210 + Interview Questions in Electrochemical Processes in Advanced Machining Page 1 InterviewSolution

1.	What is the value of applied voltage used in ECDB process?(a) 1 to 5 V(b) 5 to 11 V(c) 12 to 24 V(d) 25 to 50 VI got this question during an online interview.My enquiry is from Electrochemical Deburring topic in division Electrochemical Processes of Advanced Machining
Answer» Right choice is (c) 12 to 24 V To explain: Value of VOLTAGE used in ECDB process RANGES from 12 to 24 V.

Discussion

2.	Material is removed on which basis, in Shaped tube electrolytic machining?(a) Dissolution(b) Vaporization(c) Abrasion(d) ErosionThis question was addressed to me during an internship interview.I'd like to ask this question from Shaped Tube Electrolytic Machining in division Electrochemical Processes of Advanced Machining
Answer» The CORRECT choice is (a) DISSOLUTION To elaborate: In STEM, dissolution TAKES place when a potential DIFFERENCE is applied between the anodic work piece and cathodic tool.

Discussion

3.	What are the normal cycle times for deburring process using ECDB?(a) 10 to 20 s(b) 30 to 45 s(c) 50 to 70 s(d) 80 to 100 sI have been asked this question in an online interview.My question is based upon Electrochemical Deburring topic in portion Electrochemical Processes of Advanced Machining
Answer» The correct OPTION is (b) 30 to 45 s Easy EXPLANATION: The normal CYCLE times are between 30 to 45 s after which, spindle is RETRACTED and part is REMOVED.

Discussion

4.	Which of the following processes can be used for deburring?(a) Water blasting(b) Abrasive flow machining(c) Electrochemical deburring(d) All of the mentionedThe question was asked in quiz.Query is from Electrochemical Deburring in section Electrochemical Processes of Advanced Machining
Answer» Right answer is (d) All of the mentioned The explanation is: Different METHODS used for deburring include VIBRATORY and barrel finishing, tumbling, WATER blasting, ABRASIVE FLOW machining, Electrochemical deburring and many more.

Discussion

5.	How is the material removed in Electrochemical jet drilling process?(a) Using Platinum wire(b) Using Ti coated electrode(c) By spraying electrolyte(d) Using glass nozzleI have been asked this question during a job interview.Asked question is from Electrochemical Jet Drilling in division Electrochemical Processes of Advanced Machining
Answer» CORRECT OPTION is (c) By spraying ELECTROLYTE The best EXPLANATION: Material is removed by spraying electrolyte through the cathode, in ELECTROCHEMICAL jet drilling.

Discussion

6.	Compared to the forward voltages, how are the reverse voltages?(a) 0.01 – 0.1 times(b) 0.1 – 1 times(c) 1 – 10 times(d) 10 – 100 timesThis question was posed to me by my college director while I was bunking the class.The above asked question is from Shaped Tube Electrolytic Machining in chapter Electrochemical Processes of Advanced Machining
Answer» The correct CHOICE is (B) 0.1 – 1 times The BEST EXPLANATION: Reverse voltages used in STEM are 0.1 – 1 times the forward voltages, used in STEM.

Discussion

7.	In order to produce a proper radius, by how much should the tool tip overlap the machined area?(a) 0.5 to 1 mm(b) 1 to 1.5 mm(c) 1.5 to 2 mm(d) 2 to 2.5 mmThe question was posed to me in an interview for job.This interesting question is from Electrochemical Deburring topic in chapter Electrochemical Processes of Advanced Machining
Answer» The correct choice is (B) 1 to 1.5 MM Easy EXPLANATION: In ECDB, the tool tip should OVERLAP the MACHINED area by 1.5 to 2 mm in order to produce a proper radius.

Discussion

8.	Burrs are removed at which amount of current densities below?(a) Very low(b) Low(c) High(d) MediumThis question was addressed to me by my school teacher while I was bunking the class.This interesting question is from Electrochemical Deburring in chapter Electrochemical Processes of Advanced Machining
Answer» The CORRECT choice is (c) HIGH Explanation: High current DENSITIES are required to REMOVE the burrs from the work PIECES.

