b) 6 µm(c) 8 µm(d) 10 µmI have been asked this question in an interview for job.My question is from EDM-Mechanism of Material Removal in portion Thermal Processes of Advanced Machining

What are the values of current densities required in IBM?(a) 0.25 mA/cm^2(b) 0.35 mA/cm^2(c) 0.55 mA/cm^2(d) 0.85 mA/cm^2This question was posed to me during an interview.The question is from Ion Beam Machining-Introduction, Material Removal Rate in section Thermal Processes of Advanced Machining