Discussion

9.	What are the values of voltages used in Electrochemical jet drilling process?(a) 100 to 200 V(b) 200 to 400 V(c) 400 to 800 V(d) 800 to 1600 VThe question was asked by my college professor while I was bunking the class.My question is from Electrochemical Jet Drilling topic in portion Electrochemical Processes of Advanced Machining
Answer» Correct option is (c) 400 to 800 V Explanation: The optimum range of voltages used in Electrochemical JET DRILLING are between 400 to 800 V.

Discussion

10.	What is the percentage of electrolyte dissolved in water?(a) 1 – 5%(b) 10 – 25%(c) 40 – 70%(d) 75 – 90%This question was posed to me during an online exam.This is a very interesting question from Shaped Tube Electrolytic Machining in chapter Electrochemical Processes of Advanced Machining
Answer» CORRECT CHOICE is (b) 10 – 25% For explanation I would say: Concentration of ELECTROLYTE, used in STEM, is 10 – 25% weight in water.

Discussion

11.	What is the full form of STEM in advanced machining processes?(a) Small Tool Electrode Machining(b) Small Tube Electrode Manufacturing(c) Shaped Tube Electrolytic Machining(d) Shaped Tube Electrode MachiningI got this question in exam.I'm obligated to ask this question of Shaped Tube Electrolytic Machining topic in section Electrochemical Processes of Advanced Machining
Answer» Right choice is (C) Shaped Tube ELECTROLYTIC MACHINING The best EXPLANATION: Full FORM of STEM in advanced machining processes is Shaped tube electrolytic machining.

Discussion

12.	What may the hole sizes, that can be machined using STEM process?(a) 0.02 – 0.3 mm(b) 0.5 – 6 mm(c) 8 – 20 mm(d) 50 – 76 mmThe question was posed to me by my school teacher while I was bunking the class.Asked question is from Shaped Tube Electrolytic Machining in division Electrochemical Processes of Advanced Machining
Answer» The correct option is (b) 0.5 – 6 mm To elaborate: The hole SIZES that can be machined USING STEM PROCESS, range between 0.5 – 6 mm.

Discussion

13.	Which of the following materials can be machined using ECDB process?(a) Carbon steels(b) Copper alloys(c) Aluminium alloys(d) All of the mentionedThe question was posed to me at a job interview.I'd like to ask this question from Electrochemical Deburring in chapter Electrochemical Processes of Advanced Machining
Answer» Correct choice is (d) All of the mentioned The BEST explanation: All the materials mentioned above, can be MACHINED using ECDB PROCESS.

Discussion

14.	Electrochemical deburring ensures which of the following factors after removal of burrs?(a) Required accuracy(b) Proper radius(c) Clean edge(d) All of the mentionedThis question was posed to me in final exam.The question is from Electrochemical Deburring topic in chapter Electrochemical Processes of Advanced Machining
Answer» Right choice is (d) All of the mentioned The BEST I can EXPLAIN: ECDB ensures the removal of burrs art required accuracy, UNIFORMITY, proper radius and CLEAN EDGES.

Discussion

15.	What are the values of feed rates used in ES drilling process?(a) 0.01 to 0.5 mm/min(b) 0.75 to 2.5 mm/min(c) 3 to 4.5 mm/min(d) 5 to 7.5 mm/minI have been asked this question during an internship interview.This is a very interesting question from Electrostream (Capillary) Drilling topic in division Electrochemical Processes of Advanced Machining
Answer» RIGHT OPTION is (B) 0.75 to 2.5 mm/min The explanation is: Feed rate VALUES used in ES drilling, range between 0.75 to 2.5 mm/min.

Discussion

16.	Current efficiencies
Answer» The CORRECT choice is (d) All of the mentioned Best explanation: Current efficiencies less than 100 percent may be related to GAS evolution, PASSIVE oxide formation, which in turn lead to less dissolution.

Discussion

17.	Material is removed using which part of the electrode in ECDR?(a) Only front(b) Only side(c) Front and side(d) None of the mentionedThe question was asked during an online interview.My question is based upon Electro Chemical Drilling in chapter Electrochemical Processes of Advanced Machining
Answer» Right CHOICE is (C) Front and side To elaborate: Material is removed at the FRONTAL gaps and also dissolution takes place at the side machining gaps of the CATHODIC tool and work piece.

Discussion

18.	State whether the following statement is true or false regarding the advantages of ECDB.(a) “In ECDB, automation does not contribute to productivity.”(b) True(c) FalseI got this question during an online interview.My enquiry is from Electrochemical Deburring topic in division Electrochemical Processes of Advanced Machining
Answer» The correct option is (B) True For explanation I WOULD say: Electrochemical deburring can be automated for HIGHER PRODUCTIVITY.

Discussion

19.	Burr is removed to a radius of _________ in ECDB process.(a) 0.01 to 0.04 mm(b) 0.05 to 0.20 mm(c) 0.25 to 0.40 mm(d) 0.50 to 0.75 mmThis question was posed to me in a job interview.I'd like to ask this question from Electrochemical Deburring topic in division Electrochemical Processes of Advanced Machining
Answer» The correct ANSWER is (b) 0.05 to 0.20 mm To ELABORATE: Burr of height 0.5 mm to a RADIUS of 0.05 to 0.2 mm can be removed using ECDB.

Discussion

20.	State whether the following statement is true or false regarding ECJD?(a) “In ECJD, there is no need of room for exit of electrolyte.”(b) True(c) FalseThe question was asked during a job interview.Origin of the question is Electrochemical Jet Drilling topic in portion Electrochemical Processes of Advanced Machining
Answer» Right option is (b) True The best explanation: In ECJD, ENOUGH room is required for the EXIT of ELECTROLYTE, preferably in the form of spray.

Discussion

21.	Which of the following parameters must be carefully monitored for satisfactory machining?(a) Acid temperature(b) Pressure(c) Concentration(d) All of the mentionedThis question was posed to me in an interview.My enquiry is from Electrostream (Capillary) Drilling topic in section Electrochemical Processes of Advanced Machining
Answer» The CORRECT answer is (d) All of the mentioned The best explanation: ACID temperature, pressure, concentration and feed RATE are to be carefully monitored for SATISFACTORY machining.

Discussion

22.	What are the tolerance values for a 1.5 mm diameter hole, which is machined using STEM?(a) ± 0.025 mm(b) ± 0.050 mm(c) ± 0.075 mm(d) ± 0.100 mmThis question was posed to me in examination.This interesting question is from Shaped Tube Electrolytic Machining topic in portion Electrochemical Processes of Advanced Machining
Answer» The correct answer is (c) ± 0.075 MM To EXPLAIN I would say: Diametrical tolerance value increases with the increase in hole DIAMETER, which varies as – ± 0.050 mm for 0.6 mm diameter hole, ± 0.075 mm for 1.5 mm diameter hole and ± 0.100 mm for 6 mm hole diameter.

Discussion

23.	In ECDB process, rotating and feeding the tool electrode __________ the deburring process.(a) Enhances(b) Degrades(c) Damages(d) All of the mentionedThe question was posed to me during an internship interview.The doubt is from Electrochemical Deburring in section Electrochemical Processes of Advanced Machining
Answer» The CORRECT CHOICE is (a) Enhances To elaborate: Rotating and feeding the TOOL in ECDB PROCESS, enhances the process of deburring.

Discussion

24.	Which of the following are the advantages of using ECDB process?(a) Increased product quality(b) Reduced labour cost(c) Increased reliability(d) All of the mentionedI had been asked this question during an interview.Asked question is from Electrochemical Deburring topic in division Electrochemical Processes of Advanced Machining
Answer» Correct choice is (d) All of the mentioned The best I can EXPLAIN: Increased product quality and reliability, reduced LABOUR COSTS, ELIMINATION of costly hand deburring etc.., are some of the ADVANTAGES of ECDB.

Discussion

25.	What are the values of deburring speeds used in ECDB process?(a) 100 to 200 mm/min(b) 200 to 400 mm/min(c) 400 to 500 mm/min(d) 500 to 700 mm/minI got this question in homework.This intriguing question originated from Electrochemical Deburring in section Electrochemical Processes of Advanced Machining
Answer» RIGHT option is (c) 400 to 500 mm/min For EXPLANATION I would say: VALUES of speeds of DEBURRING, range between 400 to 500 mm/min.

Discussion

26.	In advanced machining processes, what is the full form of ES drilling?(a) Electro stream(b) Electrical shaped(c) Electron shaped(d) Electric shockThe question was posed to me by my school principal while I was bunking the class.This interesting question is from Electrostream (Capillary) Drilling in chapter Electrochemical Processes of Advanced Machining
Answer» RIGHT OPTION is (a) Electro stream For explanation: In advanced MACHINING processes, full FORM of ES drilling is Electrostream drilling.

Discussion

27.	What is the value of surface roughness obtained in Electrochemical deburring process?(a) 0.1 to 1 µm(b) 1 to 2 µm(c) 2 to 4 µm(d) 5 to 8 µmThis question was posed to me in an interview for internship.My question is from Electrochemical Deburring in division Electrochemical Processes of Advanced Machining
Answer» Correct OPTION is (c) 2 to 4 µm To elaborate: SURFACE roughness obtained in ECDB process is about 2 to 4 µm.

Discussion

28.	After deburring is done, which of the following is formed?(a) Flat surfaces(b) Controlled radius(c) Sharp edges(d) All of the mentionedI got this question in an online quiz.I need to ask this question from Electrochemical Deburring in chapter Electrochemical Processes of Advanced Machining
Answer» The correct choice is (b) CONTROLLED RADIUS The explanation: Dimensions of the PART are CHANGES by the removal of burrs leaving a controlled radius.

Discussion

29.	If sparking occurs due to very less gap between work surfaces, which parts gets damaged?(a) Tool(b) Work piece(c) All of the mentioned(d) None of the mentionedI got this question in my homework.This interesting question is from Electro Chemical Drilling in portion Electrochemical Processes of Advanced Machining
Answer» Right option is (c) All of the mentioned To explain: SPARKING, which OCCUR due to very less gap between TOOL and work piece, which DAMAGES both the parts in ECDR.

Discussion

30.	What may be the temperature of sulphuric acid used in the STEM process?(a) 10 ^oC(b) 21 ^oC(c) 38 ^oC(d) 50 ^oCI have been asked this question in my homework.This interesting question is from Shaped Tube Electrolytic Machining in portion Electrochemical Processes of Advanced Machining
Answer» Correct OPTION is (c) 38 ^oC The EXPLANATION is: The temperature of sulphuric ACIDS used in the STEM process may be AROUND 38 ^oC.

Discussion

31.	What happens to the roundness error if we use the rotation of ECDR tool?(a) Increases(b) Remains same(c) Decreases(d) EnhancesI got this question in an internship interview.My query is from Electro Chemical Drilling topic in division Electrochemical Processes of Advanced Machining
Answer» CORRECT ANSWER is (C) Decreases Easiest explanation: Roundness error decreases, if the tool is rotated in ECDR, since it ENSURES the homogenous flow of electrolyte in the MACHINING gaps.

Discussion

32.	What is the value of burr height that can be removed using ECDB process?(a) 0.1 mm(b) 0.3 mm(c) 0.5 mm(d) 0.7 mmI got this question in quiz.Query is from Electrochemical Deburring in section Electrochemical Processes of Advanced Machining
Answer» The CORRECT option is (c) 0.5 mm Explanation: Burr height of AROUND 0.5 mm can be removed USING ECDB PROCESS.

Discussion

33.	To which components mentioned below, ECDM can be applied?(a) Spline shafts(b) Milled components(c) Drilled holes(d) All of the mentionedThe question was posed to me in an online quiz.My doubt stems from Electrochemical Deburring in portion Electrochemical Processes of Advanced Machining
Answer» The correct choice is (d) All of the mentioned Easiest explanation: ECDB can be applied to gears, spline SHAFTS, milled components, drilled HOLES, and PUNCHED BLANKS.

Discussion

34.	This Electrostream drilling is used when we cannot drill which of the following type of holes?(a) Too deep holes by EDM(b) Small holes by STEM(c) All of the mentioned(d) None of the mentionedI had been asked this question in an online quiz.Origin of the question is Electrostream (Capillary) Drilling in chapter Electrochemical Processes of Advanced Machining
Answer» The correct ANSWER is (c) All of the mentioned To elaborate: ES DRILLING is USED to drill finer holes which are too deep to be PRODUCED by EDM and too small to be drilled by STEM.

Discussion

35.	In the following electrodes, on which one the process of deburring takes place?(a) Cathode(b) Anode(c) Cathode & Anode(d) None of the mentionedI have been asked this question in semester exam.I would like to ask this question from Electrochemical Deburring topic in portion Electrochemical Processes of Advanced Machining
Answer» The correct OPTION is (C) Cathode & ANODE To elaborate: Anode is the electrode, on which, the PROCESS of deburring is DONE.

Discussion

36.	The lower limit of the hole size in ECJD, is determined by which of the following factors?(a) Smallest hole(b) Pressure required(c) Amount of overcut(d) All of the mentionedThe question was posed to me in examination.This key question is from Electrochemical Jet Drilling in portion Electrochemical Processes of Advanced Machining
Answer» The correct ANSWER is (d) All of the mentioned The best I can explain: The lower LIMIT of HOLE size depend on SMALLEST hole that can be drilled in cathodic nozzle, pressure required for pumping electrolyte and the overcut amount.

Discussion

37.	Which of the following are the advantages of STEM?(a) Depth to diameter ratio of 300(b) Non parallel holes can be drilled(c) No recast layer(d) All of the mentionedI have been asked this question at a job interview.This intriguing question comes from Shaped Tube Electrolytic Machining in division Electrochemical Processes of Advanced Machining
Answer» Correct choice is (d) All of the mentioned To elaborate: Main advantages of STEM are depth to diameter ratio of 300, non-parallel holes can be drilled, no RECAST layer are produced, SHAPED and CURVED holes can be produced.

Discussion

38.	Overcut produced in ECRD is difference between which of the following parameters?(a) Diameter of tool, diameter of hole(b) Diameter of hole, diameter of tool(c) Depth of tool, diameter of tool(d) Diameter of tool, depth of toolI had been asked this question in class test.Enquiry is from Electro Chemical Drilling topic in section Electrochemical Processes of Advanced Machining
Answer» The CORRECT choice is (b) DIAMETER of hole, diameter of TOOL To explain: Overcut is the DIFFERENCE between the diameter of hole produced in work piece and the diameter of tool.

Discussion

39.	What is the material removal mechanism used in Electrochemical jet drilling?(a) Abrasion(b) Dissolution(c) Vaporization(d) ErosionThis question was addressed to me by my school principal while I was bunking the class.I'm obligated to ask this question of Electrochemical Jet Drilling in chapter Electrochemical Processes of Advanced Machining
Answer» RIGHT ANSWER is (b) Dissolution Best EXPLANATION: ELECTROCHEMICAL dissolution is the MEANS of material removal in Electrochemical jet drilling.

Discussion

40.	Higher material removal rates are associated with _________ feed rates and _________ tool diameters.(a) Larger, smaller(b) Smaller, larger(c) Smaller, smaller(d) Larger, largerI had been asked this question by my college professor while I was bunking the class.I want to ask this question from Electrostream (Capillary) Drilling topic in chapter Electrochemical Processes of Advanced Machining
Answer» RIGHT choice is (d) Larger, larger To explain I WOULD SAY: Rates of material removal are HIGH, when feed rates are high and larger tool diameters.

Discussion

41.	Compared to the diameter to depth ratio of ES drilling, how is ECJD’s ratio?(a) Lower(b) Higher(c) Same as ES(d) None of the mentionedThis question was addressed to me during an interview for a job.This key question is from Electrochemical Jet Drilling in division Electrochemical Processes of Advanced Machining
Answer» Right option is (a) Lower The EXPLANATION: ES drilling has a DIAMETER to depth RATIO of 1:100, while ECJD has a ratio of 1:12.

Discussion

42.	Which of the following are the metals, which can be machined using sulphuric acid?(a) Carbon steels(b) Haste alloy(c) Inconel(d) All of the mentionedThis question was posed to me in homework.I would like to ask this question from Electrostream (Capillary) Drilling in division Electrochemical Processes of Advanced Machining
Answer» The correct option is (d) All of the mentioned To elaborate: HASTE ALLOY, RENE alloy, INCONEL, carbon and stainless steels are the materials machined using SULPHURIC acid.

Discussion

43.	State whether the following statement is true or false regarding ES drilling.(a) “In ES drilling, hydrochloric acid is used for machining aluminium and its alloys.”(b) True(c) FalseThe question was asked during an online interview.My doubt stems from Electrostream (Capillary) Drilling topic in section Electrochemical Processes of Advanced Machining
Answer» The correct choice is (a) “In ES drilling, HYDROCHLORIC acid is used for machining aluminium and its ALLOYS.” BEST EXPLANATION: Hydrochloric acids are used for machining Al and its alloys and sulphuric acid is recommended for other metals.

Discussion

44.	Which of the following acts as the cathodic tool in ES drilling?(a) Titanium base(b) Platinum wire(c) Glass nozzle(d) Work pieceI had been asked this question in semester exam.This key question is from Electrostream (Capillary) Drilling topic in chapter Electrochemical Processes of Advanced Machining
Answer» The correct choice is (b) Platinum wire Easiest EXPLANATION: Unlike the case of STEM process, which USES coated TI TUBE as cathode, ES DRILLING used platinum wire as cathode electrode.

Discussion

45.	State whether the following statement is true or false regarding ECJD.(a) “In ECJD, diameter of hole produced, depend up on the throwing power of electrolyte.”(b) True(c) FalseThe question was posed to me in an online interview.My doubt is from Electrochemical Jet Drilling topic in chapter Electrochemical Processes of Advanced Machining
Answer» The correct choice is (a) “In ECJD, DIAMETER of HOLE produced, DEPEND up on the THROWING power of electrolyte.” To explain I would say: Diameter of the hole produced, depend up on the throwing power of electrolyte.

Discussion

46.	What are the normal hole depth tolerance values in ES drilling?(a) ± 0.03 mm(b) ± 0.05 mm(c) ± 0.07 mm(d) ± 0.09 mmThis question was addressed to me during an internship interview.My enquiry is from Electrostream (Capillary) Drilling in chapter Electrochemical Processes of Advanced Machining
Answer» The correct OPTION is (b) ± 0.05 mm For explanation I would SAY: The normal hole depth TOLERANCES obtained in ES drilling, range between ± 0.05 mm.

Discussion

47.	Compared to the required diameter of the hole, how is the nozzle diameter?(a) Smaller(b) Larger(c) Same as required(d) All of the mentionedThe question was posed to me in class test.This interesting question is from Electrostream (Capillary) Drilling in chapter Electrochemical Processes of Advanced Machining
Answer» The CORRECT choice is (a) Smaller The BEST explanation: The DIAMETER of nozzle used is smaller than the hole size required to be drilled in WORK PIECE.

Discussion

48.	Which of the following parts can be machined using STEM process?(a) Turbine blade cooling nozzles(b) Fuel nozzles(c) Starting holes for wire-EDM(d) All of the mentionedThe question was asked in an online quiz.I'd like to ask this question from Shaped Tube Electrolytic Machining in portion Electrochemical Processes of Advanced Machining
Answer» Right ANSWER is (d) All of the mentioned Easiest explanation: STEM has its applications in jet engines and GAS turbine parts such as cooling nozzles for turbine blades, fuel nozzles and any holes where EDM RECAST is undesirable.

Discussion

49.	Electrolyte back pressure _________ the flow lines on work piece machined using ECDR.(a) Enhances(b) Eliminates(c) Maintains(d) IncreasesThe question was posed to me by my school teacher while I was bunking the class.Question is taken from Electro Chemical Drilling topic in portion Electrochemical Processes of Advanced Machining
Answer» Correct choice is (B) Eliminates The explanation: Electrolyte back pressure eliminates the FLOW lines on the machined surfaces which is a MAJOR ADVANTAGES of ECDR.

Discussion

50.	What are the values, of inter electrode gaps so that machining occurs easily?(a) 0.01 to 0.1 mm(b) 0.1 to 0.3 mm(c) 0.3 to 0.5 mm(d) 0.5 to 0.7 mmI had been asked this question during an internship interview.The doubt is from Electrochemical Deburring in section Electrochemical Processes of Advanced Machining
Answer» The CORRECT option is (C) 0.3 to 0.5 mm For explanation: The inter ELECTRODE GAP maintained in ECDB process, range between 0.30 – 0.50 mm.

Discussion

Explore topic-wise InterviewSolutions in .

What is the value of applied voltage used in ECDB process?(a) 1 to 5 V(b) 5 to 11 V(c) 12 to 24 V(d) 25 to 50 VI got this question during an online interview.My enquiry is from Electrochemical Deburring topic in division Electrochemical Processes of Advanced Machining

What are the normal cycle times for deburring process using ECDB?(a) 10 to 20 s(b) 30 to 45 s(c) 50 to 70 s(d) 80 to 100 sI have been asked this question in an online interview.My question is based upon Electrochemical Deburring topic in portion Electrochemical Processes of Advanced Machining

Which of the following processes can be used for deburring?(a) Water blasting(b) Abrasive flow machining(c) Electrochemical deburring(d) All of the mentionedThe question was asked in quiz.Query is from Electrochemical Deburring in section Electrochemical Processes of Advanced Machining

What is the percentage of electrolyte dissolved in water?(a) 1 – 5%(b) 10 – 25%(c) 40 – 70%(d) 75 – 90%This question was posed to me during an online exam.This is a very interesting question from Shaped Tube Electrolytic Machining in chapter Electrochemical Processes of Advanced Machining

Current efficiencies

Material is removed using which part of the electrode in ECDR?(a) Only front(b) Only side(c) Front and side(d) None of the mentionedThe question was asked during an online interview.My question is based upon Electro Chemical Drilling in chapter Electrochemical Processes of Advanced Machining

After deburring is done, which of the following is formed?(a) Flat surfaces(b) Controlled radius(c) Sharp edges(d) All of the mentionedI got this question in an online quiz.I need to ask this question from Electrochemical Deburring in chapter Electrochemical Processes of Advanced Machining

What may be the temperature of sulphuric acid used in the STEM process?(a) 10 ^oC(b) 21 ^oC(c) 38 ^oC(d) 50 ^oCI have been asked this question in my homework.This interesting question is from Shaped Tube Electrolytic Machining in portion Electrochemical Processes of Advanced Machining

What happens to the roundness error if we use the rotation of ECDR tool?(a) Increases(b) Remains same(c) Decreases(d) EnhancesI got this question in an internship interview.My query is from Electro Chemical Drilling topic in division Electrochemical Processes of Advanced Machining

What is the value of burr height that can be removed using ECDB process?(a) 0.1 mm(b) 0.3 mm(c) 0.5 mm(d) 0.7 mmI got this question in quiz.Query is from Electrochemical Deburring in section Electrochemical Processes of Advanced Machining

To which components mentioned below, ECDM can be applied?(a) Spline shafts(b) Milled components(c) Drilled holes(d) All of the mentionedThe question was posed to me in an online quiz.My doubt stems from Electrochemical Deburring in portion Electrochemical Processes of Advanced Machining

What are the normal hole depth tolerance values in ES drilling?(a) ± 0.03 mm(b) ± 0.05 mm(c) ± 0.07 mm(d) ± 0.09 mmThis question was addressed to me during an internship interview.My enquiry is from Electrostream (Capillary) Drilling in chapter Electrochemical Processes of Advanced Machining